{"id":686,"date":"2022-09-11T04:53:44","date_gmt":"2023-08-30T20:18:05","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/shell%e8%84%9a%e6%9c%ac%e4%b8%ad%e7%9a%84%e6%95%b0%e7%bb%84\/"},"modified":"2025-08-03T03:00:01","modified_gmt":"2025-08-02T19:00:01","slug":"shell%e8%84%9a%e6%9c%ac%e4%b8%ad%e7%9a%84%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/shell%e8%84%9a%e6%9c%ac%e4%b8%ad%e7%9a%84%e6%95%b0%e7%bb%84\/","title":{"rendered":"\u638c\u63e1Shell\u811a\u672c\u6570\u7ec4\uff1a\u4ece\u57fa\u7840\u5230\u9ad8\u7ea7\u5e94\u7528"},"content":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728Shell\u811a\u672c\u4e2d\u4f7f\u7528\u6570\u7ec4\u5c06\u5e2e\u52a9\u60a8\u4ee5\u66f4\u9ad8\u6548\u7684\u65b9\u5f0f\u5904\u7406\u66f4\u5927\u7684\u6570\u636e\u96c6\u3002\u4f46\u662f\u4ec0\u4e48\u662f\u6570\u7ec4\uff0c\u5982\u4f55\u521b\u5efa\u6570\u7ec4\u5462\uff1f\u8ba9\u6211\u4eec\u6765\u4e86\u89e3\u4e00\u4e0b\u5427\uff01<\/p>\n<h2>\u6570\u7ec4\u662f\u4ec0\u4e48\uff1f<\/h2>\n<p>\u5982\u679c\u4f60\u5df2\u7ecf\u5bf9\u4efb\u4f55\u7f16\u7a0b\u8bed\u8a00\u6709\u57fa\u672c\u7684\u4e86\u89e3\uff0c\u90a3\u4e48\u4f60\u5c31\u77e5\u9053\u6570\u7ec4\u662f\u4ec0\u4e48\u3002\u4f46\u662f\u5bf9\u4e8e\u521d\u5b66\u8005\u6765\u8bf4\uff0c\u8ba9\u6211\u4eec\u6765\u8bb2\u89e3\u4e00\u4e0b\u6570\u7ec4\u7684\u57fa\u7840\u77e5\u8bc6\uff0c\u5e76\u5b66\u4e60\u5982\u4f55\u4f7f\u7528\u5b83\u4eec\u3002<\/p>\n<p>\u53d8\u91cf\u5b58\u50a8\u5355\u4e00\u6570\u636e\u5143\u7d20\u3002\u800c\u6570\u7ec4\u5219\u53ef\u4ee5\u5b58\u50a8\u51e0\u4e4e\u65e0\u9650\u6570\u91cf\u7684\u6570\u636e\u5143\u7d20\u3002\u5f53\u5904\u7406\u5927\u91cf\u6570\u636e\u65f6\uff0c\u53d8\u91cf\u53ef\u80fd\u6548\u7387\u8f83\u4f4e\uff0c\u56e0\u6b64\u4f7f\u7528\u6570\u7ec4\u975e\u5e38\u6709\u5e2e\u52a9\u3002<\/p>\n<p>\u6211\u4eec\u6765\u5b66\u4e60\u5982\u4f55\u5728 shell \u811a\u672c\u4e2d\u521b\u5efa\u6570\u7ec4\u3002<\/p>\n<h2>\u5728Shell\u811a\u672c\u4e2d\u521b\u5efa\u6570\u7ec4<\/h2>\n<p>\u5728shell\u811a\u672c\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4e24\u79cd\u7c7b\u578b\u7684\u6570\u7ec4\u6765\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n<ul class=\"post-ul\">\n<li>\u7d22\u5f15\u6570\u7ec4 &#8211; \u4f7f\u7528\u4ece0\u5f00\u59cb\u7684\u7d22\u5f15\u5b58\u50a8\u5143\u7d20<\/li>\n<li>\u5173\u8054\u6570\u7ec4 &#8211; \u4ee5\u952e\u503c\u5bf9\u7684\u5f62\u5f0f\u5b58\u50a8\u5143\u7d20<\/li>\n<\/ul>\n<p>\u521b\u5efa\u7684\u9ed8\u8ba4\u6570\u7ec4\u662f\u4e00\u4e2a\u7d22\u5f15\u6570\u7ec4\u3002\u5982\u679c\u60a8\u6307\u5b9a\u7d22\u5f15\u540d\u79f0\uff0c\u5b83\u5c06\u6210\u4e3a\u4e00\u4e2a\u5173\u8054\u6570\u7ec4\uff0c\u5e76\u4e14\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u540d\u79f0\u800c\u4e0d\u662f\u6570\u5b57\u8bbf\u95ee\u5143\u7d20\u3002<\/p>\n<p>\u58f0\u660e\u6570\u7ec4\uff1a<\/p>\n<pre class=\"post-pre\"><code>root@ubuntu:~<span class=\"token comment\"># declare -A assoc_array<\/span>\r\nroot@ubuntu:~<span class=\"token comment\"># assoc_array[key]=value<\/span>\r\n\u6216\u8005\r\nroot@ubuntu:~<span class=\"token comment\"># declare -a indexed_array<\/span>\r\nroot@ubuntu:~<span class=\"token comment\"># indexed_array[0]=value<\/span>\r\n<\/code><\/pre>\n<p>\u6ce8\u610f\u5927\u5199\u548c\u5c0f\u5199\u5b57\u6bcda\u3002\u5927\u5199A\u7528\u4e8e\u58f0\u660e\u5173\u8054\u6570\u7ec4\uff0c\u800c\u5c0f\u5199a\u7528\u4e8e\u58f0\u660e\u7d22\u5f15\u6570\u7ec4\u3002<\/p>\n<p>\u58f0\u660e\u5173\u952e\u5b57\u7528\u4e8e\u663e\u5f0f\u58f0\u660e\u6570\u7ec4\uff0c\u4f46\u4f60\u5b9e\u9645\u4e0a\u4e0d\u9700\u8981\u4f7f\u7528\u5b83\u4eec\u3002\u5f53\u4f60\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\u65f6\uff0c\u4f60\u53ef\u4ee5\u6839\u636e\u6240\u9700\u7684\u6570\u7ec4\u7c7b\u578b\u7b80\u5355\u5730\u521d\u59cb\u5316\u503c\uff0c\u800c\u65e0\u9700\u660e\u786e\u58f0\u660e\u6570\u7ec4\u3002<\/p>\n<h2>\u5728Shell\u811a\u672c\u4e2d\u4f7f\u7528\u6570\u7ec4\u8fdb\u884c\u64cd\u4f5c<\/h2>\n<p>\u65e2\u7136\u4f60\u5df2\u7ecf\u77e5\u9053\u5982\u4f55\u521b\u5efa\u6570\u7ec4\uff0c\u90a3\u6211\u4eec\u5c31\u6765\u5b66\u4e60\u5982\u4f55\u5904\u7406\u6570\u7ec4\u5427\u3002\u7531\u4e8e\u6570\u7ec4\u662f\u4e00\u7ec4\u6570\u636e\u5143\u7d20\u7684\u96c6\u5408\uff0c\u6211\u4eec\u53ef\u4ee5\u540c\u65f6\u4f7f\u7528\u5faa\u73af\u548c\u6570\u7ec4\u6765\u63d0\u53d6\u6240\u9700\u7684\u6570\u636e\u70b9\u3002<\/p>\n<h3>1. \u5355\u72ec\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20<\/h3>\n<p>\u65e2\u7136\u6211\u4eec\u77e5\u9053\u6bcf\u4e2a\u6570\u636e\u70b9\u90fd\u88ab\u5355\u72ec\u7d22\u5f15\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u6570\u7ec4\u7d22\u5f15\u6765\u8bbf\u95ee\u6240\u6709\u6570\u7ec4\u5143\u7d20\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre class=\"post-pre\"><code>assoc_array[\u5143\u7d201]=\"Hello World\"\r\necho ${assoc_array[\u5143\u7d201]}\r\n<\/code><\/pre>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65647f06a4b2f92e6c72d995\/18-0.png\" class='post-images' alt=\"Shell\u811a\u672c\u4e2d\u7684\u5173\u8054\u6570\u7ec4\" title=\"\">\n                        <\/div>\n<p>\u540c\u6837\u5730\uff0c\u8ba9\u6211\u4eec\u8bbf\u95ee\u4e00\u4e9b\u7d22\u5f15\u6570\u7ec4\u7684\u5143\u7d20\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7528\u7a7a\u683c\u5206\u9694\u6765\u6307\u5b9a\u7d22\u5f15\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\uff0c\u56e0\u4e3a\u6bcf\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u662f\u81ea\u52a8\u751f\u6210\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code>index_array=(1 2 3 4 5 6)\r\necho ${index_array[0]}\r\n<\/code><\/pre>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65647f06a4b2f92e6c72d995\/21-0.png\" class='post-images' alt=\"Shell\u811a\u672c\u4e2d\u7684\u7d22\u5f15\u6570\u7ec4\" title=\"\">\n                        <\/div>\n<p>\u4ece\u4f60\u53ef\u4ee5\u770b\u5230\u7684\uff0c\u7b2c\u4e00\u4e2a\u5143\u7d20\u662f\u6839\u636e\u7d22\u5f150\u81ea\u52a8\u6253\u5370\u7684\u3002<\/p>\n<h3>2. \u4f9d\u6b21\u8bfb\u53d6\u6570\u7ec4\u5143\u7d20<\/h3>\n<p>\u5982\u679c\u4f60\u5df2\u7ecf\u4e86\u89e3for\u5faa\u73af\uff0c\u8fd9\u5c06\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4efb\u52a1\u3002\u5982\u679c\u4f60\u4e0d\u4e86\u89e3\uff0c\u6211\u4eec\u5c06\u5728\u4ee5\u540e\u7684\u6559\u7a0b\u4e2d\u8fdb\u884c\u8bb2\u89e3\u3002\u6211\u4eec\u5c06\u4f7f\u7528while\u6216for\u5faa\u73af\u6765\u904d\u5386\u6570\u7ec4\u5143\u7d20\u7684\u811a\u672c\u3002\u590d\u5236\u4e0b\u9762\u7684\u811a\u672c\u5e76\u5c06\u5176\u4fdd\u5b58\u4e3a<\u6587\u4ef6\u540d>.sh\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token shebang important\">#!\/bin\/bash<\/span>\r\n<span class=\"token assign-left variable\">index_array<\/span><span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span> <span class=\"token number\">2<\/span> <span class=\"token number\">3<\/span> <span class=\"token number\">4<\/span> <span class=\"token number\">5<\/span> <span class=\"token number\">6<\/span> <span class=\"token number\">7<\/span> <span class=\"token number\">8<\/span> <span class=\"token number\">9<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token keyword\">for<\/span> <span class=\"token for-or-select variable\">i<\/span> <span class=\"token keyword\">in<\/span> <span class=\"token variable\">${index_array<span class=\"token punctuation\">[<\/span>@<span class=\"token punctuation\">]<\/span>}<\/span>\r\n<span class=\"token keyword\">do<\/span>\r\n        <span class=\"token builtin class-name\">echo<\/span> <span class=\"token variable\">$i<\/span>\r\n<span class=\"token keyword\">done<\/span>\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0a\u7684\u811a\u672c\u5c06\u8f93\u51fa\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65647f06a4b2f92e6c72d995\/27-0.png\" class='post-images' alt=\"Shell\u811a\u672c\u4e2d\u904d\u5386\u6570\u7ec4\" title=\"\">\n                        <\/div>\n<p>\u73b0\u5728\u4f60\u53ef\u80fd\u5df2\u7ecf\u6ce8\u610f\u5230\u4e86index_array[@]\uff0c\u5982\u679c\u4f60\u60f3\u77e5\u9053@\u7b26\u53f7\u7684\u4f5c\u7528\uff0c\u6211\u4eec\u5c06\u7acb\u5373\u89e3\u91ca\u4e00\u4e0b\u3002<\/p>\n<h2>\u5728Shell\u811a\u672c\u4e2d\u4e3a\u6570\u7ec4\u63d0\u4f9b\u5185\u7f6e\u64cd\u4f5c\u529f\u80fd<\/h2>\n<p>\u65e2\u7136\u4f60\u5df2\u7ecf\u5b66\u4f1a\u4e86\u5982\u4f55\u9010\u4e2a\u8bbf\u95ee\u5143\u7d20\u5e76\u4f7f\u7528for\u5faa\u73af\uff0c\u90a3\u4e48\u6211\u4eec\u73b0\u5728\u6765\u5b66\u4e60\u9ed8\u8ba4\u53ef\u7528\u7684\u6570\u7ec4\u64cd\u4f5c\u3002<\/p>\n<h3>1. \u8bbf\u95ee\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20<\/h3>\n<p>\u6211\u4eec\u5b66\u4e60\u4e86\u901a\u8fc7\u63d0\u4f9b\u6570\u7ec4\u7684\u7d22\u5f15\u6216\u952e\u6765\u8bbf\u95ee\u5143\u7d20\u3002\u4f46\u662f\u82e5\u6211\u4eec\u60f3\u8981\u540c\u65f6\u6253\u5370\u6216\u5904\u7406\u6240\u6709\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u53e6\u4e00\u4e2a\u64cd\u4f5c\u7b26\uff0c\u5373[@]\u7b26\u53f7\u3002<\/p>\n<p>\u6b63\u5982\u4f60\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\u6ce8\u610f\u5230\u7684\u90a3\u6837\uff0c\u5f53\u6211\u60f3\u8981\u4f7f\u7528for\u5faa\u73af\u904d\u5386\u6240\u6709\u6570\u7ec4\u5143\u7d20\u65f6\uff0c\u6211\u4f7f\u7528\u4e86\u8fd9\u4e2a\u7b26\u53f7\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token builtin class-name\">echo<\/span> <span class=\"token variable\">${assoc_array<span class=\"token punctuation\">[<\/span>@<span class=\"token punctuation\">]<\/span>}<\/span>\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0a\u4ee3\u7801\u5c06\u6253\u5370\u51fa\u50a8\u5b58\u5728\u5173\u8054\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u3002<\/p>\n<h3>2. \u8ba1\u7b97\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf<\/h3>\n<p>\u7c7b\u4f3c\u4e8e\u4e0a\u65b9\u7684@\u7b26\u53f7\uff0c\u6211\u4eec\u6709#\u7b26\u53f7\uff0c\u53ef\u4ee5\u6dfb\u52a0\u5728\u6570\u7ec4\u540d\u79f0\u524d\u9762\uff0c\u4ee5\u63d0\u4f9b\u6570\u7ec4\u4e2d\u5b58\u50a8\u7684\u5143\u7d20\u6570\u91cf\u3002\u8ba9\u6211\u4eec\u6765\u770b\u770b\u5b83\u662f\u5982\u4f55\u5de5\u4f5c\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token builtin class-name\">echo<\/span> <span class=\"token variable\">${<span class=\"token operator\">#<\/span>index_array<span class=\"token punctuation\">[<\/span>@<span class=\"token punctuation\">]<\/span>}<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u60a8\u60f3\u8ba1\u7b97\u7279\u5b9a\u5143\u7d20\u4f7f\u7528\u7684\u5b57\u7b26\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u7528\u7d22\u5f15\u66ff\u6362@\u7b26\u53f7\u5373\u53ef\u3002<\/p>\n<h3>\u5220\u9664\u5355\u4e2a\u6570\u7ec4\u5143\u7d20<\/h3>\n<p>\u6211\u4eec\u77e5\u9053\u5982\u4f55\u6dfb\u52a0\u6570\u7ec4\u5143\u7d20\u5e76\u6253\u5370\u5b83\u4eec\u3002\u8ba9\u6211\u4eec\u5b66\u4e60\u5982\u4f55\u5220\u9664\u7279\u5b9a\u5143\u7d20\u3002\u4e3a\u6b64\uff0c\u6211\u4eec\u5c06\u4f7f\u7528unset\u5173\u952e\u5b57\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token builtin class-name\">unset<\/span> index_array<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<p>\u66ff\u6362\u4e0a\u8ff0\u4ee3\u7801\u793a\u4f8b\u4e2d\u7684\u6570\u7ec4\u540d\u79f0\u548c\u7d22\u5f15ID\uff0c\u5c31\u53ef\u4ee5\u5220\u9664\u4f60\u60f3\u8981\u7684\u6570\u7ec4\u5143\u7d20\u3002\u5f88\u7b80\u5355\u5427\uff1f<\/p>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u7528\u5408\u9002\u7684\u4eba\u5199\u811a\u672c\uff0cShell\u811a\u672c\u975e\u5e38\u5e7f\u6cdb\uff0c\u53ef\u4ee5\u66ff\u4ee3\u7ec8\u7aef\u4e0a\u7684\u4efb\u4f55\u529f\u80fd\u3002Shell\u811a\u672c\u4e2d\u6570\u7ec4\u7684\u4e00\u4e9b\u989d\u5916\u529f\u80fd\u8fd8\u5305\u62ec\u80fd\u591f\u4e0e\u6b63\u5219\u8868\u8fbe\u5f0f\u4e00\u8d77\u4f7f\u7528\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4e0d\u540c\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u6765\u64cd\u4f5cShell\u811a\u672c\u4e2d\u7684\u6570\u7ec4\u5143\u7d20\u3002<\/p>\n<p>\u76ee\u524d\uff0c\u6211\u4eec\u5e0c\u671b\u60a8\u80fd\u591f\u5bf9\u521b\u5efa\u548c\u4f7f\u7528\u6570\u7ec4\u6709\u4e00\u4e2a\u5f88\u597d\u7684\u7406\u89e3\uff0c\u5e76\u80fd\u591f\u5728\u60a8\u7684\u811a\u672c\u4e2d\u4f7f\u7528\u6570\u7ec4\u3002\u8bf7\u5728\u4e0b\u65b9\u53d1\u8868\u8bc4\u8bba\uff0c\u8ba9\u6211\u4eec\u77e5\u9053\u60a8\u7684\u60f3\u6cd5\uff0c\u4ee5\u53ca\u5982\u679c\u60a8\u5bf9\u8fd9\u4e2a\u8bdd\u9898\u6709\u4efb\u4f55\u95ee\u9898\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728Shell\u811a\u672c\u4e2d\u4f7f\u7528\u6570\u7ec4\u5c06\u5e2e\u52a9\u60a8\u4ee5\u66f4\u9ad8\u6548\u7684\u65b9\u5f0f\u5904\u7406\u66f4\u5927\u7684\u6570\u636e\u96c6\u3002\u4f46\u662f\u4ec0\u4e48\u662f\u6570\u7ec4\uff0c\u5982\u4f55\u521b\u5efa\u6570\u7ec4\u5462\uff1f\u8ba9\u6211 [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1387,605,251],"class_list":["post-686","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-linux","tag-shell","tag-251"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u638c\u63e1Shell\u811a\u672c\u6570\u7ec4\uff1a\u4ece\u57fa\u7840\u5230\u9ad8\u7ea7\u5e94\u7528 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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