{"id":42,"date":"2025-06-29T19:38:04","date_gmt":"2025-06-29T11:38:04","guid":{"rendered":"https:\/\/www.rbfwq.com\/blog\/?p=42"},"modified":"2025-06-29T19:38:04","modified_gmt":"2025-06-29T11:38:04","slug":"%e5%b8%b8%e7%94%a8shell%e8%84%9a%e6%9c%ac%e7%9a%84%e5%ae%9e%e7%94%a8%e6%8a%80%e5%b7%a7%e4%b8%8e%e6%9c%80%e4%bd%b3%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/www.idc61.com\/blog\/42.html","title":{"rendered":"\u5e38\u7528Shell\u811a\u672c\u7684\u5b9e\u7528\u6280\u5de7\u4e0e\u6700\u4f73\u5b9e\u8df5"},"content":{"rendered":"<p><h2>\u5e38\u7528Shell\u811a\u672c<\/h2>\n<\/p>\n<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.idc61.com\/blog\/wp-content\/uploads\/2025\/06\/Aq2b8KCF.jpg\" alt=\"\u5e38\u7528Shell\u811a\u672c\u7684\u5b9e\u7528\u6280\u5de7\u4e0e\u6700\u4f73\u5b9e\u8df5\" title=\"\u5e38\u7528Shell\u811a\u672c\u7684\u5b9e\u7528\u6280\u5de7\u4e0e\u6700\u4f73\u5b9e\u8df5\"><\/p>\n<p><h3>\u6280\u672f\u6982\u8ff0<\/h3>\n<\/p>\n<p><p>Shell\u811a\u672c\u662f\u4e00\u79cd\u7528\u4e8e\u81ea\u52a8\u5316\u64cd\u4f5c\u7684\u811a\u672c\u8bed\u8a00\uff0c\u5b83\u5728\u7c7bUnix\u7cfb\u7edf\u4e2d\u5c24\u5176\u5e38\u89c1\u3002\u901a\u8fc7Shell\u811a\u672c\uff0c\u53ef\u4ee5\u6279\u91cf\u6267\u884c\u547d\u4ee4\u3001\u7ba1\u7406\u7cfb\u7edf\u4efb\u52a1\u4ee5\u53ca\u5b9a\u671f\u751f\u6210\u62a5\u544a\u7b49\uff0c\u5927\u5927\u63d0\u9ad8\u4e86\u6548\u7387\u548c\u7075\u6d3b\u6027\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u5e38\u7528\u7684Shell\u811a\u672c\u53ca\u5176\u5177\u4f53\u64cd\u4f5c\u6b65\u9aa4\u3001\u547d\u4ee4\u793a\u4f8b\u548c\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n<\/p>\n<p><h3>\u57fa\u672c\u64cd\u4f5c\u6b65\u9aa4<\/h3>\n<\/p>\n<p><p>\u4ee5\u4e0b\u662f\u7f16\u5199\u548c\u8fd0\u884cShell\u811a\u672c\u7684\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n<\/p>\n<ol>\n<li><strong>\u521b\u5efaShell\u811a\u672c\u6587\u4ef6\uff1a<\/strong>\u4f7f\u7528\u6587\u672c\u7f16\u8f91\u5668\u5982vi\u6216nano\u521b\u5efa\u4e00\u4e2a\u65b0\u6587\u4ef6\u3002\u4f8b\u5982\uff0c\u547d\u540d\u4e3a<script.sh>\u3002<\/li>\n<li><strong>\u6dfb\u52a0Shebang\u884c\uff1a<\/strong>\u5728\u811a\u672c\u7684\u7b2c\u4e00\u884c\u6dfb\u52a0Shebang\uff0c\u6307\u660e\u4f7f\u7528\u7684Shell\u89e3\u91ca\u5668\u3002\u4f8b\u5982\uff0c\u4f7f\u7528bash\u65f6\uff0c\u5199\u4e3a\uff1a<\/li>\n<p><pre><code>#!\/bin\/bash<\/code><\/pre>\n<\/p>\n<li><strong>\u7f16\u5199\u811a\u672c\u5185\u5bb9\uff1a<\/strong>\u6839\u636e\u4efb\u52a1\u9700\u6c42\uff0c\u9010\u884c\u6dfb\u52a0\u9700\u8981\u6267\u884c\u7684\u547d\u4ee4\u4e0e\u903b\u8f91\u3002<\/li>\n<li><strong>\u8bbe\u7f6e\u6743\u9650\uff1a<\/strong>\u4f7f\u7528chmod\u547d\u4ee4\u4e3a\u811a\u672c\u8d4b\u4e88\u6267\u884c\u6743\u9650\uff1a<\/li>\n<p><pre><code>chmod +x script.sh<\/code><\/pre>\n<\/p>\n<li><strong>\u8fd0\u884c\u811a\u672c\uff1a<\/strong>\u6267\u884c\u811a\u672c\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/li>\n<p><pre><code>.\/script.sh<\/code><\/pre>\n<\/p>\n<\/ol>\n<p><h3>\u5e38\u7528\u547d\u4ee4\u793a\u4f8b<\/h3>\n<\/p>\n<p><h4>1. \u6253\u5370\u8f93\u51fa<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528echo\u547d\u4ee4\u6253\u5370\u6587\u672c\u6216\u53d8\u91cf\uff1a<\/p>\n<\/p>\n<p><pre><code>echo \"Hello, World!\"<\/code><\/pre>\n<\/p>\n<p><p>\u5982\u679c\u9700\u8981\u6253\u5370\u53d8\u91cf\u5185\u5bb9\uff0c\u91c7\u7528\uff1a<\/p>\n<\/p>\n<p><pre><code>name=\"Tom\"<\/p>\r\n<p>echo \"My name is $name\"<\/code><\/pre>\n<\/p>\n<p><h4>2. \u53d8\u91cf\u4f7f\u7528<\/h4>\n<\/p>\n<p><p>\u5728Shell\u811a\u672c\u4e2d\u5b9a\u4e49\u548c\u4f7f\u7528\u53d8\u91cf\uff1a<\/p>\n<\/p>\n<p><pre><code># \u5b9a\u4e49\u53d8\u91cf<\/p>\r\n<p>count=10<\/p>\r\n\r\n<p># \u4f7f\u7528\u53d8\u91cf<\/p>\r\n<p>echo \"Count is $count\"<\/code><\/pre>\n<\/p>\n<p><p><strong>\u6ce8\u610f\uff1a<\/strong>\u53d8\u91cf\u540d\u4e0d\u80fd\u4ee5\u6570\u5b57\u5f00\u5934\uff0c\u4e14\u4e0d\u80fd\u4f7f\u7528\u7a7a\u683c\u3002<\/p>\n<\/p>\n<p><h4>3. \u6761\u4ef6\u5224\u65ad<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528if\u8bed\u53e5\u8fdb\u884c\u6761\u4ef6\u5224\u65ad\uff1a<\/p>\n<\/p>\n<p><pre><code>if [ $count -lt 20 ]; then<\/p>\r\n<p>    echo \"Count is less than 20\"<\/p>\r\n<p>else<\/p>\r\n<p>    echo \"Count is 20 or more\"<\/p>\r\n<p>fi<\/code><\/pre>\n<\/p>\n<p><p><strong>\u6ce8\u610f\uff1a<\/strong>\u5224\u65ad\u6761\u4ef6\u4e2d\u9700\u8981\u4f7f\u7528\u7a7a\u683c\uff0c-lt\u8868\u793a\u5c0f\u4e8e\uff0c-gt\u8868\u793a\u5927\u4e8e\u3002<\/p>\n<\/p>\n<p><h4>4. \u5faa\u73af<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528for\u5faa\u73af\u904d\u5386\u5217\u8868\uff1a<\/p>\n<\/p>\n<p><pre><code>for i in {1..5}; do<\/p>\r\n<p>    echo \"Number: $i\"<\/p>\r\n<p>done<\/code><\/pre>\n<\/p>\n<p><p>\u4f7f\u7528while\u5faa\u73af\uff0c\u76f4\u5230\u6761\u4ef6\u4e0d\u6210\u7acb\u4e3a\u6b62\uff1a<\/p>\n<\/p>\n<p><pre><code>while [ $count -gt 0 ]; do<\/p>\r\n<p>    echo \"Count is $count\"<\/p>\r\n<p>    count=$((count - 1))<\/p>\r\n<p>done<\/code><\/pre>\n<\/p>\n<p><h4>5. \u51fd\u6570<\/h4>\n<\/p>\n<p><p>\u5b9a\u4e49\u548c\u8c03\u7528\u51fd\u6570\uff1a<\/p>\n<\/p>\n<p><pre><code>function greeting {<\/p>\r\n<p>    echo \"Hello, $1\"<\/p>\r\n<p>}<\/p>\r\n\r\n<p>greeting \"Alice\"<\/code><\/pre>\n<\/p>\n<p><h3>\u6ce8\u610f\u4e8b\u9879<\/h3>\n<\/p>\n<ul>\n<li>\u786e\u4fdd\u6bcf\u4e2a\u547d\u4ee4\u7684\u8bed\u6cd5\u6b63\u786e\uff0c\u5c24\u5176\u662f\u6761\u4ef6\u5224\u65ad\u548c\u5faa\u73af\u3002<\/li>\n<li>\u5728\u4f7f\u7528\u53d8\u91cf\u65f6\uff0c\u8bf7\u52a1\u5fc5\u5728\u53d8\u91cf\u540d\u524d\u52a0\u4e0a$\u7b26\u53f7\u3002<\/li>\n<li>\u5bf9\u4e8e\u9700\u8981\u6267\u884c\u7684\u547d\u4ee4\u8def\u5f84\uff0c\u5e94\u4f7f\u7528\u7edd\u5bf9\u8def\u5f84\u4ee5\u907f\u514d\u8def\u5f84\u95ee\u9898\u3002<\/li>\n<li>\u8c03\u8bd5\u65f6\u53ef\u4f7f\u7528set -x\u547d\u4ee4\uff0c\u67e5\u770b\u547d\u4ee4\u6267\u884c\u7684\u8be6\u7ec6\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<p><h3>\u5b9e\u7528\u6280\u5de7<\/h3>\n<\/p>\n<p><h4>1. \u6355\u83b7\u547d\u4ee4\u8f93\u51fa<\/h4>\n<\/p>\n<p><p>\u5c06\u547d\u4ee4\u7684\u8f93\u51fa\u5b58\u50a8\u5230\u53d8\u91cf\u4e2d\uff1a<\/p>\n<\/p>\n<p><pre><code>output=$(date)<\/code><\/pre>\n<\/p>\n<p><h4>2. \u91cd\u5b9a\u5411\u8f93\u51fa<\/h4>\n<\/p>\n<p><p>\u5c06\u8f93\u51fa\u91cd\u5b9a\u5411\u5230\u6587\u4ef6\uff1a<\/p>\n<\/p>\n<p><pre><code>echo \"Log entry\" >> logfile.txt<\/code><\/pre>\n<\/p>\n<p><h4>3. \u9519\u8bef\u5904\u7406<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528\u6761\u4ef6\u5224\u65ad\u5904\u7406\u9519\u8bef\u3002\u4f8b\u5982\uff0c\u68c0\u67e5\u6587\u4ef6\u662f\u5426\u5b58\u5728\uff1a<\/p>\n<\/p>\n<p><pre><code>filename=\"test.txt\"<\/p>\r\n<p>if [ -e $filename ]; then<\/p>\r\n<p>    echo \"$filename exists.\"<\/p>\r\n<p>else<\/p>\r\n<p>    echo \"$filename does not exist.\"<\/p>\r\n<p>fi<\/code><\/pre>\n<\/p>\n<p><h4>4. \u4f7f\u7528\u6570\u7ec4<\/h4>\n<\/p>\n<p><p>\u5b9a\u4e49\u548c\u8bbf\u95ee\u6570\u7ec4\uff1a<\/p>\n<\/p>\n<p><pre><code>fruits=(\"apple\" \"banana\" \"cherry\")<\/p>\r\n<p>echo \"First fruit is: ${fruits[0]}\"<\/code><\/pre>\n<\/p>\n<p><h4>5. \u8ba1\u65f6\u5668<\/h4>\n<\/p>\n<p><p>\u8ba1\u65f6\u67d0\u4e2a\u64cd\u4f5c\u7684\u6267\u884c\u65f6\u95f4\uff1a<\/p>\n<\/p>\n<p><pre><code>start_time=$(date +%s)<\/p>\r\n<p># \u6267\u884c\u4e00\u4e9b\u64cd\u4f5c<\/p>\r\n<p>end_time=$(date +%s)<\/p>\r\n<p>execution_time=$(( end_time - start_time ))<\/p>\r\n<p>echo \"Execution time: $execution_time seconds\"<\/code><\/pre>\n<\/p>\n<p><h3>\u603b\u7ed3<\/h3>\n<\/p>\n<p><p>\u4f7f\u7528Shell\u811a\u672c\u53ef\u4ee5\u6709\u6548\u5730\u7b80\u5316\u7cfb\u7edf\u7ba1\u7406\u548c\u65e5\u5e38\u7ef4\u62a4\u5de5\u4f5c\u3002\u4e86\u89e3\u5404\u79cd\u547d\u4ee4\u548c\u7f16\u5199\u903b\u8f91\u662f\u638c\u63e1Shell\u811a\u672c\u7684\u5173\u952e\u3002<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5e38\u7528Shell\u811a\u672c \u6280\u672f\u6982\u8ff0 Shell\u811a\u672c\u662f\u4e00\u79cd\u7528\u4e8e\u81ea\u52a8\u5316\u64cd\u4f5c\u7684\u811a\u672c\u8bed\u8a00\uff0c\u5b83\u5728\u7c7bUnix\u7cfb\u7edf\u4e2d\u5c24\u5176\u5e38\u89c1\u3002\u901a\u8fc7Shell\u811a\u672c\uff0c\u53ef\u4ee5\u6279\u91cf\u6267\u884c\u547d\u4ee4\u3001\u7ba1\u7406\u7cfb\u7edf\u4efb\u52a1\u4ee5\u53ca\u5b9a\u671f\u751f\u6210\u62a5\u544a\u7b49\uff0c\u5927\u5927\u63d0\u9ad8\u4e86\u6548\u7387\u548c\u7075\u6d3b\u6027\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u5e38\u7528\u7684Shell\u811a\u672c\u53ca\u5176\u5177&#8230;<\/p>\n","protected":false},"author":1,"featured_media":43,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"topic":[],"class_list":["post-42","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-jishu"],"_links":{"self":[{"href":"https:\/\/www.idc61.com\/blog\/wp-json\/wp\/v2\/posts\/42","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.idc61.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.idc61.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.idc61.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.idc61.com\/blog\/wp-json\/wp\/v2\/comments?post=42"}],"version-history":[{"count":1,"href":"https:\/\/www.idc61.com\/blog\/wp-json\/wp\/v2\/posts\/42\/revisions"}],"predecessor-version":[{"id":45,"href":"https:\/\/www.idc61.com\/blog\/wp-json\/wp\/v2\/posts\/42\/revisions\/45"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.idc61.com\/blog\/wp-json\/wp\/v2\/media\/43"}],"wp:attachment":[{"href":"https:\/\/www.idc61.com\/blog\/wp-json\/wp\/v2\/media?parent=42"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.idc61.com\/blog\/wp-json\/wp\/v2\/categories?post=42"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.idc61.com\/blog\/wp-json\/wp\/v2\/tags?post=42"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.idc61.com\/blog\/wp-json\/wp\/v2\/topic?post=42"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}