{"id":90358,"date":"2026-08-05T07:00:35","date_gmt":"2026-08-04T23:00:35","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/90358.html"},"modified":"2026-08-05T07:00:35","modified_gmt":"2026-08-04T23:00:35","slug":"%e3%80%90ctf%e3%80%91%e4%b8%80%e9%94%ae%e6%9f%a5%e6%89%belinux%e4%b8%ad%e7%9a%84flag%e8%84%9a%e6%9c%ac-find_flag-sh","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/90358.html","title":{"rendered":"\u3010CTF\u3011\u4e00\u952e\u67e5\u627eLinux\u4e2d\u7684flag\u811a\u672c find_flag.sh"},"content":{"rendered":"

\u4e00\u3001\u4e00\u952e\u67e5\u627eflag\u811a\u672c find_flag.sh<\/h2>\n

\u529f\u80fd：\u9012\u5f52\u626b\u63cf\u6307\u5b9a\u76ee\u5f55\/\u5355\u4e2a\u6587\u4ef6，\u7cbe\u51c6\u5339\u914d flag{\u4efb\u610f\u5b57\u7b26} \u683c\u5f0f，\u9ad8\u4eae\u8f93\u51fa\u3001\u663e\u793a\u6587\u4ef6\u8def\u5f84+\u884c\u6570，\u517c\u5bb9\u666e\u901a\u6587\u4ef6\u3001\u538b\u7f29\u5305\u4e0d\u89e3\u6790\u3001\u8fc7\u6ee4\u4e8c\u8fdb\u5236\u5783\u573e\u6587\u4ef6\u3002<\/p>\n

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

# \u989c\u8272\u5b9a\u4e49
\nRED='\\\\033[0;31m'
\nGREEN='\\\\033[0;32m'
\nNC='\\\\033[0m'<\/p>\n

# \u5e2e\u52a9\u8bf4\u660e
\nusage(){
\n echo -e "${GREEN}\u4f7f\u7528\u65b9\u5f0f：${NC}"
\n echo " .\/find_flag.sh \u6587\u4ef6\u540d # \u67e5\u627e\u5355\u4e2a\u6587\u4ef6"
\n echo " .\/find_flag.sh \u76ee\u5f55\u8def\u5f84 # \u9012\u5f52\u67e5\u627e\u6574\u4e2a\u76ee\u5f55"
\n echo " .\/find_flag.sh # \u9ed8\u8ba4\u9012\u5f52\u67e5\u627e\u5f53\u524d\u76ee\u5f55"
\n echo -e "\u5339\u914d\u89c4\u5219：\u7cbe\u51c6\u67e5\u627e flag{xxxx} \u683c\u5f0f\u5b57\u7b26\u4e32\\\\n"
\n}<\/p>\n

# \u5224\u65ad\u5165\u53c2
\nif [ $# -eq 0 ];then
\n target="."
\nelif [ "$1" = "-h" ] || [ "$1" = "–help" ];then
\n usage
\n exit 0
\nelse
\n target="$1"
\nfi<\/p>\n

echo -e "${GREEN}==========\u5f00\u59cb\u626b\u63cf\u8def\u5f84：${target} ==========${NC}"
\necho ""<\/p>\n

# grep\u53c2\u6570\u89e3\u91ca：
\n# -r \u9012\u5f52\u904d\u5386 -n \u663e\u793a\u884c\u53f7 -I \u5ffd\u7565\u4e8c\u8fdb\u5236\u6587\u4ef6 -o \u53ea\u8f93\u51fa\u5339\u914d\u5185\u5bb9
\n# -E \u6b63\u5219\u6269\u5c55，\u6b63\u5219：flag\\\\{[^{}]*\\\\}
\ngrep -rnIoE 'flag\\\\{[^{}]*\\\\}' "$target" –color=auto 2>\/dev\/null<\/p>\n

echo ""
\necho -e "${GREEN}==========\u626b\u63cf\u7ed3\u675f ==========${NC}"<\/p>\n

\u4e8c\u3001\u4f7f\u7528\u6b65\u9aa4<\/h3>\n
  • \u521b\u5efa\u811a\u672c<\/li>\n

    vim find_flag.sh<\/p>\n

    \u7c98\u8d34\u4e0a\u9762\u5168\u90e8\u4ee3\u7801，\u4fdd\u5b58\u9000\u51fa\u3002<\/p>\n

  • \u8d4b\u4e88\u6267\u884c\u6743\u9650<\/li>\n

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

  • \u4e09\u79cd\u7528\u6cd5<\/li>\n

    # 1. \u626b\u63cf\u5f53\u524d\u5168\u90e8\u76ee\u5f55
    \n.\/find_flag.sh<\/p>\n

    # 2. \u626b\u63cf\u6307\u5b9a\u5355\u4e2a\u6587\u4ef6
    \n.\/find_flag.sh \/tmp\/test.txt<\/p>\n

    # 3. \u9012\u5f52\u626b\u63cf\u6307\u5b9a\u6587\u4ef6\u5939
    \n.\/find_flag.sh \/home\/user\/ctf<\/p>\n

    # 4. \u67e5\u770b\u5e2e\u52a9
    \n.\/find_flag.sh -h<\/p>\n

    \u4e09\u3001\u7cbe\u7b80\u5355\u884c\u547d\u4ee4（\u65e0\u9700\u811a\u672c，\u4e34\u65f6\u5feb\u901f\u67e5\u627e）<\/h2>\n

    grep -rnIoE 'flag\\\\{[^{}]*\\\\}' . –color=auto 2>\/dev\/null<\/p>\n

    \u56db\u3001\u8865\u5145\u62d3\u5c55\u811a\u672c（\u8fdb\u9636：\u4fdd\u5b58\u7ed3\u679c\u5230\u65e5\u5fd7）<\/h2>\n

    #!\/bin\/bash
    \nRED='\\\\033[0;31m'
    \nGREEN='\\\\033[0;32m'
    \nNC='\\\\033[0m'
    \nlogfile="flag_search.log"
    \n> $logfile
    \ntarget=${1:-.}<\/p>\n

    echo -e "${GREEN}\u5f00\u59cb\u626b\u63cf，\u7ed3\u679c\u540c\u65f6\u8f93\u51fa\u5c4f\u5e55\u4e0e $logfile${NC}"
    \ngrep -rnIoE 'flag\\\\{[^{}]*\\\\}' "$target" 2>\/dev\/null | tee $logfile
    \necho -e "${GREEN}\u67e5\u627e\u5b8c\u6210，\u65e5\u5fd7\u5df2\u4fdd\u5b58\u81f3 $logfile${NC}"<\/p>\n

    \u5173\u952e\u6b63\u5219\u8bf4\u660e<\/h3>\n

    flag\\\\{[^{}]*\\\\}<\/p>\n

      \n
    • flag\\\\{：\u56fa\u5b9a\u5f00\u5934flag{<\/li>\n
    • [^{}]*：\u5339\u914d{}\u5185\u90e8\u6240\u6709\u975e\u5927\u62ec\u53f7\u5b57\u7b26，\u9632\u6b62\u8de8\u62ec\u53f7\u8bef\u5339\u914d<\/li>\n
    • \\\\}：\u95ed\u5408\u53f3\u5927\u62ec\u53f7<\/li>\n<\/ul>\n

      \u7279\u6027\u8bf4\u660e<\/h3>\n
    • \u81ea\u52a8\u5ffd\u7565\u4e8c\u8fdb\u5236\u6587\u4ef6\u3001\u8bbe\u5907\u6587\u4ef6\u3001\u62a5\u9519\u4fe1\u606f；<\/li>\n
    • \u9ad8\u4eae\u6807\u7ea2\u5339\u914d\u5230\u7684flag；<\/li>\n
    • \u8f93\u51fa\u683c\u5f0f：\u6587\u4ef6\u8def\u5f84:\u884c\u6570:flag{xxx}；<\/li>\n
    • \u9002\u914dCTF\u5e38\u89c1flag\u683c\u5f0f，\u901a\u7528\u6027\u6781\u5f3a\u3002<\/li>\n","protected":false},"excerpt":{"rendered":"

      \u4e00\u3001\u4e00\u952e\u67e5\u627eflag\u811a\u672c find_flag.sh\u529f\u80fd：\u9012\u5f52\u626b\u63cf\u6307\u5b9a\u76ee\u5f55\/\u5355\u4e2a\u6587\u4ef6，\u7cbe\u51c6\u5339\u914d flag{\u4efb\u610f\u5b57\u7b26} \u683c\u5f0f，\u9ad8\u4eae\u8f93\u51fa\u3001\u663e\u793a\u6587\u4ef6\u8def\u5f84\u884c\u6570，\u517c\u5bb9\u666e\u901a\u6587\u4ef6\u3001\u538b\u7f29\u5305\u4e0d\u89e3\u6790\u3001\u8fc7\u6ee4\u4e8c\u8fdb\u5236\u5783\u573e\u6587\u4ef6\u3002#!\/bin\/bash# \u989c\u8272\u5b9a\u4e49
      \nRED\\\\033[0;31m
      \nGREEN\\\\033[0;32m
      \nNC\\\\033[0m# \u5e2e\u52a9\u8bf4\u660e
      \nusage(){echo -e \\”${GREEN}\u4f7f\u7528\u65b9\u5f0f：${NC}\\”echo \\”<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[43,44],"topic":[],"class_list":["post-90358","post","type-post","status-publish","format-standard","hentry","category-server","tag-43","tag-44"],"yoast_head":"\n\u3010CTF\u3011\u4e00\u952e\u67e5\u627eLinux\u4e2d\u7684flag\u811a\u672c find_flag.sh - \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\/90358.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010CTF\u3011\u4e00\u952e\u67e5\u627eLinux\u4e2d\u7684flag\u811a\u672c find_flag.sh - 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