{"id":116,"date":"2019-02-10T18:02:43","date_gmt":"2019-02-10T10:02:43","guid":{"rendered":"http:\/\/b.yesiyu.top\/?p=116"},"modified":"2019-02-10T18:02:43","modified_gmt":"2019-02-10T10:02:43","slug":"shell-%e5%8f%98%e9%87%8f","status":"publish","type":"post","link":"https:\/\/b.yesiyu.top\/?p=116","title":{"rendered":"Shell \u53d8\u91cf"},"content":{"rendered":"<h1>Shell \u53d8\u91cf<\/h1>\n<p>\u5b9a\u4e49\u53d8\u91cf\u65f6\uff0c\u53d8\u91cf\u540d\u4e0d\u52a0\u7f8e\u5143\u7b26\u53f7\uff08$\uff0cPHP\u8bed\u8a00\u4e2d\u53d8\u91cf\u9700\u8981\uff09\uff0c\u5982\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">your_name<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"runoob.com\"<\/span><\/pre>\n<p>\u6ce8\u610f\uff0c\u53d8\u91cf\u540d\u548c\u7b49\u53f7\u4e4b\u95f4\u4e0d\u80fd\u6709\u7a7a\u683c\uff0c\u8fd9\u53ef\u80fd\u548c\u4f60\u719f\u6089\u7684\u6240\u6709\u7f16\u7a0b\u8bed\u8a00\u90fd\u4e0d\u4e00\u6837\u3002\u540c\u65f6\uff0c\u53d8\u91cf\u540d\u7684\u547d\u540d\u987b\u9075\u5faa\u5982\u4e0b\u89c4\u5219\uff1a<\/p>\n<ul>\n<li>\u547d\u540d\u53ea\u80fd\u4f7f\u7528\u82f1\u6587\u5b57\u6bcd\uff0c\u6570\u5b57\u548c\u4e0b\u5212\u7ebf\uff0c\u9996\u4e2a\u5b57\u7b26\u4e0d\u80fd\u4ee5\u6570\u5b57\u5f00\u5934\u3002<\/li>\n<li>\u4e2d\u95f4\u4e0d\u80fd\u6709\u7a7a\u683c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u5212\u7ebf\uff08_\uff09\u3002<\/li>\n<li>\u4e0d\u80fd\u4f7f\u7528\u6807\u70b9\u7b26\u53f7\u3002<\/li>\n<li>\u4e0d\u80fd\u4f7f\u7528bash\u91cc\u7684\u5173\u952e\u5b57\uff08\u53ef\u7528help\u547d\u4ee4\u67e5\u770b\u4fdd\u7559\u5173\u952e\u5b57\uff09\u3002<\/li>\n<\/ul>\n<p>\u6709\u6548\u7684 Shell \u53d8\u91cf\u540d\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">RUNOOB\r\nLD_LIBRARY_PATH\r\n_var\r\nvar2<\/span><\/pre>\n<p>\u65e0\u6548\u7684\u53d8\u91cf\u547d\u540d\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pun\">?<\/span><span class=\"kwd\">var<\/span><span class=\"pun\">=<\/span><span class=\"lit\">123<\/span><span class=\"pln\">\r\nuser<\/span><span class=\"pun\">*<\/span><span class=\"pln\">name<\/span><span class=\"pun\">=<\/span><span class=\"pln\">runoob<\/span><\/pre>\n<p>\u9664\u4e86\u663e\u5f0f\u5730\u76f4\u63a5\u8d4b\u503c\uff0c\u8fd8\u53ef\u4ee5\u7528\u8bed\u53e5\u7ed9\u53d8\u91cf\u8d4b\u503c\uff0c\u5982\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"kwd\">for<\/span><span class=\"pln\"> file <\/span><span class=\"kwd\">in<\/span> <span class=\"str\">`ls \/etc`<\/span>\r\n<span class=\"pun\">\u6216<\/span>\r\n<span class=\"kwd\">for<\/span><span class=\"pln\"> file <\/span><span class=\"kwd\">in<\/span><span class=\"pln\"> $<\/span><span class=\"pun\">(<\/span><span class=\"pln\">ls <\/span><span class=\"pun\">\/<\/span><span class=\"pln\">etc<\/span><span class=\"pun\">)<\/span><\/pre>\n<p>\u4ee5\u4e0a\u8bed\u53e5\u5c06 \/etc \u4e0b\u76ee\u5f55\u7684\u6587\u4ef6\u540d\u5faa\u73af\u51fa\u6765\u3002<\/p>\n<hr \/>\n<h3>\u4f7f\u7528\u53d8\u91cf<\/h3>\n<p>\u4f7f\u7528\u4e00\u4e2a\u5b9a\u4e49\u8fc7\u7684\u53d8\u91cf\uff0c\u53ea\u8981\u5728\u53d8\u91cf\u540d\u524d\u9762\u52a0\u7f8e\u5143\u7b26\u53f7\u5373\u53ef\uff0c\u5982\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">your_name<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"qinjx\"<\/span><span class=\"pln\">\r\necho $your_name\r\necho $<\/span><span class=\"pun\">{<\/span><span class=\"pln\">your_name<\/span><span class=\"pun\">}<\/span><\/pre>\n<p>\u53d8\u91cf\u540d\u5916\u9762\u7684\u82b1\u62ec\u53f7\u662f\u53ef\u9009\u7684\uff0c\u52a0\u4e0d\u52a0\u90fd\u884c\uff0c\u52a0\u82b1\u62ec\u53f7\u662f\u4e3a\u4e86\u5e2e\u52a9\u89e3\u91ca\u5668\u8bc6\u522b\u53d8\u91cf\u7684\u8fb9\u754c\uff0c\u6bd4\u5982\u4e0b\u9762\u8fd9\u79cd\u60c5\u51b5\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"kwd\">for<\/span><span class=\"pln\"> skill <\/span><span class=\"kwd\">in<\/span> <span class=\"typ\">Ada<\/span> <span class=\"typ\">Coffe<\/span> <span class=\"typ\">Action<\/span> <span class=\"typ\">Java<\/span><span class=\"pun\">;<\/span> <span class=\"kwd\">do<\/span><span class=\"pln\">\r\n    echo <\/span><span class=\"str\">\"I am good at ${skill}Script\"<\/span>\r\n<span class=\"kwd\">done<\/span><\/pre>\n<p>\u5982\u679c\u4e0d\u7ed9skill\u53d8\u91cf\u52a0\u82b1\u62ec\u53f7\uff0c\u5199\u6210echo &#8220;I am good at $skillScript&#8221;\uff0c\u89e3\u91ca\u5668\u5c31\u4f1a\u628a$skillScript\u5f53\u6210\u4e00\u4e2a\u53d8\u91cf\uff08\u5176\u503c\u4e3a\u7a7a\uff09\uff0c\u4ee3\u7801\u6267\u884c\u7ed3\u679c\u5c31\u4e0d\u662f\u6211\u4eec\u671f\u671b\u7684\u6837\u5b50\u4e86\u3002<\/p>\n<p>\u63a8\u8350\u7ed9\u6240\u6709\u53d8\u91cf\u52a0\u4e0a\u82b1\u62ec\u53f7\uff0c\u8fd9\u662f\u4e2a\u597d\u7684\u7f16\u7a0b\u4e60\u60ef\u3002<\/p>\n<p>\u5df2\u5b9a\u4e49\u7684\u53d8\u91cf\uff0c\u53ef\u4ee5\u88ab\u91cd\u65b0\u5b9a\u4e49\uff0c\u5982\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">your_name<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"tom\"<\/span><span class=\"pln\">\r\necho $your_name\r\nyour_name<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"alibaba\"<\/span><span class=\"pln\">\r\necho $your_name<\/span><\/pre>\n<p>\u8fd9\u6837\u5199\u662f\u5408\u6cd5\u7684\uff0c\u4f46\u6ce8\u610f\uff0c\u7b2c\u4e8c\u6b21\u8d4b\u503c\u7684\u65f6\u5019\u4e0d\u80fd\u5199$your_name=&#8221;alibaba&#8221;\uff0c\u4f7f\u7528\u53d8\u91cf\u7684\u65f6\u5019\u624d\u52a0\u7f8e\u5143\u7b26\uff08$\uff09\u3002<\/p>\n<h3>\u53ea\u8bfb\u53d8\u91cf<\/h3>\n<p>\u4f7f\u7528 readonly \u547d\u4ee4\u53ef\u4ee5\u5c06\u53d8\u91cf\u5b9a\u4e49\u4e3a\u53ea\u8bfb\u53d8\u91cf\uff0c\u53ea\u8bfb\u53d8\u91cf\u7684\u503c\u4e0d\u80fd\u88ab\u6539\u53d8\u3002<\/p>\n<p>\u4e0b\u9762\u7684\u4f8b\u5b50\u5c1d\u8bd5\u66f4\u6539\u53ea\u8bfb\u53d8\u91cf\uff0c\u7ed3\u679c\u62a5\u9519\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"com\">#!\/bin\/bash<\/span><span class=\"pln\">\r\nmyUrl<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"http:\/\/www.google.com\"<\/span>\r\n<span class=\"kwd\">readonly<\/span><span class=\"pln\"> myUrl\r\nmyUrl<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"http:\/\/www.runoob.com\"<\/span><\/pre>\n<p>\u8fd0\u884c\u811a\u672c\uff0c\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"str\">\/bin\/<\/span><span class=\"pln\">sh<\/span><span class=\"pun\">:<\/span><span class=\"pln\"> NAME<\/span><span class=\"pun\">:<\/span> <span class=\"typ\">This<\/span><span class=\"pln\"> variable <\/span><span class=\"kwd\">is<\/span><span class=\"pln\"> read only<\/span><span class=\"pun\">.<\/span><\/pre>\n<h3>\u5220\u9664\u53d8\u91cf<\/h3>\n<p>\u4f7f\u7528 unset \u547d\u4ee4\u53ef\u4ee5\u5220\u9664\u53d8\u91cf\u3002\u8bed\u6cd5\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">unset variable_name<\/span><\/pre>\n<p>\u53d8\u91cf\u88ab\u5220\u9664\u540e\u4e0d\u80fd\u518d\u6b21\u4f7f\u7528\u3002unset \u547d\u4ee4\u4e0d\u80fd\u5220\u9664\u53ea\u8bfb\u53d8\u91cf\u3002<\/p>\n<p><b>\u5b9e\u4f8b<\/b><\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"com\">#!\/bin\/sh<\/span><span class=\"pln\">\r\nmyUrl<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"http:\/\/www.runoob.com\"<\/span><span class=\"pln\">\r\nunset myUrl\r\necho $myUrl<\/span><\/pre>\n<p>\u4ee5\u4e0a\u5b9e\u4f8b\u6267\u884c\u5c06\u6ca1\u6709\u4efb\u4f55\u8f93\u51fa\u3002<\/p>\n<h3>\u53d8\u91cf\u7c7b\u578b<\/h3>\n<p>\u8fd0\u884cshell\u65f6\uff0c\u4f1a\u540c\u65f6\u5b58\u5728\u4e09\u79cd\u53d8\u91cf\uff1a<\/p>\n<ul>\n<li><strong>1) \u5c40\u90e8\u53d8\u91cf<\/strong>\u00a0\u5c40\u90e8\u53d8\u91cf\u5728\u811a\u672c\u6216\u547d\u4ee4\u4e2d\u5b9a\u4e49\uff0c\u4ec5\u5728\u5f53\u524dshell\u5b9e\u4f8b\u4e2d\u6709\u6548\uff0c\u5176\u4ed6shell\u542f\u52a8\u7684\u7a0b\u5e8f\u4e0d\u80fd\u8bbf\u95ee\u5c40\u90e8\u53d8\u91cf\u3002<\/li>\n<li><strong>2) \u73af\u5883\u53d8\u91cf<\/strong>\u00a0\u6240\u6709\u7684\u7a0b\u5e8f\uff0c\u5305\u62ecshell\u542f\u52a8\u7684\u7a0b\u5e8f\uff0c\u90fd\u80fd\u8bbf\u95ee\u73af\u5883\u53d8\u91cf\uff0c\u6709\u4e9b\u7a0b\u5e8f\u9700\u8981\u73af\u5883\u53d8\u91cf\u6765\u4fdd\u8bc1\u5176\u6b63\u5e38\u8fd0\u884c\u3002\u5fc5\u8981\u7684\u65f6\u5019shell\u811a\u672c\u4e5f\u53ef\u4ee5\u5b9a\u4e49\u73af\u5883\u53d8\u91cf\u3002<\/li>\n<li><strong>3) shell\u53d8\u91cf<\/strong>\u00a0shell\u53d8\u91cf\u662f\u7531shell\u7a0b\u5e8f\u8bbe\u7f6e\u7684\u7279\u6b8a\u53d8\u91cf\u3002shell\u53d8\u91cf\u4e2d\u6709\u4e00\u90e8\u5206\u662f\u73af\u5883\u53d8\u91cf\uff0c\u6709\u4e00\u90e8\u5206\u662f\u5c40\u90e8\u53d8\u91cf\uff0c\u8fd9\u4e9b\u53d8\u91cf\u4fdd\u8bc1\u4e86shell\u7684\u6b63\u5e38\u8fd0\u884c<\/li>\n<\/ul>\n<hr \/>\n<h2>Shell \u5b57\u7b26\u4e32<\/h2>\n<p>\u5b57\u7b26\u4e32\u662fshell\u7f16\u7a0b\u4e2d\u6700\u5e38\u7528\u6700\u6709\u7528\u7684\u6570\u636e\u7c7b\u578b\uff08\u9664\u4e86\u6570\u5b57\u548c\u5b57\u7b26\u4e32\uff0c\u4e5f\u6ca1\u5565\u5176\u5b83\u7c7b\u578b\u597d\u7528\u4e86\uff09\uff0c\u5b57\u7b26\u4e32\u53ef\u4ee5\u7528\u5355\u5f15\u53f7\uff0c\u4e5f\u53ef\u4ee5\u7528\u53cc\u5f15\u53f7\uff0c\u4e5f\u53ef\u4ee5\u4e0d\u7528\u5f15\u53f7\u3002\u5355\u53cc\u5f15\u53f7\u7684\u533a\u522b\u8ddfPHP\u7c7b\u4f3c\u3002<\/p>\n<h3>\u5355\u5f15\u53f7<\/h3>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">str<\/span><span class=\"pun\">=<\/span><span class=\"str\">'this is a string'<\/span><\/pre>\n<p>\u5355\u5f15\u53f7\u5b57\u7b26\u4e32\u7684\u9650\u5236\uff1a<\/p>\n<ul>\n<li>\u5355\u5f15\u53f7\u91cc\u7684\u4efb\u4f55\u5b57\u7b26\u90fd\u4f1a\u539f\u6837\u8f93\u51fa\uff0c\u5355\u5f15\u53f7\u5b57\u7b26\u4e32\u4e2d\u7684\u53d8\u91cf\u662f\u65e0\u6548\u7684\uff1b<\/li>\n<li>\u5355\u5f15\u53f7\u5b57\u4e32\u4e2d\u4e0d\u80fd\u51fa\u73b0\u5355\u72ec\u4e00\u4e2a\u7684\u5355\u5f15\u53f7\uff08\u5bf9\u5355\u5f15\u53f7\u4f7f\u7528\u8f6c\u4e49\u7b26\u540e\u4e5f\u4e0d\u884c\uff09\uff0c\u4f46\u53ef\u6210\u5bf9\u51fa\u73b0\uff0c\u4f5c\u4e3a\u5b57\u7b26\u4e32\u62fc\u63a5\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h3>\u53cc\u5f15\u53f7<\/h3>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">your_name<\/span><span class=\"pun\">=<\/span><span class=\"str\">'runoob'<\/span><span class=\"pln\">\r\nstr<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"Hello, I know you are \\\"$your_name\\\"! \\n\"<\/span><span class=\"pln\">\r\necho <\/span><span class=\"pun\">-<\/span><span class=\"pln\">e $str<\/span><\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"typ\">Hello<\/span><span class=\"pun\">,<\/span><span class=\"pln\"> I know you are <\/span><span class=\"str\">\"runoob\"<\/span><span class=\"pun\">!<\/span><\/pre>\n<p>\u53cc\u5f15\u53f7\u7684\u4f18\u70b9\uff1a<\/p>\n<ul>\n<li>\u53cc\u5f15\u53f7\u91cc\u53ef\u4ee5\u6709\u53d8\u91cf<\/li>\n<li>\u53cc\u5f15\u53f7\u91cc\u53ef\u4ee5\u51fa\u73b0\u8f6c\u4e49\u5b57\u7b26<\/li>\n<\/ul>\n<h3>\u62fc\u63a5\u5b57\u7b26\u4e32<\/h3>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">your_name<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"runoob\"<\/span>\r\n<span class=\"com\"># \u4f7f\u7528\u53cc\u5f15\u53f7\u62fc\u63a5<\/span><span class=\"pln\">\r\ngreeting<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"hello, \"<\/span><span class=\"pln\">$your_name<\/span><span class=\"str\">\" !\"<\/span><span class=\"pln\">\r\ngreeting_1<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"hello, ${your_name} !\"<\/span><span class=\"pln\">\r\necho $greeting  $greeting_1\r\n<\/span><span class=\"com\"># \u4f7f\u7528\u5355\u5f15\u53f7\u62fc\u63a5<\/span><span class=\"pln\">\r\ngreeting_2<\/span><span class=\"pun\">=<\/span><span class=\"str\">'hello, '<\/span><span class=\"pln\">$your_name<\/span><span class=\"str\">' !'<\/span><span class=\"pln\">\r\ngreeting_3<\/span><span class=\"pun\">=<\/span><span class=\"str\">'hello, ${your_name} !'<\/span><span class=\"pln\">\r\necho $greeting_2  $greeting_3<\/span><\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">hello<\/span><span class=\"pun\">,<\/span><span class=\"pln\"> runoob <\/span><span class=\"pun\">!<\/span><span class=\"pln\"> hello<\/span><span class=\"pun\">,<\/span><span class=\"pln\"> runoob <\/span><span class=\"pun\">!<\/span><span class=\"pln\">\r\nhello<\/span><span class=\"pun\">,<\/span><span class=\"pln\"> runoob <\/span><span class=\"pun\">!<\/span><span class=\"pln\"> hello<\/span><span class=\"pun\">,<\/span><span class=\"pln\"> $<\/span><span class=\"pun\">{<\/span><span class=\"pln\">your_name<\/span><span class=\"pun\">}<\/span> <span class=\"pun\">!<\/span><\/pre>\n<h3>\u83b7\u53d6\u5b57\u7b26\u4e32\u957f\u5ea6<\/h3>\n<pre class=\"prettyprint prettyprinted\"><span class=\"kwd\">string<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"abcd\"<\/span><span class=\"pln\">\r\necho $<\/span><span class=\"pun\">{#<\/span><span class=\"kwd\">string<\/span><span class=\"pun\">}<\/span> <span class=\"com\">#\u8f93\u51fa 4<\/span><\/pre>\n<h3>\u63d0\u53d6\u5b50\u5b57\u7b26\u4e32<\/h3>\n<p>\u4ee5\u4e0b\u5b9e\u4f8b\u4ece\u5b57\u7b26\u4e32\u7b2c\u00a0<strong>2<\/strong>\u00a0\u4e2a\u5b57\u7b26\u5f00\u59cb\u622a\u53d6\u00a0<strong>4<\/strong>\u00a0\u4e2a\u5b57\u7b26\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"kwd\">string<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"runoob is a great site\"<\/span><span class=\"pln\">\r\necho $<\/span><span class=\"pun\">{<\/span><span class=\"kwd\">string<\/span><span class=\"pun\">:<\/span><span class=\"lit\">1<\/span><span class=\"pun\">:<\/span><span class=\"lit\">4<\/span><span class=\"pun\">}<\/span> <span class=\"com\"># \u8f93\u51fa unoo<\/span><\/pre>\n<h3>\u67e5\u627e\u5b50\u5b57\u7b26\u4e32<\/h3>\n<p>\u67e5\u627e\u5b57\u7b26\u00a0<strong>i<\/strong>\u00a0\u6216\u00a0<strong>o<\/strong>\u00a0\u7684\u4f4d\u7f6e(\u54ea\u4e2a\u5b57\u6bcd\u5148\u51fa\u73b0\u5c31\u8ba1\u7b97\u54ea\u4e2a)\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"kwd\">string<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"runoob is a great site\"<\/span><span class=\"pln\">\r\necho <\/span><span class=\"str\">`expr index \"$string\" io`<\/span>  <span class=\"com\"># \u8f93\u51fa 4<\/span><\/pre>\n<p><strong>\u6ce8\u610f\uff1a<\/strong>\u00a0\u4ee5\u4e0a\u811a\u672c\u4e2d\u00a0<span class=\"marked\">`<\/span>\u00a0\u662f\u53cd\u5f15\u53f7\uff0c\u800c\u4e0d\u662f\u5355\u5f15\u53f7\u00a0<span class=\"marked\">&#8216;<\/span>\uff0c\u4e0d\u8981\u770b\u9519\u4e86\u54e6\u3002<\/p>\n<hr \/>\n<h2>Shell \u6570\u7ec4<\/h2>\n<p>bash\u652f\u6301\u4e00\u7ef4\u6570\u7ec4\uff08\u4e0d\u652f\u6301\u591a\u7ef4\u6570\u7ec4\uff09\uff0c\u5e76\u4e14\u6ca1\u6709\u9650\u5b9a\u6570\u7ec4\u7684\u5927\u5c0f\u3002<\/p>\n<p>\u7c7b\u4f3c\u4e8e C \u8bed\u8a00\uff0c\u6570\u7ec4\u5143\u7d20\u7684\u4e0b\u6807\u7531 0 \u5f00\u59cb\u7f16\u53f7\u3002\u83b7\u53d6\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u8981\u5229\u7528\u4e0b\u6807\uff0c\u4e0b\u6807\u53ef\u4ee5\u662f\u6574\u6570\u6216\u7b97\u672f\u8868\u8fbe\u5f0f\uff0c\u5176\u503c\u5e94\u5927\u4e8e\u6216\u7b49\u4e8e 0\u3002<\/p>\n<h3>\u5b9a\u4e49\u6570\u7ec4<\/h3>\n<p>\u5728 Shell \u4e2d\uff0c\u7528\u62ec\u53f7\u6765\u8868\u793a\u6570\u7ec4\uff0c\u6570\u7ec4\u5143\u7d20\u7528&#8221;\u7a7a\u683c&#8221;\u7b26\u53f7\u5206\u5272\u5f00\u3002\u5b9a\u4e49\u6570\u7ec4\u7684\u4e00\u822c\u5f62\u5f0f\u4e3a\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pun\">\u6570\u7ec4\u540d=(\u503c<\/span><span class=\"lit\">1<\/span> <span class=\"pun\">\u503c<\/span><span class=\"lit\">2<\/span> <span class=\"pun\">...<\/span> <span class=\"pun\">\u503c<\/span><span class=\"pln\">n<\/span><span class=\"pun\">)<\/span><\/pre>\n<p>\u4f8b\u5982\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">array_name<\/span><span class=\"pun\">=(<\/span><span class=\"pln\">value0 value1 value2 value3<\/span><span class=\"pun\">)<\/span><\/pre>\n<p>\u6216\u8005<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">array_name<\/span><span class=\"pun\">=(<\/span><span class=\"pln\">\r\nvalue0\r\nvalue1\r\nvalue2\r\nvalue3\r\n<\/span><span class=\"pun\">)<\/span><\/pre>\n<p>\u8fd8\u53ef\u4ee5\u5355\u72ec\u5b9a\u4e49\u6570\u7ec4\u7684\u5404\u4e2a\u5206\u91cf\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">array_name<\/span><span class=\"pun\">[<\/span><span class=\"lit\">0<\/span><span class=\"pun\">]=<\/span><span class=\"pln\">value0\r\narray_name<\/span><span class=\"pun\">[<\/span><span class=\"lit\">1<\/span><span class=\"pun\">]=<\/span><span class=\"pln\">value1\r\narray_name<\/span><span class=\"pun\">[<\/span><span class=\"pln\">n<\/span><span class=\"pun\">]=<\/span><span class=\"pln\">valuen<\/span><\/pre>\n<p>\u53ef\u4ee5\u4e0d\u4f7f\u7528\u8fde\u7eed\u7684\u4e0b\u6807\uff0c\u800c\u4e14\u4e0b\u6807\u7684\u8303\u56f4\u6ca1\u6709\u9650\u5236\u3002<\/p>\n<h3>\u8bfb\u53d6\u6570\u7ec4<\/h3>\n<p>\u8bfb\u53d6\u6570\u7ec4\u5143\u7d20\u503c\u7684\u4e00\u822c\u683c\u5f0f\u662f\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">$<\/span><span class=\"pun\">{\u6570\u7ec4\u540d[\u4e0b\u6807]}<\/span><\/pre>\n<p>\u4f8b\u5982\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">valuen<\/span><span class=\"pun\">=<\/span><span class=\"pln\">$<\/span><span class=\"pun\">{<\/span><span class=\"pln\">array_name<\/span><span class=\"pun\">[<\/span><span class=\"pln\">n<\/span><span class=\"pun\">]}<\/span><\/pre>\n<p>\u4f7f\u7528\u00a0<span class=\"marked\">@<\/span>\u00a0\u7b26\u53f7\u53ef\u4ee5\u83b7\u53d6\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">echo $<\/span><span class=\"pun\">{<\/span><span class=\"pln\">array_name<\/span><span class=\"pun\">[@]}<\/span><\/pre>\n<h3>\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6<\/h3>\n<p>\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\u7684\u65b9\u6cd5\u4e0e\u83b7\u53d6\u5b57\u7b26\u4e32\u957f\u5ea6\u7684\u65b9\u6cd5\u76f8\u540c\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"com\"># \u53d6\u5f97\u6570\u7ec4\u5143\u7d20\u7684\u4e2a\u6570<\/span><span class=\"pln\">\r\nlength<\/span><span class=\"pun\">=<\/span><span class=\"pln\">$<\/span><span class=\"pun\">{#<\/span><span class=\"pln\">array_name<\/span><span class=\"pun\">[@]}<\/span>\r\n<span class=\"com\"># \u6216\u8005<\/span><span class=\"pln\">\r\nlength<\/span><span class=\"pun\">=<\/span><span class=\"pln\">$<\/span><span class=\"pun\">{#<\/span><span class=\"pln\">array_name<\/span><span class=\"pun\">[*]}<\/span>\r\n<span class=\"com\"># \u53d6\u5f97\u6570\u7ec4\u5355\u4e2a\u5143\u7d20\u7684\u957f\u5ea6<\/span><span class=\"pln\">\r\nlengthn<\/span><span class=\"pun\">=<\/span><span class=\"pln\">$<\/span><span class=\"pun\">{#<\/span><span class=\"pln\">array_name<\/span><span class=\"pun\">[<\/span><span class=\"pln\">n<\/span><span class=\"pun\">]}<\/span><\/pre>\n<hr \/>\n<h2>Shell \u6ce8\u91ca<\/h2>\n<p>\u4ee5\u00a0<span class=\"marked\">#<\/span>\u00a0\u5f00\u5934\u7684\u884c\u5c31\u662f\u6ce8\u91ca\uff0c\u4f1a\u88ab\u89e3\u91ca\u5668\u5ffd\u7565\u3002<\/p>\n<p>\u901a\u8fc7\u6bcf\u4e00\u884c\u52a0\u4e00\u4e2a\u00a0<strong>#<\/strong>\u00a0\u53f7\u8bbe\u7f6e\u591a\u884c\u6ce8\u91ca\uff0c\u50cf\u8fd9\u6837\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"com\">#--------------------------------------------<\/span>\r\n<span class=\"com\"># \u8fd9\u662f\u4e00\u4e2a\u6ce8\u91ca<\/span>\r\n<span class=\"com\"># author\uff1a\u83dc\u9e1f\u6559\u7a0b<\/span>\r\n<span class=\"com\"># site\uff1awww.runoob.com<\/span>\r\n<span class=\"com\"># slogan\uff1a\u5b66\u7684\u4e0d\u4ec5\u662f\u6280\u672f\uff0c\u66f4\u662f\u68a6\u60f3\uff01<\/span>\r\n<span class=\"com\">#--------------------------------------------<\/span>\r\n<span class=\"com\">##### \u7528\u6237\u914d\u7f6e\u533a \u5f00\u59cb #####<\/span>\r\n<span class=\"com\">#<\/span>\r\n<span class=\"com\">#<\/span>\r\n<span class=\"com\"># \u8fd9\u91cc\u53ef\u4ee5\u6dfb\u52a0\u811a\u672c\u63cf\u8ff0\u4fe1\u606f<\/span>\r\n<span class=\"com\"># <\/span>\r\n<span class=\"com\">#<\/span>\r\n<span class=\"com\">##### \u7528\u6237\u914d\u7f6e\u533a \u7ed3\u675f  #####<\/span><\/pre>\n<p>\u5982\u679c\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\uff0c\u9047\u5230\u5927\u6bb5\u7684\u4ee3\u7801\u9700\u8981\u4e34\u65f6\u6ce8\u91ca\u8d77\u6765\uff0c\u8fc7\u4e00\u4f1a\u513f\u53c8\u53d6\u6d88\u6ce8\u91ca\uff0c\u600e\u4e48\u529e\u5462\uff1f<\/p>\n<p>\u6bcf\u4e00\u884c\u52a0\u4e2a#\u7b26\u53f7\u592a\u8d39\u529b\u4e86\uff0c\u53ef\u4ee5\u628a\u8fd9\u4e00\u6bb5\u8981\u6ce8\u91ca\u7684\u4ee3\u7801\u7528\u4e00\u5bf9\u82b1\u62ec\u53f7\u62ec\u8d77\u6765\uff0c\u5b9a\u4e49\u6210\u4e00\u4e2a\u51fd\u6570\uff0c\u6ca1\u6709\u5730\u65b9\u8c03\u7528\u8fd9\u4e2a\u51fd\u6570\uff0c\u8fd9\u5757\u4ee3\u7801\u5c31\u4e0d\u4f1a\u6267\u884c\uff0c\u8fbe\u5230\u4e86\u548c\u6ce8\u91ca\u4e00\u6837\u7684\u6548\u679c\u3002<\/p>\n<h3>\u591a\u884c\u6ce8\u91ca<\/h3>\n<p>\u591a\u884c\u6ce8\u91ca\u8fd8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u683c\u5f0f\uff1a<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pun\">:&lt;&lt;<\/span><span class=\"pln\">EOF\r\n<\/span><span class=\"pun\">\u6ce8\u91ca\u5185\u5bb9...<\/span>\r\n<span class=\"pun\">\u6ce8\u91ca\u5185\u5bb9...<\/span>\r\n<span class=\"pun\">\u6ce8\u91ca\u5185\u5bb9...<\/span><span class=\"pln\">\r\nEOF<\/span><\/pre>\n<p>EOF \u4e5f\u53ef\u4ee5\u4f7f\u7528\u5176\u4ed6\u7b26\u53f7:<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pun\">:&lt;&lt;<\/span><span class=\"str\">'\r\n\u6ce8\u91ca\u5185\u5bb9...\r\n\u6ce8\u91ca\u5185\u5bb9...\r\n\u6ce8\u91ca\u5185\u5bb9...\r\n'<\/span>\r\n\r\n<span class=\"pun\">:&lt;&lt;!<\/span>\r\n<span class=\"pun\">\u6ce8\u91ca\u5185\u5bb9...<\/span>\r\n<span class=\"pun\">\u6ce8\u91ca\u5185\u5bb9...<\/span>\r\n<span class=\"pun\">\u6ce8\u91ca\u5185\u5bb9...<\/span>\r\n<span class=\"pun\">!<\/span><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Shell \u53d8\u91cf \u5b9a\u4e49\u53d8\u91cf\u65f6\uff0c\u53d8\u91cf\u540d\u4e0d\u52a0\u7f8e\u5143\u7b26\u53f7\uff08$\uff0cPHP\u8bed\u8a00\u4e2d\u53d8\u91cf\u9700\u8981\uff09\uff0c\u5982\uff1a your_name=&#8221;ru &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/b.yesiyu.top\/?p=116\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201cShell \u53d8\u91cf\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-116","post","type-post","status-publish","format-standard","hentry","category-liunx-"],"_links":{"self":[{"href":"https:\/\/b.yesiyu.top\/index.php?rest_route=\/wp\/v2\/posts\/116","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/b.yesiyu.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/b.yesiyu.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/b.yesiyu.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/b.yesiyu.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=116"}],"version-history":[{"count":1,"href":"https:\/\/b.yesiyu.top\/index.php?rest_route=\/wp\/v2\/posts\/116\/revisions"}],"predecessor-version":[{"id":117,"href":"https:\/\/b.yesiyu.top\/index.php?rest_route=\/wp\/v2\/posts\/116\/revisions\/117"}],"wp:attachment":[{"href":"https:\/\/b.yesiyu.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=116"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/b.yesiyu.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=116"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/b.yesiyu.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=116"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}