{"id":89823,"date":"2026-08-03T21:41:07","date_gmt":"2026-08-03T13:41:07","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/89823.html"},"modified":"2026-08-03T21:41:07","modified_gmt":"2026-08-03T13:41:07","slug":"%e3%80%90linux%e7%b3%bb%e7%bb%9f%e7%bc%96%e7%a8%8b%e3%80%91%e8%bf%9b%e7%a8%8b%e7%a8%8b%e5%ba%8f%e6%9b%bf%e6%8d%a2%ef%bc%9a%e4%b8%ba%e4%bb%80%e4%b9%88%e6%9b%bf%e6%8d%a2%e3%80%81%e5%a6%82%e4%bd%95","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/89823.html","title":{"rendered":"\u3010Linux\u7cfb\u7edf\u7f16\u7a0b\u3011\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362\uff1a\u4e3a\u4ec0\u4e48\u66ff\u6362\u3001\u5982\u4f55\u66ff\u6362\u3001\u66ff\u6362\u6548\u679c\u548c\u5e95\u5c42\u539f\u7406"},"content":{"rendered":"

\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362：\u4ece\u539f\u7406\u5230\u5b9e\u6218，\u5f7b\u5e95\u641e\u61c2exec\u51fd\u6570\u65cf<\/h2>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

🌈
\n say-fall：\u4e2a\u4eba\u4e3b\u9875<\/b><\/font> <\/p>\n

🚀
\n \u4e13\u680f：\u300a\u624b\u628a\u624b\u6559\u4f60\u5b66\u4f1aC++\u300b | \u300a\u7cfb\u7edf\u6df1\u5165Linux\u64cd\u4f5c\u7cfb\u7edf\u300b | \u300a\u6570\u636e\u7ed3\u6784\u4e0e\u7b97\u6cd5\u300b<\/b><\/font> <\/p>\n

💪
\n \u683c\u8a00：\u505a\u597d\u4f60\u81ea\u5df1，\u624d\u80fd\u5438\u5f15\u66f4\u591a\u4eba，\u4e0e\u4ed6\u4eec\u5171\u8d62，\u8fd9\u624d\u662f\u6700\u597d\u7684\u6210\u957f\u65b9\u5f0f\u3002<\/b><\/font> <\/p>\n

\n

📝 \u524d\u8a00<\/h3>\n

\u5728\u524d\u9762\u7684\u6587\u7ae0\u4e2d，\u6211\u4eec\u5df2\u7ecf\u5b66\u4e60\u4e86 fork<\/font> \u521b\u5efa\u5b50\u8fdb\u7a0b\u548c wait<\/font> \u7b49\u5f85\u5b50\u8fdb\u7a0b\u9000\u51fa\u3002\u4f46\u4f60\u6709\u6ca1\u6709\u60f3\u8fc7\u4e00\u4e2a\u95ee\u9898：fork \u521b\u5efa\u7684\u5b50\u8fdb\u7a0b，\u6267\u884c\u7684\u4ee3\u7801\u548c\u7236\u8fdb\u7a0b\u51e0\u4e4e\u4e00\u6a21\u4e00\u6837\u2014\u2014\u8fd9\u6709\u4ec0\u4e48\u610f\u4e49？<\/p>\n

\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d，\u6211\u4eec\u5f80\u5f80\u9700\u8981\u5b50\u8fdb\u7a0b\u53bb\u6267\u884c\u4e00\u4e2a \u5b8c\u5168\u4e0d\u540c\u7684\u7a0b\u5e8f<\/b><\/font>\u3002\u6bd4\u5982\u4f60\u5728\u7ec8\u7aef\u6572 ls，shell \u5e76\u4e0d\u662f\u4e00\u4e2a\u81ea\u5df1\u5b9e\u73b0\u4e86\u5217\u76ee\u5f55\u529f\u80fd\u7684\u7a0b\u5e8f，\u5b83\u53ea\u662f fork \u4e86\u4e00\u4e2a\u5b50\u8fdb\u7a0b，\u7136\u540e\u8ba9\u5b50\u8fdb\u7a0b\u53bb\u6267\u884c \/bin\/ls \u8fd9\u4e2a\u7a0b\u5e8f\u3002<\/p>\n\n\u573a\u666ffork \u80fd\u505a\u5230\u5417\u6211\u4eec\u9700\u8981\u4ec0\u4e48<\/tr>\n\n\n\n
fork<\/font><\/td>\n\u5b50\u8fdb\u7a0b\u590d\u5236\u7236\u8fdb\u7a0b\u4ee3\u7801<\/td>\n\u53ea\u80fd\u6267\u884c\u76f8\u540c\u4ee3\u7801<\/td>\n<\/tr>\n
exec<\/font><\/td>\n\u66ff\u6362\u8fdb\u7a0b\u7684\u4ee3\u7801\u6bb5\u548c\u6570\u636e\u6bb5<\/td>\n\u6267\u884c\u5168\u65b0\u7684\u7a0b\u5e8f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

🔍 \u95ee\u9898\u6765\u4e86：<\/font> \u5982\u4f55\u8ba9\u4e00\u4e2a\u5df2\u7ecf\u8fd0\u884c\u7684\u8fdb\u7a0b，\u653e\u4e0b\u624b\u5934\u7684\u4ee3\u7801，\u53bb\u6267\u884c\u53e6\u4e00\u4e2a\u5168\u65b0\u7684\u7a0b\u5e8f？<\/p>\n

\u7b54\u6848\u5c31\u662f\u2014\u2014\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362（exec\u51fd\u6570\u65cf）<\/font>！\u5b83\u80fd\u8ba9\u4e00\u4e2a\u8fdb\u7a0b"\u6362\u82af\u6362\u9aa8"，\u52a0\u8f7d\u78c1\u76d8\u4e0a\u4e00\u4e2a\u65b0\u7a0b\u5e8f\u5230\u5f53\u524d\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u4e2d\u8fd0\u884c\u3002<\/p>\n

\u901a\u8fc7\u672c\u6587，\u4f60\u5c06\u638c\u63e1：<\/p>\n\n\u6280\u80fd\u5e94\u7528\u573a\u666f<\/tr>\n\n\n\n\n\n\n
\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362\u7684\u539f\u7406<\/td>\n\u7406\u89e3fork+exec\u7684\u7ecf\u5178\u7ec4\u5408<\/td>\n<\/tr>\n
exec\u7cfb\u52176\u4e2a\u51fd\u6570\u7684\u4f7f\u7528<\/td>\n\u5728\u5b50\u8fdb\u7a0b\u4e2d\u52a0\u8f7d\u65b0\u7a0b\u5e8f<\/td>\n<\/tr>\n
\u51fd\u6570\u547d\u540d\u89c4\u5f8b（l\/v\/p\/e）<\/td>\n\u5feb\u901f\u8bb0\u5fc6\u53c2\u6570\u4f20\u9012\u65b9\u5f0f<\/td>\n<\/tr>\n
\u73af\u5883\u53d8\u91cf\u7684\u4f20\u9012\u4e0e\u8986\u76d6<\/td>\n\u63a7\u5236\u5b50\u8fdb\u7a0b\u7684\u73af\u5883<\/td>\n<\/tr>\n
execve\u7cfb\u7edf\u8c03\u7528\u4e0e\u5e93\u51fd\u6570\u5173\u7cfb<\/td>\n\u7406\u89e3\u5e95\u5c42\u673a\u5236<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u6587\u7ae0\u76ee\u5f55<\/h4>\n
    \n
  • \u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362：\u4ece\u539f\u7406\u5230\u5b9e\u6218，\u5f7b\u5e95\u641e\u61c2exec\u51fd\u6570\u65cf<\/li>\n
  • \n
      \n
    • 📝 \u524d\u8a00<\/li>\n
    • \u4e00\u3001🌲 \u4ec0\u4e48\u662f\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362<\/li>\n
    • \n
        \n
      • 1.1 \u57fa\u672c\u6982\u5ff5<\/li>\n
      • 1.2 \u4e3a\u4ec0\u4e48\u8981fork\u5b50\u8fdb\u7a0b\u6765\u66ff\u6362<\/li>\n
      • 1.3 \u66ff\u6362\u6210\u529f vs \u66ff\u6362\u5931\u8d25<\/li>\n<\/ul>\n<\/li>\n
      • \u4e8c\u3001🔍 exec\u51fd\u6570\u65cf\u5168\u666f<\/li>\n
      • \n
          \n
        • 2.1 \u516d\u4e2a\u51fd\u6570\u4e00\u89c8<\/li>\n
        • 2.2 \u547d\u540d\u89c4\u5f8b\u2014\u2014\u5b57\u6bcd\u542b\u4e49<\/li>\n<\/ul>\n<\/li>\n
        • \u4e09\u3001🛠\ufe0f \u5217\u8868\u4f20\u53c2\u2014\u2014execl \/ execlp \/ execle<\/li>\n
        • \n
            \n
          • 3.1 execl\u2014\u2014\u6700\u57fa\u7840\u7684\u5217\u8868\u4f20\u53c2<\/li>\n
          • \n
              \n
            • … \u53ef\u53d8\u53c2\u6570\u5217\u8868\u662f\u4ec0\u4e48<\/li>\n
            • \u4e3a\u4ec0\u4e48\u6700\u540e\u8981\u4f20\u5165\u4e00\u4e2a NULL<\/li>\n
            • \u4ee3\u7801\u793a\u4f8b<\/li>\n<\/ul>\n<\/li>\n
            • 3.2 execlp\u2014\u2014\u80fd\u641c\u7d22PATH\u7684\u5217\u8868\u4f20\u53c2<\/li>\n
            • 3.3 execle\u2014\u2014\u5217\u8868\u4f20\u53c2 + \u81ea\u5b9a\u4e49\u73af\u5883\u53d8\u91cf<\/li>\n<\/ul>\n<\/li>\n
            • \u56db\u3001📦 \u6570\u7ec4\u4f20\u53c2\u2014\u2014execv \/ execvp \/ execve<\/li>\n
            • \n
                \n
              • 4.1 execv\u2014\u2014\u6570\u7ec4\u4f20\u53c2<\/li>\n
              • \n
                  \n
                • \u4e3a\u4ec0\u4e48\u662f char* const argv[]<\/li>\n<\/ul>\n<\/li>\n
                • 4.2 execvp\u2014\u2014\u6570\u7ec4\u4f20\u53c2 + PATH\u641c\u7d22<\/li>\n
                • 4.3 execve\u2014\u2014\u7cfb\u7edf\u8c03\u7528\u672c\u5c0a<\/li>\n<\/ul>\n<\/li>\n
                • \u4e94\u3001\u2699\ufe0f \u516d\u4e2a\u51fd\u6570\u7684\u5173\u7cfb<\/li>\n
                • \u516d\u3001🔄 \u73af\u5883\u53d8\u91cf\u7684\u4f20\u9012<\/li>\n
                • \n
                    \n
                  • 6.1 \u4e0d\u4f20 envp \u65f6\u2014\u2014\u7ee7\u627f\u7236\u8fdb\u7a0b\u73af\u5883\u53d8\u91cf<\/li>\n
                  • 6.2 \u4f20 envp \u65f6\u2014\u2014\u8986\u76d6\u5f0f\u66ff\u6362<\/li>\n
                  • 6.3 \u5982\u4f55\u65b0\u589e\u73af\u5883\u53d8\u91cf\u2014\u2014putenv()<\/li>\n
                  • \n
                      \n
                    • \u4e24\u79cd\u65b0\u589e\u65b9\u5f0f<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n
                    • \u4e03\u3001🤔 \u4e3a\u4ec0\u4e48\u66ff\u6362\u4e0d\u5f71\u54cd\u7236\u8fdb\u7a0b<\/li>\n
                    • \n
                        \n
                      • 7.1 \u539f\u56e0\u4e00：\u5199\u65f6\u62f7\u8d1d（Copy-on-Write）<\/li>\n
                      • 7.2 \u539f\u56e0\u4e8c：\u5730\u5740\u7a7a\u95f4\u9694\u79bb<\/li>\n<\/ul>\n<\/li>\n
                      • \u516b\u3001🧪 \u5b8c\u6574\u5b9e\u6218\u793a\u4f8b<\/li>\n
                      • \u4e5d\u3001🤔 \u51e0\u4e2a\u601d\u8003\u9898<\/li>\n
                      • \n
                          \n
                        • 1\ufe0f\u20e3 exec \u6210\u529f\u540e，\u8fdb\u7a0b\u7684 PID \u4f1a\u53d8\u5417？<\/li>\n
                        • 2\ufe0f\u20e3 execve \u548c\u5176\u4ed65\u4e2a\u51fd\u6570\u6709\u4ec0\u4e48\u672c\u8d28\u533a\u522b？<\/li>\n
                        • 3\ufe0f\u20e3 \u4e3a\u4ec0\u4e48 execle \u4f20\u7684 envp \u662f\u8986\u76d6\u5f0f\u7684，\u800c\u4e0d\u662f\u8ffd\u52a0\u5f0f\u7684？<\/li>\n
                        • 4\ufe0f\u20e3 \u5982\u679c execlp \u627e\u4e0d\u5230\u53ef\u6267\u884c\u6587\u4ef6，\u4f1a\u53d1\u751f\u4ec0\u4e48？<\/li>\n<\/ul>\n<\/li>\n
                        • \u672c\u8282\u5b8c<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
                          \n

                          \u4e00\u3001🌲 \u4ec0\u4e48\u662f\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362<\/h3>\n

                          1.1 \u57fa\u672c\u6982\u5ff5<\/h4>\n

                          \u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362<\/b><\/font>，\u6307\u7684\u662f\u4e00\u4e2a\u8fdb\u7a0b\u8c03\u7528\u7279\u5b9a\u7684\u63a5\u53e3\u540e，\u5c06\u78c1\u76d8\u4e0a\u7684\u4e00\u4e2a\u5168\u65b0\u7a0b\u5e8f（\u4ee3\u7801\u548c\u6570\u636e）\u52a0\u8f7d\u5230 \u8c03\u7528\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4<\/font> \u4e2d，\u4ece\u800c \u66ff\u6362\u6389<\/b><\/font> \u5f53\u524d\u8fdb\u7a0b\u7684 \u4ee3\u7801\u6bb5\u3001\u6570\u636e\u6bb5\u3001\u5806\u3001\u6808<\/b><\/font> \u7b49\u5185\u5bb9\u3002<\/p>\n

                          \u5173\u952e\u8981\u70b9：<\/p>\n\n\u66ff\u6362\u5185\u5bb9\u662f\u5426\u88ab\u66ff\u6362\u8bf4\u660e<\/tr>\n\n\n\n\n\n
                          \u4ee3\u7801\u6bb5<\/font><\/td>\n\u662f<\/font><\/td>\n\u88ab\u65b0\u7a0b\u5e8f\u7684\u4ee3\u7801\u66ff\u6362<\/td>\n<\/tr>\n
                          \u6570\u636e\u6bb5<\/font><\/td>\n\u662f<\/font><\/td>\n\u88ab\u65b0\u7a0b\u5e8f\u7684\u6570\u636e\u66ff\u6362（\u5927\u5c0f\u4f1a\u6539\u53d8）<\/td>\n<\/tr>\n
                          \u5806\u548c\u6808<\/font><\/td>\n\u662f<\/font><\/td>\n\u88ab\u91cd\u65b0\u521d\u59cb\u5316<\/td>\n<\/tr>\n
                          PCB（\u8fdb\u7a0b\u63a7\u5236\u5757）<\/font><\/td>\n\u4e0d\u53d8<\/font><\/td>\nPID\u4e0d\u53d8，\u9875\u8868\u4e0d\u53d8，\u6587\u4ef6\u63cf\u8ff0\u7b26\u8868\u4e0d\u53d8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                          💡 \u7b80\u5355\u7406\u89e3：<\/font> \u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362\u5c31\u50cf\u4e00\u4e2a\u4eba\u6362\u4e86\u4e00\u8eab\u8863\u670d\u548c\u6280\u80fd，\u4f46\u8eab\u4efd\u8bc1\u53f7\u7801（PID）\u6ca1\u53d8\u3002<\/p>\n

                          1.2 \u4e3a\u4ec0\u4e48\u8981fork\u5b50\u8fdb\u7a0b\u6765\u66ff\u6362<\/h4>\n

                          \u4e00\u65e6\u7a0b\u5e8f\u66ff\u6362 \u6210\u529f<\/font>，\u5f53\u524d\u8fdb\u7a0b \u4e4b\u540e\u7684\u4ee3\u7801\u5c31\u4e0d\u4f1a\u6267\u884c\u4e86<\/font>\u2014\u2014\u56e0\u4e3a\u4ee3\u7801\u6bb5\u5df2\u7ecf\u88ab\u66ff\u6362\u6210\u65b0\u7a0b\u5e8f\u7684\u4ee3\u7801\u4e86，\u539f\u6765\u7684\u4ee3\u7801\u6839\u672c\u4e0d\u5b58\u5728\u4e86\u3002<\/p>\n

                          \u6240\u4ee5，\u5982\u679c\u6211\u4eec\u76f4\u63a5\u5728\u7236\u8fdb\u7a0b\u4e2d\u8c03\u7528 exec，\u7236\u8fdb\u7a0b\u5c31"\u56de\u4e0d\u6765\u4e86"\u3002\u6b63\u786e\u7684\u505a\u6cd5\u662f\u5148 fork \u4e00\u4e2a\u5b50\u8fdb\u7a0b，\u5728\u5b50\u8fdb\u7a0b\u4e2d\u8c03\u7528 exec：<\/p>\n

                          pid_t<\/span> pid =<\/span> fork<\/span>(<\/span>)<\/span>;<\/span>
                          \nif<\/span> (<\/span>pid ==<\/span> 0<\/span>)<\/span> {<\/span>
                          \n \/\/ \u5b50\u8fdb\u7a0b：\u53bb\u6267\u884c\u65b0\u7a0b\u5e8f<\/span>
                          \n execl<\/span>(<\/span>"\/bin\/ls"<\/span>,<\/span> "ls"<\/span>,<\/span> "-l"<\/span>,<\/span> NULL<\/span>)<\/span>;<\/span>
                          \n \/\/ \u5982\u679cexec\u6210\u529f，\u4e0b\u9762\u7684\u4ee3\u7801\u4e0d\u4f1a\u6267\u884c<\/span>
                          \n exit<\/span>(<\/span>1<\/span>)<\/span>;<\/span> \/\/ \u53ea\u6709exec\u5931\u8d25\u624d\u4f1a\u6267\u884c\u5230\u8fd9\u91cc<\/span>
                          \n}<\/span> else<\/span> {<\/span>
                          \n \/\/ \u7236\u8fdb\u7a0b：\u7ee7\u7eed\u5e72\u81ea\u5df1\u7684\u4e8b<\/span>
                          \n waitpid<\/span>(<\/span>pid,<\/span> &<\/span>status,<\/span> 0<\/span>)<\/span>;<\/span> \/\/ \u7b49\u5f85\u5b50\u8fdb\u7a0b\u7ed3\u675f<\/span>
                          \n}<\/span><\/p>\n

                          \u26a0\ufe0f \u6838\u5fc3\u7406\u89e3：<\/font> exec \u6210\u529f\u65e0\u8fd4\u56de\u503c（\u8fdb\u7a0b\u76f4\u63a5\u53bb\u6267\u884c\u65b0\u7a0b\u5e8f\u4e86），\u53ea\u6709\u5931\u8d25\u624d\u8fd4\u56de -1 \u5e76\u8bbe\u7f6e\u5168\u5c40\u53d8\u91cf errno<\/b><\/font> \u8bb0\u5f55\u9519\u8bef\u539f\u56e0\u3002<\/p>\n

                          1.3 \u66ff\u6362\u6210\u529f vs \u66ff\u6362\u5931\u8d25<\/h4>\n\n\u60c5\u51b5\u4ee3\u7801\u6bb5\/\u6570\u636e\u6bb5\u540e\u7eed\u4ee3\u7801\u8fd4\u56de\u503c<\/tr>\n\n\n\n
                          \u66ff\u6362\u6210\u529f<\/font><\/td>\n\u88ab\u65b0\u7a0b\u5e8f\u66ff\u6362<\/td>\n\u4e0d\u6267\u884c<\/font><\/td>\n\u65e0\u8fd4\u56de\u503c<\/font><\/td>\n<\/tr>\n
                          \u66ff\u6362\u5931\u8d25<\/font><\/td>\n\u4e0d\u53d7\u5f71\u54cd<\/td>\n\u7ee7\u7eed\u6267\u884c<\/td>\n\u8fd4\u56de -1<\/b><\/font>，\u8bbe\u7f6e errno<\/b><\/font><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                          💡 \u8bbe\u8ba1\u54f2\u5b66：<\/font> exec \u51fd\u6570"\u53ea\u8fd4\u56de\u9519\u8bef，\u6ca1\u6709\u6210\u529f\u8fd4\u56de\u503c"\u3002\u56e0\u4e3a\u6210\u529f\u5c31\u610f\u5473\u7740\u8fdb\u7a0b\u5df2\u7ecf\u53d8\u6210\u53e6\u4e00\u4e2a\u7a0b\u5e8f\u4e86，\u539f\u6765\u7684\u6267\u884c\u6d41\u5df2\u7ecf\u4e0d\u5b58\u5728\u4e86\u3002<\/p>\n

                          \n

                          \u4e8c\u3001🔍 exec\u51fd\u6570\u65cf\u5168\u666f<\/h3>\n

                          2.1 \u516d\u4e2a\u51fd\u6570\u4e00\u89c8<\/h4>\n

                          exec \u7cfb\u5217\u5171\u6709 6\u4e2a<\/b><\/font> \u5e93\u51fd\u6570，\u5b83\u4eec\u7684\u5e95\u5c42\u90fd\u8c03\u7528\u540c\u4e00\u4e2a \u7cfb\u7edf\u8c03\u7528 execve<\/font>：<\/p>\n

                          #<\/span>include<\/span> <unistd.h><\/span><\/span><\/p>\n

                          int<\/span> execl<\/span>(<\/span> const<\/span> char<\/span> *<\/span>path,<\/span> const<\/span> char<\/span> *<\/span>arg,<\/span> .<\/span>.<\/span>.<\/span>)<\/span>;<\/span>
                          \nint<\/span> execlp<\/span>(<\/span> const<\/span> char<\/span> *<\/span>file,<\/span> const<\/span> char<\/span> *<\/span>arg,<\/span> .<\/span>.<\/span>.<\/span>)<\/span>;<\/span>
                          \nint<\/span> execle<\/span>(<\/span> const<\/span> char<\/span> *<\/span>path,<\/span> const<\/span> char<\/span> *<\/span>arg,<\/span> .<\/span>.<\/span>.<\/span>,<\/span> char<\/span> *<\/span>const<\/span> envp[<\/span>]<\/span>)<\/span>;<\/span>
                          \nint<\/span> execv<\/span>(<\/span> const<\/span> char<\/span> *<\/span>path,<\/span> char<\/span> *<\/span>const<\/span> argv[<\/span>]<\/span>)<\/span>;<\/span>
                          \nint<\/span> execvp<\/span>(<\/span> const<\/span> char<\/span> *<\/span>file,<\/span> char<\/span> *<\/span>const<\/span> argv[<\/span>]<\/span>)<\/span>;<\/span>
                          \nint<\/span> execve<\/span>(<\/span> const<\/span> char<\/span> *<\/span>path,<\/span> char<\/span> *<\/span>const<\/span> argv[<\/span>]<\/span>,<\/span> char<\/span> *<\/span>const<\/span> envp[<\/span>]<\/span>)<\/span>;<\/span><\/p>\n

                          2.2 \u547d\u540d\u89c4\u5f8b\u2014\u2014\u5b57\u6bcd\u542b\u4e49<\/h4>\n

                          exec \u540e\u9762\u7684\u5b57\u6bcd\u51b3\u5b9a\u4e86 \u53c2\u6570\u4f20\u9012\u65b9\u5f0f<\/b><\/font> \u548c \u8def\u5f84\u641c\u7d22\u65b9\u5f0f<\/b><\/font>：<\/p>\n\n\u5b57\u6bcd\u542b\u4e49\u8bf4\u660e<\/tr>\n\n\n\n\n\n
                          l<\/font> (list)<\/td>\n\u5217\u8868\u4f20\u53c2<\/td>\n\u53c2\u6570\u9010\u4e2a\u5217\u51fa，\u4ee5 NULL \u7ed3\u5c3e<\/td>\n<\/tr>\n
                          v<\/font> (vector)<\/td>\n\u6570\u7ec4\u4f20\u53c2<\/td>\n\u53c2\u6570\u653e\u5728\u6307\u9488\u6570\u7ec4\u4e2d\u4f20\u5165<\/td>\n<\/tr>\n
                          p<\/font> (path)<\/td>\n\u8def\u5f84\u641c\u7d22<\/td>\n\u4e0d\u7528\u7ed9\u5b8c\u6574\u8def\u5f84，\u81ea\u52a8\u641c\u7d22\u73af\u5883\u53d8\u91cf PATH<\/td>\n<\/tr>\n
                          e<\/font> (env)<\/td>\n\u73af\u5883\u53d8\u91cf<\/td>\n\u81ea\u5df1\u7ef4\u62a4\u73af\u5883\u53d8\u91cf，\u4f20\u5165\u81ea\u5b9a\u4e49 envp<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                          \u7ec4\u5408\u8d77\u6765：<\/p>\n\n\u51fd\u6570\u4f20\u53c2\u65b9\u5f0f\u641c\u7d22PATH\u81ea\u5b9a\u4e49\u73af\u5883\u53d8\u91cf<\/tr>\n\n\n\n\n\n\n\n
                          execl<\/font><\/td>\n\u5217\u8868<\/td>\n\u274c<\/td>\n\u274c<\/td>\n<\/tr>\n
                          execlp<\/font><\/td>\n\u5217\u8868<\/td>\n\u2705<\/td>\n\u274c<\/td>\n<\/tr>\n
                          execle<\/font><\/td>\n\u5217\u8868<\/td>\n\u274c<\/td>\n\u2705<\/td>\n<\/tr>\n
                          execv<\/font><\/td>\n\u6570\u7ec4<\/td>\n\u274c<\/td>\n\u274c<\/td>\n<\/tr>\n
                          execvp<\/font><\/td>\n\u6570\u7ec4<\/td>\n\u2705<\/td>\n\u274c<\/td>\n<\/tr>\n
                          execve<\/font><\/td>\n\u6570\u7ec4<\/td>\n\u274c<\/td>\n\u2705<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                          💡 \u8bb0\u5fc6\u53e3\u8bc0：<\/font> l \u662f\u9010\u4e2a\u5217\u3001v \u662f\u88c5\u6570\u7ec4\u3001p \u80fd\u641c PATH\u3001e \u80fd\u4f20\u73af\u5883\u3002<\/p>\n

                          \n

                          \u4e09\u3001🛠\ufe0f \u5217\u8868\u4f20\u53c2\u2014\u2014execl \/ execlp \/ execle<\/h3>\n

                          3.1 execl\u2014\u2014\u6700\u57fa\u7840\u7684\u5217\u8868\u4f20\u53c2<\/h4>\n

                          int<\/span> execl<\/span>(<\/span>const<\/span> char<\/span> *<\/span>path,<\/span> const<\/span> char<\/span> *<\/span>arg,<\/span> .<\/span>.<\/span>.<\/span>)<\/span>;<\/span><\/p>\n

                          \u53c2\u6570\u8bf4\u660e：<\/p>\n\n\u53c2\u6570\u542b\u4e49\u793a\u4f8b<\/tr>\n\n\n\n\n\n
                          path<\/b><\/font><\/td>\n\u53ef\u6267\u884c\u6587\u4ef6\u7684 \u5b8c\u6574\u8def\u5f84<\/font><\/td>\n"\/bin\/ls"<\/td>\n<\/tr>\n
                          arg<\/b><\/font><\/td>\n\u7a0b\u5e8f\u540d（\u7ea6\u5b9a\u4fd7\u6210\u4f20\u5165，\u4e0d\u5f71\u54cd\u6267\u884c\u7ed3\u679c）<\/td>\n"ls"<\/td>\n<\/tr>\n
                          \u2026<\/b><\/font><\/td>\n\u53ef\u53d8\u53c2\u6570\u5217\u8868，\u5373\u547d\u4ee4\u884c\u53c2\u6570<\/td>\n"-l", "-a"<\/td>\n<\/tr>\n
                          NULL<\/b><\/font><\/td>\n\u5fc5\u987b\u4ee5 NULL \u7ed3\u5c3e<\/font><\/td>\n\u6807\u8bb0\u53c2\u6570\u7ed3\u675f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                          \u2026 \u53ef\u53d8\u53c2\u6570\u5217\u8868\u662f\u4ec0\u4e48<\/h5>\n

                          \u4f60\u53ef\u80fd\u5bf9 … \u611f\u5230\u964c\u751f，\u5176\u5b9e\u4f60\u65e9\u5c31\u7528\u8fc7\u2014\u2014printf<\/font> \u5c31\u662f\u53ef\u53d8\u53c2\u6570\u51fd\u6570：<\/p>\n

                          printf<\/span>(<\/span>"hello %d %s\\\\n"<\/span>,<\/span> 42<\/span>,<\/span> "world"<\/span>)<\/span>;<\/span> \/\/ \u4f60\u53ef\u4ee5\u4f20\u4efb\u610f\u6570\u91cf\u7684\u53c2\u6570<\/span>
                          \nexecl<\/span>(<\/span>"\/bin\/ls"<\/span>,<\/span> "ls"<\/span>,<\/span> "-l"<\/span>,<\/span> "-a"<\/span>,<\/span> NULL<\/span>)<\/span>;<\/span> \/\/ \u540c\u6837\u53ef\u4ee5\u4f20\u4efb\u610f\u6570\u91cf\u53c2\u6570<\/span><\/p>\n

                          \u533a\u522b\u5728\u4e8e：printf \u7528\u683c\u5f0f\u5b57\u7b26\u4e32\u4e2d\u7684 %d\u3001%s \u6765\u786e\u5b9a\u53c2\u6570\u4e2a\u6570\u548c\u7c7b\u578b，\u800c execl \u7528 NULL<\/font> \u6765\u6807\u8bb0\u53c2\u6570\u5217\u8868\u7684\u7ed3\u675f\u3002<\/p>\n

                          \u4e3a\u4ec0\u4e48\u6700\u540e\u8981\u4f20\u5165\u4e00\u4e2a NULL<\/h5>\n

                          \u53ef\u53d8\u53c2\u6570\u51fd\u6570 \u65e0\u6cd5\u81ea\u52a8\u77e5\u9053\u4f20\u4e86\u591a\u5c11\u4e2a\u53c2\u6570<\/b><\/font>\u3002execl \u5185\u90e8\u4f1a\u4f9d\u6b21\u8bfb\u53d6\u6bcf\u4e2a\u53c2\u6570，\u76f4\u5230\u9047\u5230 NULL \u624d\u505c\u6b62\u3002\u5982\u679c\u4f60 \u5fd8\u8bb0\u4f20 NULL<\/font>：<\/p>\n

                          \/\/ \u274c \u9519\u8bef！\u6ca1\u6709NULL\u7ed3\u5c3e，\u51fd\u6570\u4f1a\u8d8a\u754c\u8bfb\u53d6\u5185\u5b58<\/span>
                          \nexecl<\/span>(<\/span>"\/bin\/ls"<\/span>,<\/span> "ls"<\/span>,<\/span> "-l"<\/span>)<\/span>;<\/span><\/p>\n

                          \/\/ \u2705 \u6b63\u786e！NULL\u6807\u8bb0\u53c2\u6570\u7ed3\u675f<\/span>
                          \nexecl<\/span>(<\/span>"\/bin\/ls"<\/span>,<\/span> "ls"<\/span>,<\/span> "-l"<\/span>,<\/span> NULL<\/span>)<\/span>;<\/span><\/p>\n

                          \u26a0\ufe0f \u5fc5\u987b\u4ee5NULL\u7ed3\u5c3e：<\/font> \u4e0d\u4f20 NULL \u4f1a\u5bfc\u81f4\u672a\u5b9a\u4e49\u884c\u4e3a，\u7a0b\u5e8f\u53ef\u80fd\u5d29\u6e83\u6216\u8bfb\u53d6\u5783\u573e\u6570\u636e\u3002NULL \u662f\u544a\u8bc9 exec \u51fd\u6570"\u53c2\u6570\u5230\u8fd9\u91cc\u5c31\u7ed3\u675f\u4e86"\u7684\u54e8\u5175\u503c\u3002<\/p>\n

                          \u4ee3\u7801\u793a\u4f8b<\/h5>\n

                          #<\/span>include<\/span> <stdio.h><\/span><\/span>
                          \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
                          \n#<\/span>include<\/span> <stdlib.h><\/span><\/span><\/p>\n

                          int<\/span> main<\/span>(<\/span>)<\/span>
                          \n{<\/span>
                          \n printf<\/span>(<\/span>"\u7a0b\u5e8f\u66ff\u6362\u5f00\u59cb…\\\\n"<\/span>)<\/span>;<\/span><\/p>\n

                          \/\/ \u7528 execl \u6267\u884c \/bin\/ls -l -a<\/span>
                          \n execl<\/span>(<\/span>"\/bin\/ls"<\/span>,<\/span> "ls"<\/span>,<\/span> "-l"<\/span>,<\/span> "-a"<\/span>,<\/span> NULL<\/span>)<\/span>;<\/span><\/p>\n

                          \/\/ \u5982\u679cexec\u6210\u529f，\u4e0b\u9762\u7684\u4ee3\u7801\u4e0d\u4f1a\u6267\u884c<\/span>
                          \n \/\/ \u53ea\u6709\u5931\u8d25\u624d\u4f1a\u8d70\u5230\u8fd9\u91cc<\/span>
                          \n perror<\/span>(<\/span>"execl failed"<\/span>)<\/span>;<\/span>
                          \n exit<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
                          \n}<\/span><\/p>\n

                          \u8fd0\u884c\u7ed3\u679c：<\/p>\n

                          \u7a0b\u5e8f\u66ff\u6362\u5f00\u59cb…
                          \ntotal 8
                          \ndrwxr-xr-x 2 user user 4096 Jul 26 17:00 .
                          \ndrwxr-xr-x 3 user user 4096 Jul 26 16:50 ..
                          \n-rw-r–r– 1 user user 200 Jul 26 17:00 a.out<\/p>\n

                          💡 \u6ce8\u610f：<\/font> \u201c\u7a0b\u5e8f\u66ff\u6362\u5f00\u59cb\u2026\u201d \u6253\u5370\u4e86，\u4f46 execl \u4e4b\u540e\u7684 perror \u6ca1\u6709\u6267\u884c\u2014\u2014\u8bf4\u660e\u66ff\u6362\u6210\u529f\u4e86，\u540e\u7eed\u4ee3\u7801\u4e0d\u518d\u6267\u884c\u3002<\/p>\n

                          3.2 execlp\u2014\u2014\u80fd\u641c\u7d22PATH\u7684\u5217\u8868\u4f20\u53c2<\/h4>\n

                          int<\/span> execlp<\/span>(<\/span>const<\/span> char<\/span> *<\/span>file,<\/span> const<\/span> char<\/span> *<\/span>arg,<\/span> .<\/span>.<\/span>.<\/span>)<\/span>;<\/span><\/p>\n

                          \u548c execl \u7684 \u552f\u4e00\u533a\u522b<\/b><\/font>：\u7b2c\u4e00\u4e2a\u53c2\u6570\u4e0d\u9700\u8981\u7ed9\u5b8c\u6574\u8def\u5f84，\u53ea\u9700\u8981\u7ed9\u7a0b\u5e8f\u540d，execlp \u4f1a\u81ea\u52a8\u5728 \u73af\u5883\u53d8\u91cf PATH<\/font> \u6307\u5b9a\u7684\u76ee\u5f55\u4e2d\u641c\u7d22\u3002<\/p>\n\n\u51fd\u6570\u7b2c\u4e00\u4e2a\u53c2\u6570\u793a\u4f8b<\/tr>\n\n\n\n
                          execl<\/font><\/td>\n\u5b8c\u6574\u8def\u5f84<\/td>\nexecl("\/bin\/ls", …)<\/td>\n<\/tr>\n
                          execlp<\/font><\/td>\n\u7a0b\u5e8f\u540d<\/td>\nexeclp("ls", …)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                          #<\/span>include<\/span> <stdio.h><\/span><\/span>
                          \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
                          \n#<\/span>include<\/span> <stdlib.h><\/span><\/span><\/p>\n

                          int<\/span> main<\/span>(<\/span>)<\/span>
                          \n{<\/span>
                          \n \/\/ \u4e0d\u9700\u8981\u5199 \/bin\/ls，\u76f4\u63a5\u5199 ls<\/span>
                          \n execlp<\/span>(<\/span>"ls"<\/span>,<\/span> "ls"<\/span>,<\/span> "-l"<\/span>,<\/span> "-a"<\/span>,<\/span> NULL<\/span>)<\/span>;<\/span><\/p>\n

                          perror<\/span>(<\/span>"execlp failed"<\/span>)<\/span>;<\/span>
                          \n exit<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
                          \n}<\/span><\/p>\n

                          💡 \u4e3a\u4ec0\u4e48 execlp \u80fd\u76f4\u63a5\u4f20\u5165\u53c2\u6570\u540d\u800c\u4e0d\u4f20\u8def\u5f84？<\/font><\/p>\n

                          \u56e0\u4e3a execlp \u5185\u90e8\u4f1a\u8c03\u7528 getenv("PATH") \u83b7\u53d6\u73af\u5883\u53d8\u91cf PATH \u7684\u503c（\u4f8b\u5982 \/usr\/local\/bin:\/usr\/bin:\/bin），\u7136\u540e\u4f9d\u6b21\u5728 PATH \u6307\u5b9a\u7684\u6bcf\u4e2a\u76ee\u5f55\u4e2d\u641c\u7d22\u53ef\u6267\u884c\u6587\u4ef6\u3002\u5c31\u50cf\u4f60\u5728\u7ec8\u7aef\u76f4\u63a5\u6572 ls \u80fd\u6267\u884c\u4e00\u6837，shell \u4e5f\u662f\u901a\u8fc7 PATH \u627e\u5230 \/bin\/ls \u7684\u3002\u5e26 p \u7684\u51fd\u6570\u628a\u8fd9\u4e2a\u641c\u7d22\u903b\u8f91\u5c01\u88c5\u597d\u4e86，\u4f60\u4e0d\u7528\u624b\u52a8\u62fc\u8def\u5f84\u3002<\/p>\n

                          3.3 execle\u2014\u2014\u5217\u8868\u4f20\u53c2 + \u81ea\u5b9a\u4e49\u73af\u5883\u53d8\u91cf<\/h4>\n

                          int<\/span> execle<\/span>(<\/span>const<\/span> char<\/span> *<\/span>path,<\/span> const<\/span> char<\/span> *<\/span>arg,<\/span> .<\/span>.<\/span>.<\/span>,<\/span> char<\/span> *<\/span>const<\/span> envp[<\/span>]<\/span>)<\/span>;<\/span><\/p>\n

                          \u6700\u540e\u4e00\u4e2a\u53c2\u6570 envp<\/b><\/font> \u662f\u73af\u5883\u53d8\u91cf\u5217\u8868，\u5b83\u662f\u4e00\u4e2a \u6307\u9488\u6570\u7ec4<\/font>，\u6bcf\u4e2a\u5143\u7d20\u683c\u5f0f\u4e3a "KEY=***"，\u4ee5 NULL \u7ed3\u5c3e\u3002<\/p>\n

                          #<\/span>include<\/span> <stdio.h><\/span><\/span>
                          \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
                          \n#<\/span>include<\/span> <stdlib.h><\/span><\/span><\/p>\n

                          int<\/span> main<\/span>(<\/span>)<\/span>
                          \n{<\/span>
                          \n char<\/span> *<\/span>const<\/span> envp[<\/span>]<\/span> =<\/span> {<\/span>
                          \n "PATH=\/bin:\/usr\/bin"<\/span>,<\/span>
                          \n "TERM=console"<\/span>,<\/span>
                          \n "HOME=\/home\/user"<\/span>,<\/span>
                          \n NULL<\/span>
                          \n }<\/span>;<\/span><\/p>\n

                          \/\/ \u7528\u81ea\u5b9a\u4e49\u73af\u5883\u53d8\u91cf\u6267\u884c \/bin\/env<\/span>
                          \n execle<\/span>(<\/span>"\/bin\/env"<\/span>,<\/span> "env"<\/span>,<\/span> NULL<\/span>,<\/span> envp)<\/span>;<\/span><\/p>\n

                          perror<\/span>(<\/span>"execle failed"<\/span>)<\/span>;<\/span>
                          \n exit<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
                          \n}<\/span><\/p>\n

                          \u26a0\ufe0f \u91cd\u8981：<\/font> envp \u662f \u8986\u76d6\u5f0f<\/b><\/font> \u7684！\u4e0d\u662f\u8ffd\u52a0\u3002\u65b0\u7a0b\u5e8f\u770b\u5230\u7684\u73af\u5883\u53d8\u91cf \u53ea\u6709<\/font> envp \u4e2d\u7684\u90a3\u4e9b，\u539f\u6765\u7684\u73af\u5883\u53d8\u91cf\u5168\u90e8\u88ab\u66ff\u6362\u6389\u3002<\/p>\n

                          \n

                          \u56db\u3001📦 \u6570\u7ec4\u4f20\u53c2\u2014\u2014execv \/ execvp \/ execve<\/h3>\n

                          4.1 execv\u2014\u2014\u6570\u7ec4\u4f20\u53c2<\/h4>\n

                          int<\/span> execv<\/span>(<\/span>const<\/span> char<\/span> *<\/span>path,<\/span> char<\/span> *<\/span>const<\/span> argv[<\/span>]<\/span>)<\/span>;<\/span><\/p>\n

                          \u8fd9\u91cc\u7684 v<\/b><\/font> \u4ee3\u8868 vector（\u6570\u7ec4）<\/font>\u3002\u548c execl \u7684\u533a\u522b\u53ea\u662f\u4f20\u53c2\u65b9\u5f0f\u4e0d\u540c\u2014\u2014execl \u628a\u53c2\u6570\u9010\u4e2a\u5217\u51fa，execv \u628a\u53c2\u6570\u653e\u5728\u4e00\u4e2a \u6307\u9488\u6570\u7ec4<\/font> \u91cc\u4f20\u5165\u3002<\/p>\n

                          #<\/span>include<\/span> <stdio.h><\/span><\/span>
                          \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
                          \n#<\/span>include<\/span> <stdlib.h><\/span><\/span><\/p>\n

                          int<\/span> main<\/span>(<\/span>)<\/span>
                          \n{<\/span>
                          \n \/\/ \u53c2\u6570\u6570\u7ec4\u2014\u2014\u548cmain\u51fd\u6570\u7684argv\u4e00\u6837<\/span>
                          \n char<\/span> *<\/span>const<\/span> argv[<\/span>]<\/span> =<\/span> {<\/span>"ls"<\/span>,<\/span> "-l"<\/span>,<\/span> "-a"<\/span>,<\/span> NULL<\/span>}<\/span>;<\/span><\/p>\n

                          execv<\/span>(<\/span>"\/bin\/ls"<\/span>,<\/span> argv)<\/span>;<\/span><\/p>\n

                          perror<\/span>(<\/span>"execv failed"<\/span>)<\/span>;<\/span>
                          \n exit<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
                          \n}<\/span><\/p>\n

                          💡 v \u548c l \u7684\u5173\u7cfb：<\/font> \u5c31\u50cf main(int argc, char *argv[]) \u63a5\u6536\u6570\u7ec4\u53c2\u6570\u4e00\u6837，execv \u7528\u6570\u7ec4\u4f20\u53c2\u66f4\u9002\u5408\u7a0b\u5e8f\u5316\u6784\u9020\u53c2\u6570\u5217\u8868\u7684\u573a\u666f\u2014\u2014\u6bd4\u5982\u4f60\u5728\u5199\u4e00\u4e2a shell，\u9700\u8981\u52a8\u6001\u62fc\u63a5\u547d\u4ee4\u53c2\u6570\u3002<\/p>\n

                          \u4e3a\u4ec0\u4e48\u662f char* const argv[]<\/h5>\n

                          char *const argv[] \u7684\u542b\u4e49\u62c6\u89e3：<\/p>\n\n\u90e8\u5206\u542b\u4e49<\/tr>\n\n\n\n\n
                          char *<\/td>\n\u6307\u5411\u5b57\u7b26\u4e32\u7684\u6307\u9488<\/td>\n<\/tr>\n
                          const<\/td>\n\u6307\u9488\u672c\u8eab\u4e0d\u53ef\u53d8（\u4e0d\u80fd\u4fee\u6539 argv[i] \u6307\u5411\u54ea\u4e2a\u5b57\u7b26\u4e32）<\/td>\n<\/tr>\n
                          argv[]<\/td>\n\u6570\u7ec4\u5f62\u5f0f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                          \u26a0\ufe0f const \u7684\u4f5c\u7528：<\/font> \u9632\u6b62\u51fd\u6570\u5185\u90e8\u4fee\u6539\u8c03\u7528\u8005\u4f20\u5165\u7684\u6307\u9488\u6570\u7ec4\u3002execv \u53ea\u9700\u8981\u8bfb\u53d6\u53c2\u6570，\u4e0d\u5e94\u8be5\u4fee\u6539\u4f60\u4f20\u5165\u7684\u6570\u7ec4\u3002\u8fd9\u662f\u4e00\u79cd \u5951\u7ea6\u5f0f\u8bbe\u8ba1<\/font>\u2014\u2014\u6211\u627f\u8bfa\u4e0d\u6539\u4f60\u7684\u6570\u636e，\u4f60\u4e5f\u653e\u5fc3\u4f20\u7ed9\u6211\u3002<\/p>\n

                          4.2 execvp\u2014\u2014\u6570\u7ec4\u4f20\u53c2 + PATH\u641c\u7d22<\/h4>\n

                          int<\/span> execvp<\/span>(<\/span>const<\/span> char<\/span> *<\/span>file,<\/span> char<\/span> *<\/span>const<\/span> argv[<\/span>]<\/span>)<\/span>;<\/span><\/p>\n

                          execvp = execv + PATH \u641c\u7d22，\u548c execlp \u7c7b\u4f3c，\u53ea\u662f\u4f20\u53c2\u65b9\u5f0f\u4ece\u5217\u8868\u53d8\u6210\u4e86\u6570\u7ec4：<\/p>\n

                          #<\/span>include<\/span> <stdio.h><\/span><\/span>
                          \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
                          \n#<\/span>include<\/span> <stdlib.h><\/span><\/span><\/p>\n

                          int<\/span> main<\/span>(<\/span>)<\/span>
                          \n{<\/span>
                          \n char<\/span> *<\/span>const<\/span> argv[<\/span>]<\/span> =<\/span> {<\/span>"ps"<\/span>,<\/span> "-e"<\/span>,<\/span> "-f"<\/span>,<\/span> NULL<\/span>}<\/span>;<\/span><\/p>\n

                          \/\/ \u4e0d\u7528\u5199 \/bin\/ps，\u76f4\u63a5\u5199 ps<\/span>
                          \n execvp<\/span>(<\/span>"ps"<\/span>,<\/span> argv)<\/span>;<\/span><\/p>\n

                          perror<\/span>(<\/span>"execvp failed"<\/span>)<\/span>;<\/span>
                          \n exit<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
                          \n}<\/span><\/p>\n

                          4.3 execve\u2014\u2014\u7cfb\u7edf\u8c03\u7528\u672c\u5c0a<\/h4>\n

                          int<\/span> execve<\/span>(<\/span>const<\/span> char<\/span> *<\/span>path,<\/span> char<\/span> *<\/span>const<\/span> argv[<\/span>]<\/span>,<\/span> char<\/span> *<\/span>const<\/span> envp[<\/span>]<\/span>)<\/span>;<\/span><\/p>\n

                          execve \u662f \u771f\u6b63\u7684\u7cfb\u7edf\u8c03\u7528<\/b><\/font>，\u4e0a\u97625\u4e2a\u51fd\u6570\u90fd\u662f C \u5e93\u51fd\u6570，\u5b83\u4eec\u6700\u7ec8\u90fd\u4f1a \u8c03\u7528 execve<\/font>\u3002<\/p>\n

                          #<\/span>include<\/span> <stdio.h><\/span><\/span>
                          \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
                          \n#<\/span>include<\/span> <stdlib.h><\/span><\/span><\/p>\n

                          int<\/span> main<\/span>(<\/span>)<\/span>
                          \n{<\/span>
                          \n char<\/span> *<\/span>const<\/span> argv[<\/span>]<\/span> =<\/span> {<\/span>"ls"<\/span>,<\/span> "-l"<\/span>,<\/span> "-a"<\/span>,<\/span> NULL<\/span>}<\/span>;<\/span>
                          \n char<\/span> *<\/span>const<\/span> envp[<\/span>]<\/span> =<\/span> {<\/span>"PATH=\/bin:\/usr\/bin"<\/span>,<\/span> "TERM=console"<\/span>,<\/span> NULL<\/span>}<\/span>;<\/span><\/p>\n

                          execve<\/span>(<\/span>"\/bin\/ls"<\/span>,<\/span> argv,<\/span> envp)<\/span>;<\/span><\/p>\n

                          perror<\/span>(<\/span>"execve failed"<\/span>)<\/span>;<\/span>
                          \n exit<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
                          \n}<\/span><\/p>\n

                          💡 \u67e5\u770b\u65b9\u6cd5：<\/font> \u5728 Linux \u4e0b\u8f93\u5165 man 2 execve \u770b\u5230\u7684\u662f\u7cfb\u7edf\u8c03\u7528\u624b\u518c（\u7b2c2\u8282），\u800c man 3 execl \u770b\u5230\u7684\u662f\u5e93\u51fd\u6570\u624b\u518c（\u7b2c3\u8282）\u3002\u8fd9\u5370\u8bc1\u4e86 execve \u662f\u7cfb\u7edf\u8c03\u7528，\u5176\u4f595\u4e2a\u662f\u5e93\u51fd\u6570\u3002<\/p>\n

                          \n

                          \u4e94\u3001\u2699\ufe0f \u516d\u4e2a\u51fd\u6570\u7684\u5173\u7cfb<\/h3>\n

                          exec \u7cfb\u5217\u516d\u4e2a\u51fd\u6570\u7684\u5e95\u5c42\u5173\u7cfb：<\/p>\n

                          execl execlp execle
                          \n \u2502 \u2502 \u2502
                          \n \u25bc \u25bc \u25bc
                          \n execv execvp \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510
                          \n \u2502 \u2502 \u2502
                          \n \u25bc \u25bc \u25bc
                          \n \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510 \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510
                          \n \u2502 C\u5e93\u51fd\u6570（\u5c01\u88c5\u5c42） \u2502 \u2502 \u7cfb\u7edf\u8c03\u7528 \u2502
                          \n \u2502 \u505a\u53c2\u6570\u683c\u5f0f\u8f6c\u6362 \u2502 \u2502 execve() \u2502
                          \n \u2502 \u5904\u7406PATH\u641c\u7d22 \u2502 \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u25b6 \u2502 \u5185\u6838\u5b9e\u73b0 \u2502
                          \n \u2502 \u5904\u7406\u73af\u5883\u53d8\u91cf\u7ee7\u627f \u2502 \u2502 \u2502
                          \n \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518 \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/p>\n

                          \u7b80\u5355\u603b\u7ed3：<\/p>\n\n\u51fd\u6570\u7c7b\u578b\u4f20\u53c2\u641cPATH\u81ea\u5b9a\u4e49env<\/tr>\n\n\n\n\n\n\n\n
                          execl<\/font><\/td>\n\u5e93\u51fd\u6570<\/td>\n\u5217\u8868<\/td>\n\u274c<\/td>\n\u274c<\/td>\n<\/tr>\n
                          execlp<\/font><\/td>\n\u5e93\u51fd\u6570<\/td>\n\u5217\u8868<\/td>\n\u2705<\/td>\n\u274c<\/td>\n<\/tr>\n
                          execle<\/font><\/td>\n\u5e93\u51fd\u6570<\/td>\n\u5217\u8868<\/td>\n\u274c<\/td>\n\u2705<\/td>\n<\/tr>\n
                          execv<\/font><\/td>\n\u5e93\u51fd\u6570<\/td>\n\u6570\u7ec4<\/td>\n\u274c<\/td>\n\u274c<\/td>\n<\/tr>\n
                          execvp<\/font><\/td>\n\u5e93\u51fd\u6570<\/td>\n\u6570\u7ec4<\/td>\n\u2705<\/td>\n\u274c<\/td>\n<\/tr>\n
                          execve<\/font><\/td>\n\u7cfb\u7edf\u8c03\u7528<\/b><\/font><\/td>\n\u6570\u7ec4<\/td>\n\u274c<\/td>\n\u2705<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                          💡 \u8bb0\u5fc6\u6280\u5de7：<\/font> execve \u662f\u552f\u4e00\u7684\u7cfb\u7edf\u8c03\u7528，\u540d\u5b57\u6700\u5168\u2014\u2014\u6709 v（\u6570\u7ec4）\u3001e（\u73af\u5883\u53d8\u91cf），\u4f46\u6ca1\u6709 p（\u4e0d\u641c PATH）\u3002\u5176\u4ed65\u4e2a\u90fd\u662f\u5bf9 execve \u7684\u5c01\u88c5，\u5404\u81ea\u6dfb\u52a0\u4e86\u4fbf\u5229\u529f\u80fd\u3002<\/p>\n

                          \n

                          \u516d\u3001🔄 \u73af\u5883\u53d8\u91cf\u7684\u4f20\u9012<\/h3>\n

                          6.1 \u4e0d\u4f20 envp \u65f6\u2014\u2014\u7ee7\u627f\u7236\u8fdb\u7a0b\u73af\u5883\u53d8\u91cf<\/h4>\n

                          execl\u3001execlp\u3001execv\u3001execvp \u8fd9\u56db\u4e2a\u51fd\u6570\u6ca1\u6709 envp \u53c2\u6570，\u90a3\u4e48\u65b0\u7a0b\u5e8f\u600e\u4e48\u83b7\u5f97\u73af\u5883\u53d8\u91cf？<\/p>\n

                          \u7b54\u6848\u662f：\u65b0\u7a0b\u5e8f\u4f1a \u81ea\u52a8\u7ee7\u627f<\/font> \u8c03\u7528\u8fdb\u7a0b\u7684\u73af\u5883\u53d8\u91cf\u3002\u8fd9\u901a\u8fc7\u4e00\u4e2a\u5168\u5c40\u53d8\u91cf environ<\/b><\/font> \u5b9e\u73b0\u3002<\/p>\n

                          #<\/span>include<\/span> <unistd.h><\/span><\/span><\/p>\n

                          \/\/ environ \u662f\u4e00\u4e2a\u5168\u5c40\u53d8\u91cf，\u6307\u5411\u73af\u5883\u53d8\u91cf\u5217\u8868<\/span>
                          \nextern<\/span> char<\/span> *<\/span>*<\/span>environ;<\/span><\/p>\n

                          \/\/ \u4e0d\u5e26 e \u7684 exec \u51fd\u6570，\u5185\u90e8\u76f8\u5f53\u4e8e：<\/span>
                          \n\/\/ execve(path, argv, environ);<\/span><\/p>\n

                          💡 environ \u662f\u4ec0\u4e48？\u4e3a\u4ec0\u4e48\u65e0\u9700\u4f20\u53c2\u5c31\u80fd\u83b7\u5f97\u73af\u5883\u53d8\u91cf？<\/font><\/p>\n

                          \u6bcf\u4e2aC\u7a0b\u5e8f\u542f\u52a8\u65f6，\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u628a\u73af\u5883\u53d8\u91cf\u5217\u8868\u653e\u5165\u8fdb\u7a0b\u7684\u5185\u5b58\u7a7a\u95f4\u4e2d，\u5e76\u901a\u8fc7\u5168\u5c40\u53d8\u91cf environ \u66b4\u9732\u51fa\u6765\u3002environ \u662f\u4e00\u4e2a\u6307\u5411\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u6307\u9488，\u6bcf\u4e2a\u5b57\u7b26\u4e32\u683c\u5f0f\u4e3a "KEY=***"\u3002\u4e0d\u5e26 e \u7684 exec \u51fd\u6570\u5185\u90e8\u5c31\u662f\u62ff environ \u4f20\u7ed9\u4e86 execve，\u6240\u4ee5\u4f60\u4e0d\u9700\u8981\u663e\u5f0f\u4f20\u53c2，\u65b0\u7a0b\u5e8f\u4e5f\u80fd\u81ea\u52a8\u83b7\u5f97\u5f53\u524d\u8fdb\u7a0b\u7684\u6240\u6709\u73af\u5883\u53d8\u91cf\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48 main \u51fd\u6570\u4e0d\u63a5\u6536\u73af\u5883\u53d8\u91cf\u53c2\u6570，\u7a0b\u5e8f\u91cc\u7528 getenv("PATH") \u4e5f\u80fd\u62ff\u5230 PATH \u7684\u539f\u56e0\u3002<\/p>\n

                          6.2 \u4f20 envp \u65f6\u2014\u2014\u8986\u76d6\u5f0f\u66ff\u6362<\/h4>\n

                          execle \u548c execve \u8fd9\u4e24\u4e2a\u5e26 e \u7684\u51fd\u6570，\u53ef\u4ee5\u663e\u5f0f\u4f20\u5165\u73af\u5883\u53d8\u91cf\u5217\u8868\u3002\u6ce8\u610f\u8fd9\u662f \u8986\u76d6\u5f0f<\/b><\/font> \u7684：<\/p>\n

                          \/\/ \u7236\u8fdb\u7a0b\u6709\u8fd9\u4e9b\u73af\u5883\u53d8\u91cf：PATH, HOME, USER, TERM, …<\/span><\/p>\n

                          char<\/span> *<\/span>const<\/span> envp[<\/span>]<\/span> =<\/span> {<\/span>
                          \n "PATH=\/bin:\/usr\/bin"<\/span>,<\/span>
                          \n "TERM=console"<\/span>,<\/span>
                          \n NULL<\/span>
                          \n}<\/span>;<\/span><\/p>\n

                          \/\/ \u65b0\u7a0b\u5e8f\u53ea\u80fd\u770b\u5230 PATH \u548c TERM，\u5176\u4ed6\u7684\u5168\u90e8\u4e22\u5931！<\/span>
                          \nexecve<\/span>(<\/span>"\/bin\/env"<\/span>,<\/span> argv,<\/span> envp)<\/span>;<\/span><\/p>\n

                          6.3 \u5982\u4f55\u65b0\u589e\u73af\u5883\u53d8\u91cf\u2014\u2014putenv()<\/h4>\n

                          \u5982\u679c\u60f3\u8ba9\u5b50\u8fdb\u7a0b\u7ee7\u627f\u7236\u8fdb\u7a0b\u7684\u6240\u6709\u73af\u5883\u53d8\u91cf \u52a0\u4e0a<\/b><\/font> \u4e00\u4e2a\u65b0\u7684\u73af\u5883\u53d8\u91cf，\u600e\u4e48\u529e？<\/p>\n

                          \u7528 putenv()<\/font> \u51fd\u6570：<\/p>\n

                          #<\/span>include<\/span> <stdlib.h><\/span><\/span><\/p>\n

                          int<\/span> putenv<\/span>(<\/span>char<\/span> *<\/span>string)<\/span>;<\/span>
                          \n\/\/ \u53c2\u6570\u683c\u5f0f："KEY=***"<\/span>
                          \n\/\/ \u6210\u529f\u8fd4\u56de0，\u5931\u8d25\u8fd4\u56de\u975e0<\/span><\/p>\n

                          putenv \u4f1a\u4fee\u6539\u5f53\u524d\u8fdb\u7a0b\u7684 environ \u5217\u8868，\u65b0\u589e\u6216\u4fee\u6539\u4e00\u4e2a\u73af\u5883\u53d8\u91cf\u3002<\/p>\n

                          \u4e24\u79cd\u65b0\u589e\u65b9\u5f0f<\/h5>\n\n\u65b9\u5f0f\u64cd\u4f5c\u9002\u7528\u573a\u666f<\/tr>\n\n\n\n
                          \u65b9\u5f0f\u4e00<\/font><\/td>\n\u5148 putenv("KEY=***")，\u518d\u8c03\u7528\u4e0d\u5e26 e \u7684 exec<\/td>\n\u7b80\u5355，\u7ee7\u627f\u5168\u90e8\u73af\u5883\u53d8\u91cf + \u65b0\u589e<\/td>\n<\/tr>\n
                          \u65b9\u5f0f\u4e8c<\/font><\/td>\n\u5148 putenv("KEY=***")，\u518d\u8c03\u7528\u5e26 e \u7684 exec，\u4f20\u5165 environ<\/td>\n\u9700\u8981\u5b8c\u5168\u63a7\u5236\u5b50\u8fdb\u7a0b\u73af\u5883\u53d8\u91cf<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                          \u65b9\u5f0f\u4e00\u793a\u4f8b：<\/p>\n

                          #<\/span>include<\/span> <stdio.h><\/span><\/span>
                          \n#<\/span>include<\/span> <stdlib.h><\/span><\/span>
                          \n#<\/span>include<\/span> <unistd.h><\/span><\/span><\/p>\n

                          int<\/span> main<\/span>(<\/span>)<\/span>
                          \n{<\/span>
                          \n \/\/ \u65b0\u589e\u4e00\u4e2a\u73af\u5883\u53d8\u91cf<\/span>
                          \n putenv<\/span>(<\/span>"MY_VAR=hello"<\/span>)<\/span>;<\/span><\/p>\n

                          \/\/ \u5b50\u8fdb\u7a0b\u4f1a\u7ee7\u627f environ（\u5305\u542bMY_VAR）<\/span>
                          \n char<\/span> *<\/span>const<\/span> argv[<\/span>]<\/span> =<\/span> {<\/span>"env"<\/span>,<\/span> NULL<\/span>}<\/span>;<\/span>
                          \n execvp<\/span>(<\/span>"env"<\/span>,<\/span> argv)<\/span>;<\/span> \/\/ \u4e0d\u5e26e，\u81ea\u52a8\u7ee7\u627fenviron<\/span><\/p>\n

                          perror<\/span>(<\/span>"execvp"<\/span>)<\/span>;<\/span>
                          \n exit<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
                          \n}<\/span><\/p>\n

                          \u65b9\u5f0f\u4e8c\u793a\u4f8b：<\/p>\n

                          #<\/span>include<\/span> <stdio.h><\/span><\/span>
                          \n#<\/span>include<\/span> <stdlib.h><\/span><\/span>
                          \n#<\/span>include<\/span> <unistd.h><\/span><\/span><\/p>\n

                          int<\/span> main<\/span>(<\/span>)<\/span>
                          \n{<\/span>
                          \n extern<\/span> char<\/span> *<\/span>*<\/span>environ;<\/span><\/p>\n

                          \/\/ \u65b0\u589e\u73af\u5883\u53d8\u91cf\u5230environ<\/span>
                          \n putenv<\/span>(<\/span>"MY_VAR=hello"<\/span>)<\/span>;<\/span><\/p>\n

                          char<\/span> *<\/span>const<\/span> argv[<\/span>]<\/span> =<\/span> {<\/span>"other_program"<\/span>,<\/span> NULL<\/span>}<\/span>;<\/span><\/p>\n

                          \/\/ \u663e\u5f0f\u4f20\u5165environ（\u5df2\u88abputenv\u4fee\u6539\u8fc7）<\/span>
                          \n execve<\/span>(<\/span>".\/other"<\/span>,<\/span> argv,<\/span> environ)<\/span>;<\/span><\/p>\n

                          perror<\/span>(<\/span>"execve"<\/span>)<\/span>;<\/span>
                          \n exit<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
                          \n}<\/span><\/p>\n

                          💡 \u4e24\u79cd\u65b9\u5f0f\u7684\u533a\u522b：<\/font> \u65b9\u5f0f\u4e00\u8ba9\u5b50\u8fdb\u7a0b\u7ee7\u627f\u5168\u90e8\u73af\u5883\u53d8\u91cf + \u65b0\u589e\u7684；\u65b9\u5f0f\u4e8c\u53ef\u4ee5 \u5b8c\u5168\u63a7\u5236<\/b><\/font> \u5b50\u8fdb\u7a0b\u770b\u5230\u54ea\u4e9b\u73af\u5883\u53d8\u91cf（\u5148 putenv \u518d\u4f20 environ，\u6216\u81ea\u5df1\u6784\u9020 envp \u6570\u7ec4）\u3002\u5e26 e \u7684\u51fd\u6570\u914d\u5408 putenv + environ，\u65e2\u80fd\u5728\u539f\u6709\u57fa\u7840\u4e0a\u589e\u91cf\u4fee\u6539，\u53c8\u80fd\u5b8c\u5168\u81ea\u5b9a\u4e49\u3002<\/p>\n

                          \n

                          \u4e03\u3001🤔 \u4e3a\u4ec0\u4e48\u66ff\u6362\u4e0d\u5f71\u54cd\u7236\u8fdb\u7a0b<\/h3>\n

                          \u5f53\u6211\u4eec\u5728 fork \u51fa\u7684\u5b50\u8fdb\u7a0b\u4e2d\u8c03\u7528 exec \u66ff\u6362\u7a0b\u5e8f\u65f6，\u7236\u8fdb\u7a0b\u5b8c\u5168\u4e0d\u53d7\u5f71\u54cd，\u7ee7\u7eed\u6b63\u5e38\u6267\u884c\u3002\u539f\u56e0\u6709 \u4e24\u4e2a<\/b><\/font>：<\/p>\n

                          7.1 \u539f\u56e0\u4e00：\u5199\u65f6\u62f7\u8d1d（Copy-on-Write）<\/h4>\n

                          fork \u521b\u5efa\u5b50\u8fdb\u7a0b\u65f6，\u7236\u5b50\u8fdb\u7a0b \u5171\u4eab\u540c\u4e00\u4efd\u7269\u7406\u5185\u5b58<\/font>（\u4ee3\u7801\u6bb5\u3001\u6570\u636e\u6bb5\u7b49）\u3002\u53ea\u6709\u5f53\u67d0\u4e00\u65b9\u5c1d\u8bd5 \u5199\u5165<\/b><\/font> \u65f6，\u5185\u6838\u624d\u4f1a\u771f\u6b63\u590d\u5236\u4e00\u4efd\u3002<\/p>\n

                          exec \u8c03\u7528\u540e，\u5185\u6838\u4f1a\u4e3a\u65b0\u7a0b\u5e8f\u5206\u914d \u5168\u65b0\u7684\u7269\u7406\u5185\u5b58\u9875<\/font> \u6765\u52a0\u8f7d\u4ee3\u7801\u6bb5\u548c\u6570\u636e\u6bb5\u3002\u5b50\u8fdb\u7a0b\u7684\u9875\u8868\u88ab\u6307\u5411\u65b0\u9875\u9762，\u7236\u8fdb\u7a0b\u7684\u9875\u8868\u4ecd\u7136\u6307\u5411\u539f\u6765\u7684\u9875\u9762\u2014\u2014\u4e24\u8005\u4ece\u6b64 \u5b8c\u5168\u72ec\u7acb<\/font>\u3002<\/p>\n

                          7.2 \u539f\u56e0\u4e8c：\u5730\u5740\u7a7a\u95f4\u9694\u79bb<\/h4>\n

                          \u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u6709 \u72ec\u7acb\u7684\u865a\u62df\u5730\u5740\u7a7a\u95f4<\/font>\u3002exec \u66ff\u6362\u7684\u662f \u5f53\u524d\u8fdb\u7a0b<\/b><\/font> \u7684\u5730\u5740\u7a7a\u95f4，\u4e0d\u4f1a\u78b0\u7236\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u3002<\/p>\n\n\u539f\u56e0\u8bf4\u660e<\/tr>\n\n\n\n
                          \u5199\u65f6\u62f7\u8d1d<\/font><\/td>\nfork \u540e\u5171\u4eab\u7269\u7406\u9875，exec \u89e6\u53d1\u65b0\u5206\u914d，\u7236\u5b50\u9875\u8868\u5206\u79bb<\/td>\n<\/tr>\n
                          \u5730\u5740\u7a7a\u95f4\u9694\u79bb<\/font><\/td>\n\u6bcf\u4e2a\u8fdb\u7a0b\u72ec\u7acb\u865a\u62df\u5730\u5740\u7a7a\u95f4，exec \u53ea\u66ff\u6362\u5f53\u524d\u8fdb\u7a0b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                          💡 \u4e00\u53e5\u8bdd\u603b\u7ed3：<\/font> fork \u8ba9\u5b50\u8fdb\u7a0b\u83b7\u5f97\u4e86\u72ec\u7acb\u7684\u5730\u5740\u7a7a\u95f4（COW \u673a\u5236），exec \u53ea\u662f\u5728\u81ea\u5df1\u7684\u5730\u5740\u7a7a\u95f4\u91cc"\u7ffb\u65b0"，\u5173\u7236\u8fdb\u7a0b\u4ec0\u4e48\u4e8b\u90fd\u6ca1\u6709\u3002<\/p>\n

                          \n

                          \u516b\u3001🧪 \u5b8c\u6574\u5b9e\u6218\u793a\u4f8b<\/h3>\n

                          \u4e0b\u9762\u7528\u4e00\u4e2a\u5b8c\u6574\u7684\u793a\u4f8b\u6f14\u793a fork + exec + wait \u7684\u7ecf\u5178\u7ec4\u5408：<\/p>\n

                          #<\/span>include<\/span> <stdio.h><\/span><\/span>
                          \n#<\/span>include<\/span> <stdlib.h><\/span><\/span>
                          \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
                          \n#<\/span>include<\/span> <sys\/types.h><\/span><\/span>
                          \n#<\/span>include<\/span> <sys\/wait.h><\/span><\/span><\/p>\n

                          int<\/span> main<\/span>(<\/span>)<\/span>
                          \n{<\/span>
                          \n printf<\/span>(<\/span>"== \u7236\u8fdb\u7a0b\u5f00\u59cb ==\\\\n"<\/span>)<\/span>;<\/span><\/p>\n

                          pid_t<\/span> pid =<\/span> fork<\/span>(<\/span>)<\/span>;<\/span>
                          \n if<\/span> (<\/span>pid <<\/span> 0<\/span>)<\/span> {<\/span>
                          \n perror<\/span>(<\/span>"fork"<\/span>)<\/span>;<\/span>
                          \n exit<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
                          \n }<\/span><\/p>\n

                          if<\/span> (<\/span>pid ==<\/span> 0<\/span>)<\/span> {<\/span>
                          \n \/\/ ========== \u5b50\u8fdb\u7a0b ==========<\/span>
                          \n printf<\/span>(<\/span>"\u5b50\u8fdb\u7a0b PID=%d，\u51c6\u5907\u6267\u884c ls -l\\\\n"<\/span>,<\/span> getpid<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
                          \n sleep<\/span>(<\/span>1<\/span>)<\/span>;<\/span> \/\/ \u6545\u610f\u77611\u79d2<\/span><\/p>\n

                          \/\/ \u7528 execlp \u6267\u884c ls \u547d\u4ee4<\/span>
                          \n execlp<\/span>(<\/span>"ls"<\/span>,<\/span> "ls"<\/span>,<\/span> "-l"<\/span>,<\/span> NULL<\/span>)<\/span>;<\/span><\/p>\n

                          \/\/ \u5982\u679c\u8d70\u5230\u8fd9\u91cc，\u8bf4\u660e exec \u5931\u8d25\u4e86<\/span>
                          \n perror<\/span>(<\/span>"execlp failed"<\/span>)<\/span>;<\/span>
                          \n exit<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
                          \n }<\/span> else<\/span> {<\/span>
                          \n \/\/ ========== \u7236\u8fdb\u7a0b ==========<\/span>
                          \n printf<\/span>(<\/span>"\u7236\u8fdb\u7a0b PID=%d，\u7b49\u5f85\u5b50\u8fdb\u7a0b %d\\\\n"<\/span>,<\/span> getpid<\/span>(<\/span>)<\/span>,<\/span> pid)<\/span>;<\/span><\/p>\n

                          int<\/span> status;<\/span>
                          \n pid_t<\/span> ret =<\/span> waitpid<\/span>(<\/span>pid,<\/span> &<\/span>status,<\/span> 0<\/span>)<\/span>;<\/span><\/p>\n

                          if<\/span> (<\/span>ret ><\/span> 0<\/span> &&<\/span> WIFEXITED<\/span>(<\/span>status)<\/span>)<\/span> {<\/span>
                          \n printf<\/span>(<\/span>"\u5b50\u8fdb\u7a0b\u6b63\u5e38\u9000\u51fa，\u9000\u51fa\u7801=%d\\\\n"<\/span>,<\/span> WEXITSTATUS<\/span>(<\/span>status)<\/span>)<\/span>;<\/span>
                          \n }<\/span> else<\/span> if<\/span> (<\/span>ret ><\/span> 0<\/span>)<\/span> {<\/span>
                          \n printf<\/span>(<\/span>"\u5b50\u8fdb\u7a0b\u5f02\u5e38\u9000\u51fa，\u4fe1\u53f7=%d\\\\n"<\/span>,<\/span> WTERMSIG<\/span>(<\/span>status)<\/span>)<\/span>;<\/span>
                          \n }<\/span> else<\/span> {<\/span>
                          \n perror<\/span>(<\/span>"waitpid"<\/span>)<\/span>;<\/span>
                          \n }<\/span><\/p>\n

                          printf<\/span>(<\/span>"== \u7236\u8fdb\u7a0b\u7ed3\u675f ==\\\\n"<\/span>)<\/span>;<\/span>
                          \n }<\/span><\/p>\n

                          return<\/span> 0<\/span>;<\/span>
                          \n}<\/span><\/p>\n

                          \u8fd0\u884c\u7ed3\u679c：<\/p>\n

                          == \u7236\u8fdb\u7a0b\u5f00\u59cb ==
                          \n\u7236\u8fdb\u7a0b PID=5000，\u7b49\u5f85\u5b50\u8fdb\u7a0b 5001
                          \n\u5b50\u8fdb\u7a0b PID=5001，\u51c6\u5907\u6267\u884c ls -l
                          \ntotal 8
                          \n-rwxr-xr-x 1 user user 8560 Jul 26 17:00 a.out
                          \n-rw-r–r– 1 user user 1200 Jul 26 17:00 demo.c
                          \n\u5b50\u8fdb\u7a0b\u6b63\u5e38\u9000\u51fa，\u9000\u51fa\u7801=0
                          \n== \u7236\u8fdb\u7a0b\u7ed3\u675f ==<\/p>\n

                          💡 \u89c2\u5bdf\u8981\u70b9：<\/font><\/p>\n

                            \n
                          • \u5b50\u8fdb\u7a0b\u7684 printf \u6253\u5370\u4e86，\u8bf4\u660e fork \u6210\u529f<\/li>\n
                          • ls -l \u7684\u8f93\u51fa\u6765\u4e86，\u8bf4\u660e exec \u66ff\u6362\u6210\u529f<\/li>\n
                          • \u5b50\u8fdb\u7a0b execlp \u4e4b\u540e\u7684 perror \u6ca1\u6709\u6267\u884c，\u8bf4\u660e\u66ff\u6362\u6210\u529f\u540e\u4e0d\u518d\u8fd4\u56de<\/li>\n
                          • \u7236\u8fdb\u7a0b\u7684 waitpid \u6210\u529f\u56de\u6536\u4e86\u5b50\u8fdb\u7a0b<\/li>\n<\/ul>\n
                            \n

                            \u4e5d\u3001🤔 \u51e0\u4e2a\u601d\u8003\u9898<\/h3>\n

                            \u5b66\u5b8c\u672c\u6587，\u6765\u8bd5\u8bd5\u56de\u7b54\u8fd9\u4e9b\u95ee\u9898：<\/p>\n

                            1\ufe0f\u20e3 exec \u6210\u529f\u540e，\u8fdb\u7a0b\u7684 PID \u4f1a\u53d8\u5417？<\/h4>\n

                            \u7b54： \u4e0d\u4f1a\u53d8\u3002exec \u53ea\u66ff\u6362\u4e86\u8fdb\u7a0b\u7684\u4ee3\u7801\u6bb5\u3001\u6570\u636e\u6bb5\u3001\u5806\u548c\u6808，\u4f46 PCB（\u8fdb\u7a0b\u63a7\u5236\u5757）\u4e0d\u53d8<\/b><\/font>\u3002PID \u5b58\u50a8\u5728 PCB \u4e2d，\u6240\u4ee5 PID \u4fdd\u6301\u4e0d\u53d8\u3002\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48 shell \u80fd\u7528 waitpid \u7b49\u5f85\u5230\u6267\u884c\u4e86\u65b0\u7a0b\u5e8f\u7684\u5b50\u8fdb\u7a0b\u2014\u2014\u56e0\u4e3a PID \u6ca1\u53d8\u3002<\/p>\n

                            💡 \u8fdb\u7a0b\u7684"\u8eab\u4efd\u8bc1"\u4e0d\u53d8，\u53ea\u662f"\u5de5\u4f5c\u5185\u5bb9"\u53d8\u4e86\u3002<\/p>\n

                            2\ufe0f\u20e3 execve \u548c\u5176\u4ed65\u4e2a\u51fd\u6570\u6709\u4ec0\u4e48\u672c\u8d28\u533a\u522b？<\/h4>\n

                            \u7b54： execve \u662f\u7cfb\u7edf\u8c03\u7528<\/b><\/font>（\u7531\u5185\u6838\u76f4\u63a5\u5b9e\u73b0，\u5bf9\u5e94 man 2 \u624b\u518c），\u5176\u4ed65\u4e2a\u662f C \u5e93\u51fd\u6570<\/font>（\u7531 glibc \u5c01\u88c5，\u5bf9\u5e94 man 3 \u624b\u518c）\u3002\u5e93\u51fd\u6570\u6700\u7ec8\u90fd\u4f1a\u8c03\u7528 execve \u7cfb\u7edf\u8c03\u7528，\u5b83\u4eec\u53ea\u662f\u505a\u4e86\u53c2\u6570\u683c\u5f0f\u8f6c\u6362\u7684\u4fbf\u5229\u5c01\u88c5：<\/p>\n

                              \n
                            • l \u53d8\u4f53：\u628a\u53ef\u53d8\u53c2\u6570\u5217\u8868\u8f6c\u6210\u6570\u7ec4（\u7ed9 execve \u7684 argv）<\/li>\n
                            • p \u53d8\u4f53：\u5728 PATH \u73af\u5883\u53d8\u91cf\u4e2d\u641c\u7d22\u53ef\u6267\u884c\u6587\u4ef6<\/li>\n
                            • \u4e0d\u5e26 e \u7684\u51fd\u6570：\u81ea\u52a8\u4f20\u5165 environ \u7ed9 execve<\/li>\n<\/ul>\n

                              3\ufe0f\u20e3 \u4e3a\u4ec0\u4e48 execle \u4f20\u7684 envp \u662f\u8986\u76d6\u5f0f\u7684，\u800c\u4e0d\u662f\u8ffd\u52a0\u5f0f\u7684？<\/h4>\n

                              \u7b54： \u56e0\u4e3a\u5728\u64cd\u4f5c\u7cfb\u7edf\u5c42\u9762，execve \u7cfb\u7edf\u8c03\u7528 \u5b8c\u5168\u66ff\u6362<\/b><\/font> \u4e86\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4，\u73af\u5883\u53d8\u91cf\u533a\u57df\u4e5f\u88ab \u5168\u90e8\u66ff\u6362<\/font>\u3002execve \u4e0d\u77e5\u9053\u4e5f\u4e0d\u5173\u5fc3\u539f\u6765\u6709\u54ea\u4e9b\u73af\u5883\u53d8\u91cf，\u5b83\u53ea\u8ba4\u4f60\u4f20\u5165\u7684 envp\u3002\u5982\u679c\u9700\u8981"\u5728\u539f\u6709\u57fa\u7840\u4e0a\u65b0\u589e"，\u5e94\u8be5\u5148\u7528 putenv() \u4fee\u6539 environ，\u518d\u4f20\u5165 environ（\u6216\u4f7f\u7528\u4e0d\u5e26e\u7684\u51fd\u6570\u81ea\u52a8\u7ee7\u627f）\u3002<\/p>\n

                              💡 \u8986\u76d6\u5f0f\u7684\u54f2\u5b66：\u7b80\u5355\u76f4\u63a5，\u4e0d\u4f1a\u6709\u610f\u5916\u7684\u73af\u5883\u53d8\u91cf\u6cc4\u9732\u7ed9\u65b0\u7a0b\u5e8f\u3002<\/p>\n

                              4\ufe0f\u20e3 \u5982\u679c execlp \u627e\u4e0d\u5230\u53ef\u6267\u884c\u6587\u4ef6，\u4f1a\u53d1\u751f\u4ec0\u4e48？<\/h4>\n

                              \u7b54： execlp \u5728 PATH \u6307\u5b9a\u7684\u6240\u6709\u76ee\u5f55\u4e2d\u641c\u7d22\u5b8c\u6bd5\u540e\u4ecd\u672a\u627e\u5230\u6587\u4ef6，\u4f1a \u8fd4\u56de -1<\/b><\/font>，\u5e76\u8bbe\u7f6e errno \u4e3a ENOENT<\/b><\/font>（No such file or directory）\u3002\u6b64\u65f6\u8fdb\u7a0b\u7684\u4ee3\u7801\u6bb5\u548c\u6570\u636e\u6bb5 \u4e0d\u53d7\u5f71\u54cd<\/b><\/font>，\u7ee7\u7eed\u6267\u884c exec \u4e4b\u540e\u7684\u4ee3\u7801\u3002<\/p>\n

                              execlp<\/span>(<\/span>"nonexistent_command"<\/span>,<\/span> "nonexistent_command"<\/span>,<\/span> NULL<\/span>)<\/span>;<\/span>
                              \n\/\/ \u8fd4\u56de-1，errno = ENOENT<\/span>
                              \nperror<\/span>(<\/span>"execlp"<\/span>)<\/span>;<\/span> \/\/ \u8f93\u51fa：execlp: No such file or directory<\/span><\/p>\n

                              \n

                              \u672c\u8282\u5b8c<\/h3>\n

                              📝 \u4f5c\u8005：say-fall | \u7f16\u8f91：say-fall | 🌟 \u539f\u521b\u4e0d\u6613，\u5982\u679c\u5bf9\u4f60\u6709\u5e2e\u52a9，\u8bb0\u5f97 👍 \u70b9\u8d5e + \u2b50 \u6536\u85cf<\/font> \u54e6！<\/font><\/p>\n","protected":false},"excerpt":{"rendered":"

                              \u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362：\u4ece\u539f\u7406\u5230\u5b9e\u6218，\u5f7b\u5e95\u641e\u61c2exec\u51fd\u6570\u65cf 🌈say-fall：\u4e2a\u4eba\u4e3b\u9875 🚀\u4e13\u680f：\u300a\u624b\u628a\u624b\u6559\u4f60\u5b66\u4f1aC\u300b | \u300a\u7cfb\u7edf\u6df1\u5165Linux\u64cd\u4f5c\u7cfb\u7edf\u300b | \u300a\u6570\u636e\u7ed3\u6784\u4e0e\u7b97\u6cd5\u300b 💪\u683c\u8a00：\u505a\u597d\u4f60\u81ea\u5df1，\u624d\u80fd\u5438\u5f15\u66f4\u591a\u4eba，\u4e0e\u4ed6\u4eec\u5171\u8d62，\u8fd9\u624d\u662f\u6700\u597d\u7684\u6210\u957f\u65b9\u5f0f\u3002 📝 \u524d\u8a00
                              \n\u5728\u524d\u9762\u7684\u6587\u7ae0\u4e2d，\u6211\u4eec\u5df2\u7ecf\u5b66\u4e60\u4e86 f<\/p>\n","protected":false},"author":2,"featured_media":89822,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[9137,59,58,292,43,44],"topic":[],"class_list":["post-89823","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-atomgit","tag-centos","tag-linux","tag-292","tag-43","tag-44"],"yoast_head":"\n\u3010Linux\u7cfb\u7edf\u7f16\u7a0b\u3011\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362\uff1a\u4e3a\u4ec0\u4e48\u66ff\u6362\u3001\u5982\u4f55\u66ff\u6362\u3001\u66ff\u6362\u6548\u679c\u548c\u5e95\u5c42\u539f\u7406 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/89823.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010Linux\u7cfb\u7edf\u7f16\u7a0b\u3011\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362\uff1a\u4e3a\u4ec0\u4e48\u66ff\u6362\u3001\u5982\u4f55\u66ff\u6362\u3001\u66ff\u6362\u6548\u679c\u548c\u5e95\u5c42\u539f\u7406 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362：\u4ece\u539f\u7406\u5230\u5b9e\u6218，\u5f7b\u5e95\u641e\u61c2exec\u51fd\u6570\u65cf 🌈say-fall：\u4e2a\u4eba\u4e3b\u9875 🚀\u4e13\u680f：\u300a\u624b\u628a\u624b\u6559\u4f60\u5b66\u4f1aC\u300b | \u300a\u7cfb\u7edf\u6df1\u5165Linux\u64cd\u4f5c\u7cfb\u7edf\u300b | \u300a\u6570\u636e\u7ed3\u6784\u4e0e\u7b97\u6cd5\u300b 💪\u683c\u8a00：\u505a\u597d\u4f60\u81ea\u5df1，\u624d\u80fd\u5438\u5f15\u66f4\u591a\u4eba，\u4e0e\u4ed6\u4eec\u5171\u8d62，\u8fd9\u624d\u662f\u6700\u597d\u7684\u6210\u957f\u65b9\u5f0f\u3002 📝 \u524d\u8a00 \u5728\u524d\u9762\u7684\u6587\u7ae0\u4e2d，\u6211\u4eec\u5df2\u7ecf\u5b66\u4e60\u4e86 f\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/89823.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-03T13:41:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260803134106-6a709a7231a7a.jpg\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/89823.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/89823.html\",\"name\":\"\u3010Linux\u7cfb\u7edf\u7f16\u7a0b\u3011\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362\uff1a\u4e3a\u4ec0\u4e48\u66ff\u6362\u3001\u5982\u4f55\u66ff\u6362\u3001\u66ff\u6362\u6548\u679c\u548c\u5e95\u5c42\u539f\u7406 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-08-03T13:41:07+00:00\",\"dateModified\":\"2026-08-03T13:41:07+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/89823.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/89823.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/89823.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u3010Linux\u7cfb\u7edf\u7f16\u7a0b\u3011\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362\uff1a\u4e3a\u4ec0\u4e48\u66ff\u6362\u3001\u5982\u4f55\u66ff\u6362\u3001\u66ff\u6362\u6548\u679c\u548c\u5e95\u5c42\u539f\u7406\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u3010Linux\u7cfb\u7edf\u7f16\u7a0b\u3011\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362\uff1a\u4e3a\u4ec0\u4e48\u66ff\u6362\u3001\u5982\u4f55\u66ff\u6362\u3001\u66ff\u6362\u6548\u679c\u548c\u5e95\u5c42\u539f\u7406 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/89823.html","og_locale":"zh_CN","og_type":"article","og_title":"\u3010Linux\u7cfb\u7edf\u7f16\u7a0b\u3011\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362\uff1a\u4e3a\u4ec0\u4e48\u66ff\u6362\u3001\u5982\u4f55\u66ff\u6362\u3001\u66ff\u6362\u6548\u679c\u548c\u5e95\u5c42\u539f\u7406 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362：\u4ece\u539f\u7406\u5230\u5b9e\u6218，\u5f7b\u5e95\u641e\u61c2exec\u51fd\u6570\u65cf 🌈say-fall：\u4e2a\u4eba\u4e3b\u9875 🚀\u4e13\u680f：\u300a\u624b\u628a\u624b\u6559\u4f60\u5b66\u4f1aC\u300b | \u300a\u7cfb\u7edf\u6df1\u5165Linux\u64cd\u4f5c\u7cfb\u7edf\u300b | \u300a\u6570\u636e\u7ed3\u6784\u4e0e\u7b97\u6cd5\u300b 💪\u683c\u8a00：\u505a\u597d\u4f60\u81ea\u5df1，\u624d\u80fd\u5438\u5f15\u66f4\u591a\u4eba，\u4e0e\u4ed6\u4eec\u5171\u8d62，\u8fd9\u624d\u662f\u6700\u597d\u7684\u6210\u957f\u65b9\u5f0f\u3002 📝 \u524d\u8a00 \u5728\u524d\u9762\u7684\u6587\u7ae0\u4e2d，\u6211\u4eec\u5df2\u7ecf\u5b66\u4e60\u4e86 f","og_url":"https:\/\/www.wsisp.com\/helps\/89823.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-08-03T13:41:07+00:00","og_image":[{"url":"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260803134106-6a709a7231a7a.jpg"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"8 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/89823.html","url":"https:\/\/www.wsisp.com\/helps\/89823.html","name":"\u3010Linux\u7cfb\u7edf\u7f16\u7a0b\u3011\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362\uff1a\u4e3a\u4ec0\u4e48\u66ff\u6362\u3001\u5982\u4f55\u66ff\u6362\u3001\u66ff\u6362\u6548\u679c\u548c\u5e95\u5c42\u539f\u7406 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-08-03T13:41:07+00:00","dateModified":"2026-08-03T13:41:07+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/89823.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/89823.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/89823.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"\u3010Linux\u7cfb\u7edf\u7f16\u7a0b\u3011\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362\uff1a\u4e3a\u4ec0\u4e48\u66ff\u6362\u3001\u5982\u4f55\u66ff\u6362\u3001\u66ff\u6362\u6548\u679c\u548c\u5e95\u5c42\u539f\u7406"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/89823","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=89823"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/89823\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media\/89822"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=89823"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=89823"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=89823"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=89823"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}