{"id":830,"date":"2025-03-20T19:23:40","date_gmt":"2025-03-20T11:23:40","guid":{"rendered":"https:\/\/fanaticboy.com\/?p=830"},"modified":"2025-03-20T19:28:00","modified_gmt":"2025-03-20T11:28:00","slug":"shell%e7%bc%96%e7%a8%8b%e4%b8%be%e4%be%8b","status":"publish","type":"post","link":"https:\/\/fanaticboy.com\/?p=830","title":{"rendered":"shell\u7f16\u7a0b\u4e3e\u4f8b"},"content":{"rendered":"\n<p>\u5f15\u8a00\uff1a\u4e0a\u7bc7\u6587\u7ae0\u7b80\u5355\u7684\u8bf4\u4e86\u4e00\u4e0b\u6761\u4ef6\u5224\u65ad\u8bed\u53e5\u7684\u5e94\u7528\uff0c\u4e5f\u5c31\u662f\u57fa\u672c\u7684\u8bed\u6cd5\u3002\u63a5\u4e0b\u6765\u8bf4\u4e00\u4e0b\u8fdb\u9636\u7248\u7684\u7528\u6cd5\u548c\u4e00\u4e9b\u4f8b\u5b50\u3002\u5728\u8bf4\u4f8b\u5b50\u4e4b\u524d\u5148\u6269\u5145\u4e00\u4e0b\u77e5\u8bc6\uff0c\u5bf9\u54b1\u4eec\u7406\u89e3\u6709\u5f88\u5927\u7684\u5e2e\u52a9\uff0c\u90a3\u5c31\u5f00\u59cb\u5427<\/p>\n\n\n\n<p><strong>shell\u91cc\u9762\u7684\u53cc\u5f15\u53f7\uff0c&nbsp;\u5355\u5f15\u53f7\uff0c\u53cd\u5f15\u53f7\u4e4b\u95f4\u7684\u533a\u522b\uff1a<\/strong><\/p>\n\n\n\n<p>\u5355\u5f15\u53f7\uff1a\u5c31\u662f\u91cc\u9762\u6240\u6709\u7684\u5185\u5bb9\u90fd\u662f\u5b57\u7b26\u4e32\uff0c\u662f\u4ec0\u4e48\u5c31\u8f93\u51fa\u4ec0\u4e48\uff0c\u8f6c\u4e49\u5b57\u7b26\u65f6\u539f\u6837\u8f93\u51fa<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/wlRd0vFnXxaPAlYwOIiblNRpicBX4zb9icdJboPW2xDQdFdjZOU6jQADPLFZgksEImHicZHhyxPW8eT8TsfQ904vqA\/640?wx_fmt=png&amp;wxfrom=13&amp;tp=wxpic\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u53cc\u5f15\u53f7\uff1a\u91cc\u9762\u7684\u5185\u5bb9\u5982\u679c\u6709\u53d8\u91cf\uff0c\u4f1a\u5148\u89e3\u6790\u53d8\u91cf\u3002\u6709\u8f6c\u4e49\u5b57\u7b26\uff0c\u89e3\u6790\u8f6c\u4e49\u5b57\u7b26<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/wlRd0vFnXxaPAlYwOIiblNRpicBX4zb9icdV4gDSpLibjJnvvdyH5wSPLczK7mRZzO1fFKXtXdxvCttnWzSWO5zJ4w\/640?wx_fmt=png&amp;wxfrom=13&amp;tp=wxpic\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u53cd\u5f15\u53f7\uff1a\u5c06\u91cc\u9762\u7684\u7ed3\u679c\u653e\u5165\u53d8\u91cf\u4e2d\uff0c\u4e0b\u9762\u662f\u4e2a\u5c0f\u6817\u5b50<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#!\/bin\/bash\n#\u00a0\u6b64\u8bed\u53e5\u7684\u610f\u601d\u662f\u67e5\u770b\u5f53\u524d\u76ee\u5f55\u5185\u5bb9\uff0c\u627e\u5230\u6700\u540e\u4e00\u4e2a\u540d\u5b57\u8d4b\u503c\u7ed9x\nx\u00a0=\u00a0`ls | tail -1`\necho\u00a0$x<\/code><\/pre>\n\n\n\n<p>\u5c06\u4e0a\u9762shell\u6267\u884c\uff0c\u8f93\u51fa\u4e00\u4e0b\u4f1a\u53d1\u73b0\u8fd9\u6837\u7684\u7ed3\u679c<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/wlRd0vFnXxaPAlYwOIiblNRpicBX4zb9icdvke79MibnuLjZEy69HsibGQLYBroNhatlsaDIlA4Z97gBAsmicibgLIduQ\/640?wx_fmt=png&amp;tp=wxpic&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p><strong>awk\u7684\u4f7f\u7528<\/strong><\/p>\n\n\n\n<p>\u9996\u5148\u4ecb\u7ecd\u4e00\u4e0bawk\u662f\u5e72\u4ec0\u4e48\u7684\uff0c\u8fd9\u662f\u4e00\u4e2a\u62a5\u544a\u751f\u6210\u5668\u3002\u662f\u4e00\u79cd\u7f16\u7a0b\u8bed\u8a00\uff0c\u7528\u6765\u683c\u5f0f\u5316\u6570\u636e\uff0c\u628a\u5185\u5bb9\u6574\u7406\u6210\u6211\u4eec\u60f3\u8981\u7684\u6837\u5b50\uff0c\u53ef\u4ee5\u7406\u89e3\u6210\u53d8\u6210\u8868\u683c\u7684\u6837\u5b50\uff0c\u65b9\u4fbf\u9605\u8bfb\u3002\u4e00\u822c\u7528\u6cd5\u4e3aawk [options] &#8216;Pattern{Action}&#8217; file\u3002\u8fd9\u91ccoptions\uff1a\u9009\u9879\uff0cPattern\uff1a\u6a21\u5f0f\uff0cAction\uff1a\u52a8\u4f5c\uff0c\u8fd9\u91cc\u4e3a\u4e86\u7b80\u5355\u63cf\u8ff0\uff0c\u5c31\u4e0d\u5e26\u524d\u4e24\u4e2a\u4e86\uff0c\u76f4\u63a5\u8bf4action\uff0c\u5e38\u7528\u7684\u547d\u4ee4\u5c31\u662fprint\u7528\u6765\u683c\u5f0f\u5316\u8f93\u51fa\u3002\u4e3e\u4e2a\u5c0f\u6817\u5b50<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/wlRd0vFnXxZq0iaqSmUdkOLQE9GoeQFKghRFN3YUrqE1e1JQRAKPtc4gHR7lUxRrQb0XfNgsicwicpClzQbZeZg1w\/640?wx_fmt=png&amp;tp=wxpic&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u8fd9\u4e2a\u6765\u89e3\u91ca\u4e00\u4e0b\u3002\u5982\u679c\u4e0d\u52a0awk\u540e\u9762\u7684\u5185\u5bb9\u662f\u4ec0\u4e48\u5462\uff0c\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e0b<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/wlRd0vFnXxZq0iaqSmUdkOLQE9GoeQFKgcjuB8nwDPUXlEF1bIujS6Av64djxyKFZYXUgR9OWKL6J89NTfOj7dg\/640?wx_fmt=png&amp;tp=wxpic&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u4e00\u5171\u4e09\u884c\u7684\u5185\u5bb9\uff0cawk\u7684\u4f5c\u7528\u662f\u5bf9\u6bcf\u4e00\u884c\u8fdb\u884c\u64cd\u4f5c\u7684\uff0c\u540e\u9762\u7684$8\u662f\u6bcf\u884c\u7684\u9ed8\u8ba4\u6309\u7a7a\u683c\u5206\u7b2c8\u5217\uff0c\u7b2c\u4e00\u884c\u6ca1\u6709\u7b2c8\u5217\uff0c\u6240\u4ee5\u662f\u7a7a\u7684<\/p>\n\n\n\n<p>\u597d\u7684\u54b1\u4eec\u7684\u51c6\u5907\u77e5\u8bc6\u5df2\u7ecf\u51c6\u5907\u5b8c\u6210\u4e86\uff0c\u63a5\u4e0b\u6765\u8fdb\u5165\u5b9e\u9645\u64cd\u4f5c\u7684\u5185\u5bb9\uff0c\u9700\u6c42\u4e3a\uff1a\u8fdb\u5165\u4e00\u4e2a\u76ee\u5f55\uff0c\u8be5\u76ee\u5f55\u6709\u5f88\u591a\u8981\u6253\u5f00\u7684\u5b50\u76ee\u5f55\uff0c\u5b50\u76ee\u5f55\u524d\u9762\u6709\u6570\u5b57\u6807\u53f7\uff0c\u6211\u60f3\u6309\u6570\u5b57\u8fdb\u5165\u76f8\u5e94\u7684\u5b50\u76ee\u5f55\u3002\u9700\u6c42\u8fd8\u662f\u5f88\u7b80\u5355\u7684\uff0c\u6211\u4eec\u5f00\u59cb\u5199\u5427,\u5927\u5bb6\u6309\u7167\u81ea\u5df1\u5b9e\u9645\u7684\u76ee\u5f55\u5199\uff0c\u6211\u7684\u548c\u4f60\u4eec\u4e0d\u4e00\u6837<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#\uff01bin\/bash\n#\u00a0\u9996\u5148\u8981\u8fdb\u5165\u8be5\u76ee\u5f55,\u6211\u8fdb\u5165\u7684\u662f\u6839\u76ee\u5f55\u4e0b\u7684usr\u76ee\u5f55\ncd\u00a0\/usr\n#\u00a0\u8bbe\u7f6e\u4e24\u4e2a\u53d8\u91cf\uff0cx\u4e3a\u524d\u9762\u663e\u793a\u7684\u6570\u5b57\uff0cy\u4e3a\u6570\u7ec4\u7684\u4e0b\u6807\uff0c\u6570\u7ec4\u4e3ali\nx=1y=0#\u00a0\u4e0b\u9762\u662f\u4e00\u4e2afor\u5faa\u73af\uff0c\u5c06d\u5f00\u5934\u7684\u5185\u5bb9\u4e5f\u5c31\u662f\u76ee\u5f55\u663e\u793a\u51fa\u6765\uff0c\u6bcf\u884c\u6309\u7b2c9\u5217\u8f93\u51fa\u4e3ai\nfor\u00a0i\u00a0in\u00a0`ls\u00a0-l\u00a0|\u00a0grep\u00a0^d\u00a0|\u00a0awk\u00a0'{print\u00a0$9}'`\n#\u00a0\u4e0b\u9762\u662f\u5bf9\u6bcf\u4e00\u884c\u7684\u5177\u4f53\u64cd\u4f5c\ndo{\n# \u524d\u9762\u6570\u5b57\uff0c\u540e\u9762\u76ee\u5f55\u540d\n\u00a0\u00a0\u00a0echo\u00a0\"$x:\u00a0$i\"\n# \u5c06\u76ee\u5f55\u540d\u5b58\u5165\u6570\u7ec4li\u4e2d\u00a0\u00a0\u00a0\n  li&#91;$(($y))]=$i\n  #\u00a0x+1\n  x=$(($x+1))\n  # y+1\n  y=$(($y+1))\n  }\n  done\n  #\u00a0\u4e0b\u9762\u7684\u5185\u5bb9\u662f\u8fdb\u5165\u5177\u4f53\u7684\u76ee\u5f55\u7684\u64cd\u4f5c\n  while true\n do\n  echo\u00a0'please\u00a0input\u00a0a\u00a0number:'\n  # \u8f93\u5165\u6570\u5b57\n  read\u00a0inde_x\n  #\u00a0\u5224\u65ad\u6700\u5927\u6570\u5b57\u662f\u5426\u5c0f\u4e8e\u7b49\u4e8e\u76ee\u5f55\u6570\uff0c\u5c0f\u4e8e\u7ee7\u7eed\u8fdb\u5165\u76ee\u5f55\uff0c\u5927\u4e8e\u91cd\u8f93\n  if &#91; $(($inde_x)) -le $(($x-1)) ];then\n  cd\u00a0${li&#91;$(($inde_x-1))]}\n  break\n  else\n  echo\u00a0\"please input correct number\"\n  fi\n done<\/code><\/pre>\n\n\n\n<p>\u4e0a\u9762\u5c31\u662f\u7b80\u5355\u7684\u4f8b\u5b50\uff0c\u8fd9\u4e2a\u64cd\u4f5c\u8981\u7528source\u547d\u4ee4\uff0c\u56e0\u4e3a\u8981\u540c\u6b65\u8fdb\u5165\u76ee\u5f55\uff0c\u5176\u4ed6\u65b9\u5f0f\u662f\u5f02\u6b65\u8fdb\u5165\uff0c\u5f53\u524d\u6587\u4ef6\u6240\u5728\u8def\u5f84\u662f\u6ca1\u6709\u53d8\u7684\uff0c\u5927\u5bb6\u53ef\u4ee5\u8bd5\u4e00\u4e0b\u3002\u5982\u679c\u662froot\u8d26\u53f7\uff0c\u8fd9\u4e2a\u811a\u672c\u4e00\u822c\u653e\u5230\/root\u76ee\u5f55\u4e0b\uff0c\u4e5f\u5c31\u662froot\u8d26\u53f7\u7684\u5bb6\u76ee\u5f55\uff0c\u56e0\u4e3a\u5982\u679c\u6709\u95ee\u9898\u7684\u8bdd\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u547d\u4ee4cd\u5230\u5bb6\u76ee\u5f55\u518d\u6b21\u6267\u884c\u3002<\/p>\n\n\n\n<p>\u8fd9\u6b21\u7684\u4f8b\u5b50\u867d\u7136\u5185\u5bb9\u5c11\uff0c\u4f46\u77e5\u8bc6\u70b9\u8fd8\u662f\u5f88\u591a\u7684\uff0c\u53ef\u4ee5\u5c1d\u8bd5\u7740\u53bb\u8bfb\uff0c\u6ca1\u6709\u63a5\u89e6\u8fc7\u7684shell\u547d\u4ee4\u4e5f\u53ef\u4ee5\u63d0\u524d\u63a5\u89e6\u4e00\u4e0b\u3002<\/p>\n\n\n\n<p>\u8fd9\u6b21\u5230\u8fd9\u91cc\u4e86\uff0c\u4e0b\u6b21\u518d\u89c1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f15\u8a00\uff1a\u4e0a\u7bc7\u6587\u7ae0\u7b80\u5355\u7684\u8bf4\u4e86\u4e00\u4e0b\u6761\u4ef6\u5224\u65ad\u8bed\u53e5\u7684\u5e94\u7528\uff0c\u4e5f\u5c31\u662f\u57fa\u672c\u7684\u8bed\u6cd5\u3002\u63a5\u4e0b\u6765\u8bf4\u4e00\u4e0b\u8fdb\u9636\u7248\u7684\u7528\u6cd5\u548c\u4e00\u4e9b\u4f8b\u5b50\u3002\u5728\u8bf4\u4f8b\u5b50 &#8230; <a title=\"shell\u7f16\u7a0b\u4e3e\u4f8b\" class=\"read-more\" href=\"https:\/\/fanaticboy.com\/?p=830\" aria-label=\"\u9605\u8bfb shell\u7f16\u7a0b\u4e3e\u4f8b\">\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[],"class_list":["post-830","post","type-post","status-publish","format-standard","hentry","category-shell"],"_links":{"self":[{"href":"https:\/\/fanaticboy.com\/index.php?rest_route=\/wp\/v2\/posts\/830","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fanaticboy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fanaticboy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fanaticboy.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/fanaticboy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=830"}],"version-history":[{"count":1,"href":"https:\/\/fanaticboy.com\/index.php?rest_route=\/wp\/v2\/posts\/830\/revisions"}],"predecessor-version":[{"id":831,"href":"https:\/\/fanaticboy.com\/index.php?rest_route=\/wp\/v2\/posts\/830\/revisions\/831"}],"wp:attachment":[{"href":"https:\/\/fanaticboy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=830"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fanaticboy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=830"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fanaticboy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}