{"id":51088,"date":"2025-08-10T17:14:27","date_gmt":"2025-08-10T09:14:27","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/51088.html"},"modified":"2025-08-10T17:14:27","modified_gmt":"2025-08-10T09:14:27","slug":"linux%e8%bd%af%e4%bb%b6%e7%bc%96%e7%a8%8b1-%ef%bc%88shall%e5%91%bd%e4%bb%a4%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/51088.html","title":{"rendered":"Linux\u8f6f\u4ef6\u7f16\u7a0b1.\uff08shall\u547d\u4ee4\uff09"},"content":{"rendered":"

1.Linux\u7cfb\u7edf\u6982\u8ff0<\/h2>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5e38\u89c1\u7684Linux\u7cfb\u7edf\u6709Ubuntu\u3001Debian\u3001Redhat\u3001CentOS\u7b49\u3002Linux\u64cd\u4f5c\u7cfb\u7edf\u662f\u64cd\u4f5c\u7cfb\u7edf\u7684\u6838\u5fc3，\u4e5f\u79f0\u4e3a\u5185\u6838，\u5185\u6838\u7684\u4e3b\u8981\u529f\u80fd\u4e3a\u5185\u5b58\u7ba1\u7406，\u591a\u4efb\u52a1\u7ba1\u7406，\u6587\u4ef6\u7cfb\u7edf\u7ba1\u7406，\u591a\u4efb\u52a1\u95f4\u7684\u901a\u4fe1，\u7f51\u7edc\u7ba1\u7406，\u786c\u4ef6\u8bbe\u5907\u7ba1\u7406<\/p>\n

2.shall\u547d\u4ee4<\/h2>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0shell\u662f\u64cd\u4f5c\u7cfb\u7edf\u7684\u5916\u58f3，\u4e3b\u8981\u4f5c\u7528\u662f\u4fdd\u62a4Linux\u5185\u6838，\u9632\u6b62\u7528\u6237\u76f4\u63a5\u64cd\u4f5c\u5185\u6838\u5bfc\u81f4\u7684\u5f02\u5e38\u95ee\u9898 \u547d\u4ee4\u89e3\u91ca\u5668\u7684\u4f5c\u7528，\u7528\u6237\u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4\u7ed9\u5230shell，\u5e76\u8f6c\u6362\u4e3a\u5bf9\u5e94\u7684\u5185\u6838\u4ee3\u7801\u5b9e\u73b0\u529f\u80fd\u3002<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\"\"<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02.1\u57fa\u672cshall\u547d\u4ee4<\/h3>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ls \u67e5\u770b\u6587\u4ef6，cd \u8fdb\u5165\u76ee\u5f55，touch\u521b\u5efa\u6587\u4ef6，rm \u5220\u9664\u6587\u4ef6 ，mkdir \u521b\u5efa\u6587\u4ef6\u5939， rmdir \u5220\u9664\u6587\u4ef6\u5939， cp\u62f7\u8d1d\u6587\u4ef6，\u00a0 mv\u79fb\u52a8\u6587\u4ef6\u3002\u8fd9\u4e9b\u5728\u4e4b\u524d\u7684Linux\u7cfb\u7edf\u64cd\u4f5c\u547d\u4ee4\u91cc\u6709\u8bf4\u660e\u3002<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02.2\u6587\u4ef6\u67e5\u770b\u547d\u4ee4<\/h3>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a01. cat\u547d\u4ee4：\u67e5\u770b\u6587\u4ef6\u4e2d\u7684\u5185\u5bb9<\/p>\n

cat \u6587\u4ef6\u540d<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02. head\u547d\u4ee4： \u67e5\u770b\u6587\u4ef6\u5f00\u5934\u5185\u5bb9<\/p>\n

head -n \u884c\u6570 \u6587\u4ef6\u540d<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03. tail\u547d\u4ee4： \u67e5\u770b\u6587\u4ef6\u672b\u5c3e\u5185\u5bb9<\/p>\n

tail -n \u884c\u6570 \u6587\u4ef6\u540d<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02.3\u901a\u914d\u7b26<\/h3>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u591a\u7528\u6765\u642d\u914dshell\u547d\u4ee4\u4f7f\u7528，\u64cd\u4f5c\u591a\u4e2a\u6587\u4ef6\u3002<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a01. *：\u5339\u914d\u4efb\u610f\u957f\u5ea6\u3001\u4efb\u610f\u5b57\u7b26\u7684\u6587\u4ef6\u540d<\/p>\n

ls file*.txt<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02. ?：\u5339\u914d\u4e00\u4f4d\u957f\u5ea6\u3001\u4efb\u610f\u5b57\u7b26\u7684\u6587\u4ef6\u540d<\/p>\n

ls file_??.txt<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03. []：\u5339\u914d\u4e00\u4f4d\u957f\u5ea6\u3001\u6307\u5b9a\u5b57\u7b26\u7684\u6587\u4ef6\u540d<\/p>\n

ls file_[1-5].txt \/\/\u5bfb\u627efile_1\u52305\u7684\u6587\u4ef6
\n ls file_[^3].txt \/\/\u5bfb\u627e\u9664\u4e86file_3\u7684\u6587\u4ef6
\n ls file_[1,3,5].txt \/\/\u5bfb\u627efile_1，3\u548c5\u7684\u6587\u4ef6<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02.4\u7ba1\u9053<\/h3>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5c06\u524d\u9762\u547d\u4ee4\u7684\u8f93\u51fa\u4f5c\u4e3a\u540e\u7eed\u547d\u4ee4\u7684\u8f93\u5165<\/p>\n

.\/a.out | grep "\u5b57\u7b26\u4e32"
\n ls file* | grep ".sh"<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02.5\u91cd\u5b9a\u5411<\/h3>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5c06\u539f\u672c\u8981\u8f93\u51fa\u5728\u7ec8\u7aef\u7684\u5185\u5bb9\u5b9a\u5411\u5230\u6587\u4ef6\u4e2d<\/p>\n

\u8986\u76d6\u91cd\u5b9a\u5411（\u5c06\u539f\u6765\u5185\u5bb9\u8986\u76d6）<\/p>\n

echo "hello world" > file.txt<\/p>\n

\u8ffd\u52a0\u91cd\u5b9a\u5411（\u5728\u539f\u5185\u5bb9\u672b\u5c3e\u6dfb\u52a0\u65b0\u5185\u5bb9）<\/p>\n

echo "hello world" >> file.txt<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02.6\u6587\u4ef6\u67e5\u627e\u547d\u4ee4<\/h3>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a01. find\u547d\u4ee4<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u67e5\u627e\u6587\u4ef6<\/p>\n

find . -name \u6587\u4ef6\u540d<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u67e5\u627e\u5305\u542b\u67d0\u4e2a\u5b57\u7b26\u4e32\u7684\u6587\u4ef6<\/p>\n

find . -type f -print0 | xargs -0 grep -l "\u5b57\u7b26\u4e32"<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02. whereis\u547d\u4ee4：\u67e5\u627e\u4e8c\u8fdb\u5236\u53ef\u6267\u884c\u7a0b\u5e8f<\/p>\n

whereis valgrind<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02.7\u5e38\u89c1\u547d\u4ee4<\/h3>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a01. echo\u547d\u4ee4： \u5728\u7ec8\u7aef\u4e0a\u663e\u793a\u5185\u5bb9<\/p>\n

echo "hello world"<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02. grep\u547d\u4ee4： \u67e5\u627e\u5305\u542b\u5b57\u7b26\u4e32\u5bf9\u5e94\u7684\u884c\u5e76\u663e\u793a<\/p>\n

grep "\u5b57\u7b26\u4e32" \u6587\u4ef6\u540d<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02.8\u538b\u7f29\u548c\u89e3\u538b\u547d\u4ee4<\/h3>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0.tar.gz\u683c\u5f0f\u7684\u538b\u7f29\u548c\u89e3\u538b<\/p>\n

tar -zcvf \u6587\u4ef6\u540d.tar.gz \u76ee\u5f55\u540d\/* \/\/\u538b\u7f29
\n tar -zxvf \u6587\u4ef6\u540d.tar.gz \/\/\u89e3\u538b<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0.tar.bz2\u683c\u5f0f\u7684\u538b\u7f29\u548c\u89e3\u538b<\/p>\n

tar -jcvf \u6587\u4ef6\u540d.tar.bz2 \u76ee\u5f55\u540d\/* \/\/\u538b\u7f29
\ntar -jxvf \u6587\u4ef6\u540d.tar.bz2 \/\/\u89e3\u538b<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02.9\u7528\u6237\u7ba1\u7406\u547d\u4ee4<\/h3>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a01. useradd \u65b0\u5efa\u7528\u6237<\/p>\n

sudo useradd \u7528\u6237\u540d<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02. userdel \u5220\u9664\u7528\u6237<\/p>\n

sudo userdel \u7528\u6237\u540d<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03. passwd \u4fee\u6539\u5bc6\u7801<\/p>\n

sudo passwd \u7528\u6237\u540d<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a04. su \u5207\u6362\u7528\u6237<\/p>\n

su \u7528\u6237\u540d
\nexit \u9000\u51fa\u5f53\u524d\u7528\u6237<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a05. chmod \u4fee\u6539\u6587\u4ef6\u6743\u9650<\/p>\n

chmod \u6743\u9650\u503c \u6587\u4ef6\u540d
\n0664
\n 110 110 100
\n rw- rw- r–
\n rwx:\u521b\u5efa\u8be5\u6587\u4ef6\u7684\u7528\u6237\u5bf9\u6587\u4ef6\u662f\u5426\u62e5\u6709\u8bfb\u5199\u6267\u884c\u6743\u9650
\nrwx:\u521b\u5efa\u6587\u4ef6\u540c\u7ec4\u7684\u7528\u6237\u5bf9\u6587\u4ef6\u662f\u5426\u62e5\u6709\u8bfb\u5199\u6267\u884c\u6743\u9650
\nrwx:\u5176\u4f59\u4eba\u662f\u5426\u62e5\u6709\u8bfb\u5199\u6267\u884c\u6743\u9650<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a06. chown \u4fee\u6539\u6587\u4ef6\u7684\u6240\u5c5e\u7528\u6237<\/p>\n

chown \u7528\u6237\u540d \u6587\u4ef6\u540d<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a07. chgrp \u4fee\u6539\u6587\u4ef6\u7684\u6240\u5c5e\u7ec4<\/p>\n

chogrp \u7ec4\u540d \u6587\u4ef6\u540d<\/p>\n

3.shall\u811a\u672c<\/h2>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7f16\u7a0b\u8bed\u8a00\u7684\u5206\u4e3a\u7f16\u8bd1\u578b\u8bed\u8a00（C\u3001C++\u3001C#\u3001Java）\u548c\u89e3\u91ca\u578b\u8bed\u8a00（shell\u3001Python\u3001javascript）<\/p>\n

\u7f16\u8bd1\u578b\u8bed\u8a00\u5148\u7f16\u8bd1\u518d\u8fd0\u884c，\u6709\u4e30\u5bcc\u7684\u6570\u636e\u7c7b\u578b\u3001\u64c5\u957f\u8ba1\u7b97，\u6267\u884c\u6548\u7387\u9ad8，\u4f46\u5f00\u53d1\u6548\u7387\u4f4e\u3002<\/p>\n

\u89e3\u91ca\u578b\u8bed\u8a00\u8fb9\u7ffb\u8bd1\u8fb9\u6267\u884c，\u64c5\u957f\u5bf9\u7cfb\u7edf\u7ef4\u62a4\u7ba1\u7406，\u6267\u884c\u6548\u7387\u4f4e，\u5f00\u53d1\u6548\u7387\u9ad8\u3002<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03.1shell\u811a\u672c\u7f16\u7a0b<\/h3>\n

1. \u7f16\u5199\u811a\u672c\u6587\u4ef6<\/p>\n

vim filename.sh<\/p>\n

2. \u4f7f\u7528chmod\u547d\u4ee4\u4e3a\u811a\u672c\u52a0\u4e0a\u6267\u884c\u6743\u9650<\/p>\n

chmod +x filename.sh <\/p>\n

3. \u8fd0\u884c\u811a\u672c<\/p>\n

.\/filename.sh <\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03.2\u6307\u5b9a\u811a\u672c\u5bf9\u5e94\u7684\u8fd0\u884cshell<\/h3>\n

#!\/bin\/bash<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03.3shell\u811a\u672c\u7684\u8f93\u5165\u548c\u8f93\u51fa<\/h3>\n

1. \u8f93\u5165<\/p>\n

#\u4ece\u7ec8\u7aef\u63a5\u6536\u7528\u6237\u8f93\u5165\u653e\u5165filename\u53d8\u91cf\u4e2d
\nread filename<\/p>\n

2. \u8f93\u51fa<\/p>\n

#\u5c06\u53d8\u91cffilename\u4e2d\u7684\u5185\u5bb9\u6253\u5370\u5728\u5c4f\u5e55\u4e0a
\necho $filename<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03.4shell\u811a\u672c\u4e2d\u7684\u5f15\u53f7<\/h3>\n

1. \u5355\u5f15\u53f7 \u539f\u5c01\u4e0d\u52a8\u6253\u5370\u5f15\u53f7\u4e2d\u7684\u5185\u5bb9<\/p>\n

echo '$filename'<\/p>\n

2. \u53cc\u5f15\u53f7 \u5c06\u53cc\u5f15\u53f7\u4e2d\u7684\u53d8\u91cf\u66ff\u6362\u6210\u5bf9\u5e94\u7684\u503c\u6253\u5370<\/p>\n

echo "$filename"<\/p>\n

3. \u5012\u5f15\u53f7 \u5c06\u5f15\u53f7\u4e2d\u7684\u5185\u5bb9\u5f53\u505a\u547d\u4ee4\u6765\u5904\u7406<\/p>\n

echo `seq 10`<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03.5shell\u4e2d\u7684\u53d8\u91cf<\/h3>\n

1.\u73af\u5883\u53d8\u91cf shell\u81ea\u5e26\u7684\u4e00\u4e9b\u53d8\u91cf，\u5728\u7a0b\u5e8f\u8fd0\u884c\u65f6\u5df2\u7ecf\u5b58\u5728\u4e86<\/p>\n

echo "$HOME"
\n echo "$PWD"
\n echo "$PATH"
\n …<\/p>\n

2. \u4f4d\u7f6e\u53d8\u91cf<\/p>\n

$0 :\u811a\u672c\u7684\u540d\u79f0
\n$1 :\u6267\u884c\u811a\u672c\u65f6\u4f20\u5165\u7684\u53c2\u65701
\n$2 :\u6267\u884c\u811a\u672c\u65f6\u4f20\u5165\u7684\u53c2\u65702
\n$# :\u4f20\u5165\u53c2\u6570\u7684\u4e2a\u6570
\n$? :\u4e0a\u4e00\u6761shell\u8bed\u53e5\u7684\u6267\u884c\u7ed3\u679c
\n$$ :\u811a\u672c\u8fd0\u884c\u7684\u8fdb\u7a0b\u7f16\u53f7<\/p>\n

3. \u81ea\u5b9a\u4e49\u53d8\u91cf<\/p>\n

value=0\/\/\u5b9a\u4e49
\n $value\/\/\u8c03\u7528<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03.6\u5206\u652f\u7ed3\u6784<\/h3>\n

1）if \u5206\u652f<\/p>\n

if \u8868\u8fbe\u5f0f
\nthen
\n \u8bed\u53e5\u5757
\nelse
\n \u8bed\u53e5\u5757
\nfi<\/p>\n

2）\u7531test\u547d\u4ee4\u5b9e\u73b0\u8868\u8fbe\u5f0f（test\u4e5f\u53ef\u4ee5\u901a\u8fc7[]\u6765\u66ff\u4ee3）<\/p>\n

-gt #\u5927\u4e8e
\n-lt #\u5c0f\u4e8e
\n-ge #\u5927\u4e8e\u7b49\u4e8e
\n-le #\u5c0f\u4e8e\u7b49\u4e8e
\n-eq #\u7b49\u4e8e
\n-ne #\u4e0d\u7b49\u4e8e
\n-b #\u68c0\u6d4b\u6587\u4ef6\u662f\u5426\u5b58\u5728，\u5e76\u5224\u65ad\u662f\u5426\u4e3a\u5757\u8bbe\u5907
\n-c #\u68c0\u6d4b\u6587\u4ef6\u662f\u5426\u5b58\u5728，\u5e76\u5224\u65ad\u662f\u5426\u4e3a\u5b57\u7b26\u8bbe\u5907
\n-d #\u68c0\u6d4b\u6587\u4ef6\u662f\u5426\u5b58\u5728，\u5e76\u5224\u65ad\u662f\u5426\u4e3a\u76ee\u5f55\u6587\u4ef6
\n-e #\u68c0\u6d4b\u6587\u4ef6\u662f\u5426\u5b58\u5728
\n-f #\u68c0\u6d4b\u6587\u4ef6\u662f\u5426\u5b58\u5728，\u5e76\u5224\u65ad\u662f\u5426\u4e3a\u666e\u901a\u6587\u4ef6
\n-L #\u68c0\u6d4b\u6587\u4ef6\u662f\u5426\u5b58\u5728，\u5e76\u5224\u65ad\u662f\u5426\u4e3a\u94fe\u63a5\u6587\u4ef6
\n-p #\u68c0\u6d4b\u6587\u4ef6\u662f\u5426\u5b58\u5728，\u5e76\u5224\u65ad\u662f\u5426\u4e3a\u7ba1\u9053\u6587\u4ef6
\n-S #\u68c0\u6d4b\u6587\u4ef6\u662f\u5426\u5b58\u5728，\u5e76\u5224\u65ad\u662f\u5426\u4e3a\u5957\u63a5\u5b57\u6587\u4ef6<\/p>\n

3）\u00a0case \u5206\u652f<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03.7\u5faa\u73af\u7ed3\u6784<\/h3>\n

1）while\u5faa\u73af<\/p>\n

while \u8868\u8fbe\u5f0f
\ndo
\n \u8bed\u53e5\u5757
\ndone<\/p>\n

2）until<\/p>\n

until \u8868\u8fbe\u5f0f
\ndo
\n \u8bed\u53e5\u5757
\ndone<\/p>\n

3）for<\/p>\n

for i in \u6570\u636e\u96c6
\ndo
\n \u8bed\u53e5\u5757
\ndone<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03.8\u6570\u7ec4<\/h3>\n

#!\/bin\/bash
\narray=("hello" "world" "how" "are" "you")
\n i=0
\n echo ================================
\n for ((i = 0; i < 5; i++))
\n do
\n echo ${array[$i]}
\n done<\/p>\n

echo ================================
\n echo "${array[*]}"<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03.9\u00a0\u51fd\u6570<\/h3>\n

#!\/bin\/bash
\nadd()
\n {
\n sum=`expr $1 + $2`
\n echo "$sum"
\n return $sum
\n }
\n read num1
\n read num2
\n #\u83b7\u5f97\u51fd\u6570\u5185\u8f93\u51fa\u7684\u5b57\u7b26\u4e32
\nret=`add $num1 $num2`
\n #\u6253\u5370\u51fd\u6570\u7684\u8fd0\u884c\u7684\u503c
\necho "$?"
\n #\u6253\u5370\u51fd\u6570\u5185\u8f93\u51fa\u7684\u5b57\u7b26\u4e32
\necho "ret = $ret"<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb101\u6b21\u3002\u672c\u6587\u4ecb\u7ecd\u4e86Linux\u7cfb\u7edf\u7684\u57fa\u672c\u6982\u5ff5\u548c\u5e38\u7528shell\u547d\u4ee4\u3002\u4e3b\u8981\u5185\u5bb9\u5305\u62ec\uff1a1\uff09Linux\u7cfb\u7edf\u6982\u8ff0\uff0c\u4ecb\u7ecdUbuntu\u3001Debian\u7b49\u5e38\u89c1\u53d1\u884c\u7248\u548c\u5185\u6838\u529f\u80fd\uff1b2\uff09Shell\u57fa\u7840\u547d\u4ee4\uff0c\u5305\u62ec\u6587\u4ef6\u64cd\u4f5c\u3001\u67e5\u770b\u3001\u67e5\u627e\u7b49\u547d\u4ee4\uff0c\u4ee5\u53ca\u901a\u914d\u7b26\u3001\u7ba1\u9053\u3001\u91cd\u5b9a\u5411\u7b49\u6280\u5de7\uff1b3\uff09Shell\u811a\u672c\u7f16\u7a0b\uff0c\u6db5\u76d6\u53d8\u91cf\u3001\u5206\u652f\u7ed3\u6784\u3001\u5faa\u73af\u7ed3\u6784\u3001\u6570\u7ec4\u548c\u51fd\u6570\u7b49\u7f16\u7a0b\u5143\u7d20\u3002\u6587\u7ae0\u7cfb\u7edf\u5730\u68b3\u7406\u4e86Linux\u7cfb\u7edf\u7ba1\u7406\u548cShell\u7f16\u7a0b\u7684\u6838\u5fc3\u77e5\u8bc6\u70b9\uff0c\u4e3a\u521d\u5b66\u8005\u63d0\u4f9b\u4e86\u5b9e\u7528\u7684\u64cd\u4f5c\u6307\u5357\u548c\u7f16\u7a0b\u53c2\u8003\u3002<\/p>\n","protected":false},"author":2,"featured_media":51087,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,5028,371,43,305,44],"topic":[],"class_list":["post-51088","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-linux","tag-shall","tag-371","tag-43","tag-305","tag-44"],"yoast_head":"\nLinux\u8f6f\u4ef6\u7f16\u7a0b1.\uff08shall\u547d\u4ee4\uff09 - 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