{"id":417,"date":"2021-07-28T17:55:00","date_gmt":"2021-07-28T09:55:00","guid":{"rendered":"https:\/\/egonlin.com\/?p=417"},"modified":"2022-04-26T11:43:18","modified_gmt":"2022-04-26T03:43:18","slug":"%e7%ac%ac%e4%ba%8c%e8%8a%82%ef%bc%9ased%e5%91%bd%e4%bb%a4","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=417","title":{"rendered":"\u7b2c\u4e8c\u8282\uff1ased\u547d\u4ee4"},"content":{"rendered":"<h1>\u4e09\u5251\u5ba2\u4e4bsed\u547d\u4ee4<\/h1>\n<h2>\u4e00 sed\u4ecb\u7ecd<\/h2>\n<p>\u200b    sed\u5168\u79f0\uff08stream editor\uff09\u6d41\u5f0f\u7f16\u8f91\u5668\uff0cSed\u4e3b\u8981\u7528\u6765\u81ea\u52a8\u7f16\u8f91\u4e00\u4e2a\u6216\u591a\u4e2a\u6587\u4ef6\u3001\u7b80\u5316\u5bf9\u6587\u4ef6\u7684\u53cd\u590d\u64cd\u4f5c\u3001\u7f16\u5199\u8f6c\u6362\u7a0b\u5e8f\u7b49\uff0c\u5de5\u4f5c\u6d41\u7a0b\u5982\u4e0b<\/p>\n<pre><code class=\"language-python\">sed \u662f\u4e00\u79cd\u5728\u7ebf\u7684\u3001\u975e\u4ea4\u4e92\u5f0f\u7684\u7f16\u8f91\u5668\uff0c\u5b83\u4e00\u6b21\u5904\u7406\u4e00\u884c\u5185\u5bb9\u3002\u5904\u7406\u65f6\uff0c\u628a\u5f53\u524d\u5904\u7406\u7684\u884c\u5b58\u50a8\u5728\n\u4e34\u65f6\u7f13\u51b2\u533a\u4e2d\uff0c\u79f0\u4e3a\u201c\u6a21\u5f0f\u7a7a\u95f4\u201d\uff08pattern space\uff09\uff0c\u63a5\u7740\u7528sed\u547d\u4ee4\u5904\u7406\u7f13\u51b2\u533a\u4e2d\u7684\u5185\u5bb9\uff0c\u5904\u7406\u5b8c\n\u6210\u540e\uff0c\u628a\u7f13\u51b2\u533a\u7684\u5185\u5bb9\u9001\u5f80\u5c4f\u5e55\u3002\u63a5\u7740\u5904\u7406\u4e0b\u4e00\u884c\uff0c\u8fd9\u6837\u4e0d\u65ad\u91cd\u590d\uff0c\u76f4\u5230\u6587\u4ef6\u672b\u5c3e\u3002\u6587\u4ef6\u5185\u5bb9\u5e76\u6ca1\u6709\n\u6539\u53d8\uff0c\u9664\u975e\u4f60\u4f7f\u7528\u91cd\u5b9a\u5411\u5b58\u50a8\u8f93\u51fa,\u6216\u8005\u4f7f\u7528sed -i\u9009\u9879\n-i\u9009\u9879\u5c31\u662f\u5c06\u672c\u8be5\u8f93\u51fa\u5230\u5c4f\u5e55\u4e0a\u7684\u5185\u5bb9\u8f93\u51fa\/\u6d41\u5165\u6587\u4ef6\u4e2d<\/code><\/pre>\n<p>\u200b    sed\u547d\u4ee4\u683c\u5f0f\u5982\u4e0b<\/p>\n<pre><code class=\"language-python\">sed [options] &#039;command&#039; file(s)\nsed [options] -f scriptfile file(s)\n\n# \u6ce8\uff1a\nsed\u548cgrep\u4e0d\u4e00\u6837\uff0c\u4e0d\u7ba1\u662f\u5426\u627e\u5230\u6307\u5b9a\u7684\u6a21\u5f0f\uff0c\u5b83\u7684\u9000\u51fa\u72b6\u6001\u90fd\u662f0\n\u53ea\u6709\u5f53\u547d\u4ee4\u5b58\u5728\u8bed\u6cd5\u9519\u8bef\u65f6\uff0csed\u7684\u9000\u51fa\u72b6\u6001\u624d\u4e0d\u662f0<\/code><\/pre>\n<h2>\u4e8c sed\u9009\u9879\u4e0e\u57fa\u672c\u7528\u6cd5\u793a\u4f8b<\/h2>\n<h3>2.1 sed\u9009\u9879<\/h3>\n<pre><code class=\"language-python\">\u9009\u9879             \u529f\u80fd\n-e              \u5141\u8bb8\u591a\u9879\u7f16\u8f91\n-n              \u53d6\u6d88\u9ed8\u8ba4\u7684\u8f93\u51fa(\u6a21\u5f0f\u7a7a\u95f4\u7684\u5185\u5bb9\u8f93\u51fa)\n-i              inplace\uff0c\u5c31\u5730\u7f16\u8f91\n-r              \u652f\u6301\u6269\u5c55\u5143\u5b57\u7b26\n-f              \u6307\u5b9ased\u811a\u672c\u6587\u4ef6\u540d\n\n\u793a\u4f8b\n# sed -r &#039;&#039; \/etc\/passwd\n# sed -r &#039;p&#039; \/etc\/passwd\n# sed -r -n &#039;p&#039; \/etc\/passwd   \n\n\u6587\u4ef6\u7684\u4e00\u884c\u884c\u5185\u5bb9\u76f8\u5f53\u4e0e\u6c34\u6d41\uff0c\u8fde\u7eed\u4e24\u4e2a-e\u5c31\u662f\u8bbe\u7f6e\u4e86\u4e24\u9053\u5173\u5361\n[root@aliyun ~]# sed &#039;&#039; test.txt \n1111111\n2222222egon\n333333egon\n444444egon\n555555eon\n[root@aliyun ~]# sed -e &#039;3d&#039; -e &#039;1d&#039; test.txt  \n2222222egon\n444444egon\n555555eon\n[root@aliyun ~]# sed -rn -e &#039;1,3d&#039; -e &#039;p&#039; test.txt\n444444egon\n555555eon\n[root@aliyun ~]# \n\n\u4e5f\u53ef\u4ee5\u5c06\u591a\u9053\u5173\u5361\u5199\u5165\u4e00\u4e2a\u6587\u4ef6\u4e2d\n[root@aliyun ~]# cat sed.txt \n1,3d\np\n[root@aliyun ~]# sed -rn -f sed.txt test.txt\n444444egon\n555555eon\n[root@aliyun ~]# <\/code><\/pre>\n<h3>2.2 sed\u547d\u4ee4\u7ec4\u6210<\/h3>\n<p>\u547d\u4ee4\u7531\u201d\u5730\u5740+\u547d\u4ee4\u201c\u4e24\u90e8\u5206\u7ec4\u6210\uff0c\u547d\u4ee4\u5982p\u3001d\uff0c\u66f4\u591a\u8be6\u89e3\u7b2c\u4e09\u7ae0\u8282\uff0c\u672c\u8282\u6211\u4eec\u4e3b\u8981\u4ecb\u7ecd\u5730\u5740<\/p>\n<p>\u5730\u5740\u7528\u4e8e\u51b3\u5b9a\u5bf9\u6d41\u5165\u6a21\u5f0f\u7a7a\u95f4\u7684\u54ea\u4e9b\u884c\u8fdb\u884c\u7f16\u8f91\uff0c\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u5730\u5740\uff0csed\u5c06\u5904\u7406\u6d41\u5165\u6a21\u5f0f\u7a7a\u95f4\u7684\u6240\u6709\u884c\u3002<\/p>\n<p>\u5730\u5740\u53ef\u4ee5\u662f<\/p>\n<ul>\n<li>\n<p>1\u3001\u6570\u5b57<\/p>\n<pre><code class=\"language-python\">sed -n 'p' \/etc\/passwd    \nsed -n '1,3p' \/etc\/passwd \nsed '1,47d' \/etc\/passwd<\/code><\/pre>\n<\/li>\n<li>\n<p>2\u3001\u6b63\u5219\u8868\u8fbe\u5f0f<\/p>\n<pre><code class=\"language-python\">\u4e0egrep\u4e00\u6837\uff0csed\u5728\u6587\u4ef6\u4e2d\u67e5\u627e\u6a21\u5f0f\u65f6\u4e5f\u53ef\u4ee5\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f(RE)\u548c\u5404\u79cd\u5143\u5b57\u7b26\u3002\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\n\u62ec\u5728\u659c\u6760\u95f4\u7684\u6a21\u5f0f\uff0c\u7528\u4e8e\u67e5\u627e\u548c\u66ff\u6362\uff0c\u4ee5\u4e0b\u662fsed\u652f\u6301\u7684\u5143\u5b57\u7b26\u3002\n\n# \u4f7f\u7528\u57fa\u672c\u5143\u5b57\u7b26\u96c6    \n^, $, ., *, [], [^], \\< \\>,\\(\\),\\{\\}\n\n# \u4f7f\u7528\u6269\u5c55\u5143\u5b57\u7b26\u96c6    \n?, +, { }, |, ( )\n\n# \u4f7f\u7528\u6269\u5c55\u5143\u5b57\u7b26\u7684\u65b9\u5f0f\uff1a\n\u8f6c\u4e49\uff0c\u5982\\+\n-r\u53c2\u6570\uff0c\u5982sed -r\n\n[root@aliyun ~]# cat test.txt \n1111111\n2222222egon\n333333egon\n444444egon\n555555eon\n[root@aliyun ~]# sed -rn '\/egon\/p' test.txt \n2222222egon\n333333egon\n444444egon\n[root@aliyun ~]# <\/code><\/pre>\n<\/li>\n<li>\n<p>3\u3001\u6570\u5b57+\u6b63\u5219\u8868\u8fbe\u5f0f<\/p>\n<pre><code class=\"language-python\">[root@aliyun ~]# cat test.txt \n1111111\n2222222egon\n333333egon\n444444egon\n555555eon\n[root@aliyun ~]# sed -rn '1,\/egon\/p' test.txt \n1111111\n2222222egon\n[root@aliyun ~]# \n\n\u89e3\u91ca\uff1a\n# \"1,8p\"\u4ee3\u8868\u6253\u53701\u52308\u884c\uff0c\"1,\/egon\/p\"\u5219\u4ee3\u8868\u53d6\u4ece\u7b2c1\u884c\u5230\u9996\u6b21\u5339\u914d\u5230\/egon\/\u7684\u884c<\/code><\/pre>\n<\/li>\n<\/ul>\n<h3>2.3 \\cregexpc<\/h3>\n<p>\u5730\u5740\u53ef\u4ee5\u662f\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u800c\u6b63\u5219\u8868\u8fbe\u5f0f\u9700\u8981\u653e\u7f6e\u5728\\c\u4e0ec\u4e2d\u95f4\uff0c\u5176\u4e2dc\u53ef\u4ee5\u662f\u4efb\u610f\u5b57\u7b26\uff0c\u4f46\u5fc5\u987b\u8981\u52a0\\\u8f6c\u4e49<\/p>\n<pre><code class=\"language-python\">[root@aliyun ~]# cat test.txt \n1111111\n2222222egon\n333333egon\n444444egon\n555555eon\n[root@aliyun ~]# sed -rn &#039;#egon#p&#039; test.txt \n[root@aliyun ~]# sed -rn &#039;\\#egon#p&#039; test.txt \n2222222egon\n333333egon\n444444egon\n[root@aliyun ~]# <\/code><\/pre>\n<p>\u5982\u679cc\u662f\u5de6\u659c\u6760,\u4e0d\u9700\u8981\u8f6c\u4e49\u4e5f\u53ef\u4ee5<\/p>\n<pre><code class=\"language-pytthon\">[root@aliyun ~]# sed -rn &#039;\\\/egon\/p&#039; test.txt \n2222222egon\n333333egon\n444444egon\n[root@aliyun ~]# sed -rn &#039;\/egon\/p&#039; test.txt \n2222222egon\n333333egon\n444444egon\n[root@aliyun ~]# <\/code><\/pre>\n<p>\u5982\u679c\u5339\u914d\u7684\u6b63\u5219\u91cc\u6709\u5de6\u659c\u6760\uff0c\u8981\u4e48\u5c06\u6b63\u5219\u8f6c\u4e49\uff0c\u8981\u4e48\u5c06c\u8f6c\u4e49<\/p>\n<pre><code class=\"language-python\">[root@aliyun ~]# cat a.txt \n\/etc\/egon\/666\netc\n[root@aliyun ~]# sed -rn &#039;\/\/etc\/egon\/666\/p&#039; a.txt # \u9519\u8bef\nsed: -e expression #1, char 0: no previous regular expression\n\n[root@aliyun ~]# sed -rn &#039;\/\\\/etc\\\/egon\\\/666\/p&#039; a.txt  # \u6b63\u5219\u8f6c\u4e49\n\/etc\/egon\/666\n\n[root@aliyun ~]# sed -rn &#039;#\/etc\/egon\/666#p&#039; a.txt # \u8f6c\u4e49c\uff0c\u5fc5\u987b\u662f\\c\n[root@aliyun ~]# sed -rn &#039;\\#\/etc\/egon\/666#p&#039; a.txt  # \u8f6c\u4e49c\n\/etc\/egon\/666\n[root@aliyun ~]# \n\n# \u793a\u4f8b\n[root@aliyun ~]# cat a.txt \n\/etc\/egon\/666\netc\n[root@aliyun ~]# sed -ri &#039;\/\\\/etc\\\/egon\\\/666\/s\/.*\/xxx\/&#039; a.txt \n[root@aliyun ~]# cat a.txt \nxxx\netc\n[root@aliyun ~]# <\/code><\/pre>\n<h2>\u4e09 sed\u5e38\u7528\u547d\u4ee4<\/h2>\n<p>sed\u547d\u4ee4\u544a\u8bc9sed\u5bf9\u6307\u5b9a\u884c\u8fdb\u884c\u4f55\u79cd\u64cd\u4f5c\uff0c\u5305\u62ec\u6253\u5370\u3001\u5220\u9664\u3001\u4fee\u6539\u7b49\u3002<\/p>\n<pre><code class=\"language-python\">\u547d\u4ee4             \u529f\u80fd\na               \u5728\u5f53\u524d\u884c\u540e\u6dfb\u52a0\u4e00\u884c\u6216\u591a\u884c\nc               \u7528\u65b0\u6587\u672c\u4fee\u6539\uff08\u66ff\u6362\uff09\u5f53\u524d\u884c\u4e2d\u7684\u6587\u672c\nd               \u5220\u9664\u884c\ni               \u5728\u5f53\u524d\u884c\u4e4b\u524d\u63d2\u5165\u6587\u672c\nl               \u4f1a\u7528$\u7b26\u53f7\u6807\u8bc6\u51fa\u6587\u4ef6\u4e2d\u770b\u4e0d\u5230\u7684\u5b57\u7b26\u7684\u4f4d\u7f6e\np               \u6253\u5370\u884c\nn               \u628a\u4e0b\u4e00\u884c\u5185\u5bb9\u8bfb\u5165\u6a21\u5f0f\u7a7a\u95f4\uff0c\u540e\u7eed\u7684\u5904\u7406\u547d\u4ee4\u5904\u7406\u7684\u90fd\u662f\u521a\u8bfb\u5165\u7684\u65b0\u5185\u5bb9\nq               \u7ed3\u675f\u6216\u9000\u51fased\uff0c\u4e0d\u4f1a\u5c06\u540e\u7eed\u5185\u5bb9\u8bfb\u5165\u6a21\u5f0f\u7a7a\u95f4\nr               \u4ece\u6587\u4ef6\u4e2d\u8bfb\n!               \u5bf9\u6240\u9009\u884c\u4ee5\u5916\u7684\u6240\u6709\u884c\u5e94\u7528\u547d\u4ee4\ns               \u7528\u4e00\u4e2a\u5b57\u7b26\u4e32\u66ff\u6362\u53e6\u4e00\u4e2a\nw               \u5c06\u884c\u5199\u5165\u6587\u4ef6\ny               \u5c06\u5b57\u7b26\u8f6c\u6362\u4e3a\u53e6\u4e00\u5b57\u7b26\uff08\u4e0d\u652f\u6301\u6b63\u5219\u8868\u8fbe\u5f0f\uff09,y\/egon\/1234\/  e-&gt;1 g-&gt;2 o-&gt;3 n-&gt;4\n\nh               \u628a\u6a21\u5f0f\u7a7a\u95f4\u91cc\u7684\u5185\u5bb9\u590d\u5236\u5230\u6682\u5b58\u7f13\u51b2\u533a(\u8986\u76d6)\nH               \u628a\u6a21\u5f0f\u7a7a\u95f4\u91cc\u7684\u5185\u5bb9\u8ffd\u52a0\u5230\u6682\u5b58\u7f13\u51b2\u533a\ng               \u53d6\u51fa\u6682\u5b58\u7f13\u51b2\u533a\u7684\u5185\u5bb9\uff0c\u5c06\u5176\u590d\u5236\u5230\u6a21\u5f0f\u7a7a\u95f4\uff0c\u8986\u76d6\u8be5\u5904\u539f\u6709\u5185\u5bb9\nG               \u53d6\u51fa\u6682\u5b58\u7f13\u51b2\u533a\u7684\u5185\u5bb9\uff0c\u5c06\u5176\u590d\u5236\u5230\u6a21\u5f0f\u7a7a\u95f4\uff0c\u8ffd\u52a0\u5728\u539f\u6709\u5185\u5bb9\u540e\u9762\nx               \u4ea4\u6362\u6682\u5b58\u7f13\u51b2\u533a\u4e0e\u6a21\u5f0f\u7a7a\u95f4\u7684\u5185\u5bb9\n\n\u66ff\u6362\u6807\u5fd7 s\ng               \u5728\u884c\u5185\u8fdb\u884c\u5168\u5c40\u66ff\u6362\ni               \u5ffd\u7565\u5927\u5c0f\u5199<\/code><\/pre>\n<p>sed\u547d\u4ee4\u793a\u4f8b<\/p>\n<pre><code class=\"language-python\">\u6253\u5370\u547d\u4ee4\uff1ap\n# sed -r &quot;\/egon\/p&quot; a.txt      \n# sed -r -n &quot;\/egon\/p&quot; a.txt\n\n\u5220\u9664\u547d\u4ee4\uff1ad\uff0c\u6ce8\u610f\u7528\u5355\u5f15\u53f7\n# sed -r &#039;3d&#039; a.txt\n# sed -r &#039;3,$d&#039; a.txt\n# sed -r &#039;$d&#039; a.txt\n# sed -r &#039;\/egon\/d&#039; a.txt  \n# sed -r &#039;1,\/egon\/{\/egon\/d}&#039; a.txt            # \u53ea\u5220\u9664\u6a21\u5f0f\u5339\u914d\u6210\u529f\u7684\u7b2c\u4e00\u884c\n\n[root@egon ~]# cat a.txt \nEgon111111\negon222222\n333Egon333\n444444egon\n5555555555\n6666666666\negon777777\n8888888888\n[root@egon ~]# \n[root@egon ~]# sed -r &#039;\/egon\/d&#039; a.txt  # \u53ea\u5220\u9664\u6a21\u5f0f\u5339\u914d\u6210\u529f\u7684\u6240\u6709\u884c\nEgon111111\n333Egon333\n5555555555\n6666666666\n8888888888\n[root@egon ~]# sed -r &#039;1,\/egon\/{\/egon\/d}&#039; a.txt  # \u53ea\u5220\u9664\u6a21\u5f0f\u5339\u914d\u6210\u529f\u7684\u7b2c\u4e00\u884c\nEgon111111\n333Egon333\n444444egon\n5555555555\n6666666666\negon777777\n8888888888\n\n\u66ff\u6362\u547d\u4ee4\uff1as\n# sed -r &#039;s\/egon\/Bigegon\/&#039; a.txt \n# sed -r &#039;s\/egon\/Bigegon\/g&#039; a.txt \n# sed -r &#039;s\/^egon\/Bigegon\/g&#039; a.txt\n# sed -r -n &#039;s\/root\/egon\/gip&#039; \/etc\/passwd\n# sed -r &#039;s\/[0-9]$\/&amp;.change\/&#039; a.txt       # &amp;\u4ee3\u8868\u5f15\u7528\u6b63\u5219\u5339\u914d\u6210\u529f\u7684\u90a3\u4e00\u90e8\u5206\u5185\u5bb9\n\n# sed -r &#039;s\/^([a-zA-Z]+)([^[a-zA-Z]+)\/\\2\\1\/&#039; a.txt\n# sed -r &#039;s#egon#bigegon#g&#039; a.txt         \n\n\u591a\u91cd\u7f16\u8f91\u547d\u4ee4\uff1ae\n# sed -r -e &#039;1,3d&#039; -e &#039;s\/[Ee]gon\/EGON\/g&#039; a.txt  # \u5728\u524d\u4e00\u4e2a-e\u7684\u57fa\u7840\u4e4b\u4e0a\u8fdb\u884c\u7b2c\u4e8c\u4e2a-e\u64cd\u4f5c\n# sed -r &#039;1,3d;s\/[Ee]gon\/EGON\/g&#039; a.txt\n\n# sed -r &#039;3{s\/[0-9]\/x\/g;s\/[Ee]gon\/EGON\/g}&#039; a.txt  # \u53ea\u5904\u7406\u7b2c\u4e09\u884c\n# sed -r &#039;1,3{s\/[0-9]\/x\/g;s\/[Ee]gon\/EGON\/g}&#039; a.txt  # \u5904\u74061\u52303\u884c\n\n# sed -r -n &#039;1p;p&#039; a.txt  # ;\u5206\u9694\u4f9d\u6b21\u8fd0\u884c\uff0c\u5148\u9488\u5bf9\u7b2c\u4e00\u884c\u8fdb\u884cp\u64cd\u4f5c\uff0c\u518d\u9488\u5bf9\u6240\u6709\u884c\u8fdb\u884cp\u64cd\u4f5c\n# sed -r -n &#039;1{p;p}&#039; a.txt  # \u53ea\u9488\u5bf9\u7b2c\u4e00\u884c\uff0c\u8fde\u7eed\u8fdb\u884c\u4e24\u6b21p\u64cd\u4f5c\n\n\u53cd\u5411\u9009\u62e9!\n# sed -r &#039;3d&#039; a.txt\n# sed -r &#039;3!d&#039; a.txt\n\n\u8bfb\u6587\u4ef6\u547d\u4ee4\uff1ar\n# sed -r &#039;\/^Egon\/r b.txt&#039; a.txt  # \u5728\u5339\u914d\u6210\u529f\u7684\u884c\u540e\u6dfb\u52a0\u6587\u4ef6b.txt\u7684\u5185\u5bb9\n# sed -r &#039;2\/r b.txt&#039; a.txt  # \u5728\u7b2c2\u884c\u540e\u9762\u6dfb\u52a0\u6587\u4ef6b.txt\u7684\u5185\u5bb9\n\n\u5199\u6587\u4ef6\u547d\u4ee4\uff1aw\n# sed -r &#039;\/[Ee]gon\/w b.txt&#039; a.txt  # \u5c06\u5339\u914d\u6210\u529f\u7684\u884c\u5199\u5165\u65b0\u6587\u4ef6b.txt        \n# sed -r &#039;3,$w \/root\/new.txt&#039; a.txt # \u5c06\u7b2c3\u884c\u5230\u6700\u540e\u4e00\u884c\u5199\u5165\/root\/new.txt\n\n\u8ffd\u52a0\u547d\u4ee4\uff1aa\n# sed -r &#039;2aXXXXXXXXXXXXXXXXXXXX&#039; a.txt  # \u5728\u7b2c2\u884c\u540e\u6dfb\u52a0\u4e00\u884c\n# sed -r &#039;2a1111111111111\\               # \u53ef\u4ee5\u7528\\\u7eed\u884c\n> 222222222222\\\n> 333333333333&#039; a.txt\n\n\u63d2\u5165\u547d\u4ee4\uff1ai\n# sed -r &#039;2i1111111111111&#039; \/etc\/hosts\n# sed -r &#039;2i111111111\\\n> 2222222222\\\n> 3333333333&#039; a.txt\n\n\u4fee\u6539\u547d\u4ee4\uff1ac\n# sed -r &#039;2c1111111111111&#039; a.txt\n# sed -r &#039;2c111111111111\\\n> 22222222222\\\n> 33333333333&#039; a.txt\n\n\u628a\u4e0b\u4e00\u884c\u5185\u5bb9\u8bfb\u5165\u6a21\u5f0f\u7a7a\u95f4\uff1an\n# sed -r &#039;\/^Egon\/{n;s\/[0-9]\/x\/g}&#039; a.txt  # \u5c06\u5339\u914d\/^Egon\/\u6210\u529f\u7684\u884c\u7684\u4e0b\u4e00\u884c\u8bfb\u5165\u6a21\u5f0f\u7a7a\u95f4\u8fdb\u884cs\u5904\u7406\n[root@aliyun ~]# cat a.txt \n\/etc\/egon\/666\netc\n[root@aliyun ~]# sed -r &#039;\\#\/etc\/egon\/666#n;c 1111&#039; a.txt \n\/etc\/egon\/666\n1111\n[root@aliyun ~]# \n\n\u8f6c\u6362\u547d\u4ee4\uff1ay\n# sed -r &#039;1,3y\/Eeo\/12X\/&#039; a.txt  # 1\u52303\u884c\u8fdb\u884c\u8f6c\u6362 \u5bf9\u5e94\u89c4\u5219\uff1aE-&gt;1 e-&gt;2 o-&gt;X\n\n\u9000\u51fa\uff1aq\n# sed -r &#039;5q&#039; a.txt           \n# sed -r &#039;\/[Ee]gon\/{ s\/[0-9]\/X\/; q; }&#039; a.txt  # \u5339\u914d\u6210\u529f\/[Ee]gon\/\u5219\u6267\u884c{}\u5185\u547d\u4ee4\uff0cq\u4ee3\u8868\u9000\u51fa\uff0c\u5373\u66ff\u6362\u4e00\u6b21\u5219\u9000\u51fa\uff0c\u5982\u679c\u6587\u4ef6\u4e2d\u591a\u884c\u7b26\u5408\u89c4\u5219\u7684\u5185\u5bb9\u4e5f\u53ea\u66ff\u6362\u4e86\u7b2c\u4e00\u4e2a<\/code><\/pre>\n<h2>\u56db \u6a21\u5f0f\u7a7a\u95f4\u4e0e\u4fdd\u6301\u7a7a\u95f4<\/h2>\n<p>sed \u6709\u4e24\u4e2a\u5185\u7f6e\u7684\u5b58\u50a8\u7a7a\u95f4\uff1a<\/p>\n<ul>\n<li>\n<p>\u6a21\u5f0f\u7a7a\u95f4\uff08pattern space\uff09\uff1a <\/p>\n<p>\u5982\u4f60\u6240\u77e5\uff0c\u6a21\u5f0f\u7a7a\u95f4\u7528\u4e8e sed \u6267\u884c\u7684\u6b63\u5e38\u6d41\u7a0b\u4e2d\u3002\u8be5\u7a7a\u95f4 sed \u5185\u7f6e\u7684\u4e00\u4e2a\u7f13\u51b2\u533a\uff0c\u7528\u6765\u5b58\u653e\u3001\u4fee\u6539\u4ece\u8f93\u5165\u6587\u4ef6\u8bfb\u53d6\u7684\u5185\u5bb9\u3002<\/p>\n<\/li>\n<li>\n<p>\u4fdd\u6301\u7a7a\u95f4\uff08hold space\uff09\uff1a <\/p>\n<p>\u4fdd\u6301\u7a7a\u95f4\u662f\u53e6\u5916\u4e00\u4e2a\u7f13\u51b2\u533a\uff0c\u7528\u6765\u5b58\u653e\u4e34\u65f6\u6570\u636e\u3002Sed \u53ef\u4ee5\u5728\u4fdd\u6301\u7a7a\u95f4\u548c\u6a21\u5f0f\u7a7a\u95f4\u4ea4\u6362\u6570\u636e\uff0c\u4f46\u662f\u4e0d\u80fd\u5728\u4fdd\u6301\u7a7a\u95f4\u4e0a\u6267\u884c\u666e\u901a\u7684 sed \u547d\u4ee4\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u6211\u4eec\u5df2\u7ecf\u8ba8\u8bba\u8fc7\uff0c\u6bcf\u6b21\u5faa\u73af\u8bfb\u53d6\u6570\u636e\u8fc7\u7a0b\u4e2d\uff0c\u6a21\u5f0f\u7a7a\u95f4\u7684\u5185\u5bb9\u90fd\u4f1a\u88ab\u6e05\u7a7a\uff0c\u7136\u800c\u4fdd\u6301\u7a7a\u95f4\u7684\u5185\u5bb9\u5219\u4fdd\u6301\u4e0d\u53d8\uff0c\u4e0d\u4f1a\u5728\u5faa\u73af\u4e2d\u88ab\u5220\u9664\u3002<\/p>\n<p>\u6a21\u5f0f\u7a7a\u95f4\u4e0e\u4fdd\u6301\u7a7a\u95f4\u7684\u64cd\u4f5c\u547d\u4ee4<\/p>\n<pre><code class=\"language-python\">x\uff1a\u547d\u4ee4x(exchange) \u7528\u4e8e\u4ea4\u6362\u6a21\u5f0f\u7a7a\u95f4\u548c\u4fdd\u6301\u7a7a\u95f4\u7684\u5185\u5bb9\n\nh\uff1a\u6a21\u5f0f\u7a7a\u95f4\u590d\u5236\/\u8986\u76d6\u5230\u4fdd\u6301\u7a7a\u95f4\nH\uff1a\u6a21\u5f0f\u7a7a\u95f4\u8ffd\u52a0\u5230\u4fdd\u6301\u7a7a\u95f4\n\ng\uff1a\u4fdd\u6301\u7a7a\u95f4\u590d\u5236\/\u8986\u76d6\u5230\u6a21\u5f0f\u7a7a\u95f4\nG\uff1a\u4fdd\u6301\u7a7a\u95f4\u8ffd\u52a0\u5230\u6a21\u5f0f\u7a7a\u95f4\n\nn\uff1a\u8bfb\u53d6\u4e0b\u4e00\u884c\u5230\/\u8986\u76d6\u5230\u6a21\u5f0f\u7a7a\u95f4\nN\uff1a\u5c06\u4e0b\u4e00\u884c\u6dfb\u52a0\u5230\u6a21\u5f0f\u7a7a\u95f4\n\nd\uff1a\u5220\u9664pattern space\u4e2d\u7684\u6240\u6709\u884c\uff0c\u5e76\u8bfb\u5165\u4e0b\u4e00\u65b0\u884c\u5230pattern space\u4e2d<\/code><\/pre>\n<p>\u793a\u4f8b:\u4ea4\u6362\u6587\u4ef6\u7684\u884c<\/p>\n<pre><code class=\"language-python\">[root@egon ~]# cat test.txt \n1111\n2222\n3333\n\n# ======================\u65b9\u5f0f1\uff1a======================\n[root@egon ~]# tac test.txt \n3333\n2222\n1111\n[root@egon ~]# \n\n# ======================\u65b9\u5f0f2\uff1a======================\n\u601d\u8def\uff1a\n# 1\u3001\u8bfb\u53d6\u6587\u4ef6\u7b2c\u4e00\u884c\u5185\u5bb9\u5230\u6a21\u5f0f\u7a7a\u95f4\uff0c\u8fdb\u884c\u7684\u64cd\u4f5c\u5982\u4e0b  \n# \u5c06\u6a21\u5f0f\u7a7a\u95f4\u5185\u5bb9\u8986\u76d6\u5230\u4fdd\u6301\u7a7a\u95f4\n# \u5220\u9664\u6a21\u5f0f\u7a7a\u95f4\u5185\u5bb9\n\n# 2\u3001\u8bfb\u53d6\u6587\u4ef6\u7b2c\u4e8c\u884c\u5185\u5bb9\u5230\u6a21\u5f0f\u7a7a\u95f4\uff0c\u8fdb\u884c\u7684\u64cd\u4f5c\u5982\u4e0b  \n# \u5c06\u4fdd\u6301\u5185\u5bb9\u8ffd\u52a0\u5230\u6a21\u5f0f\u7a7a\u95f4\n# \u5c06\u6a21\u5f0f\u7a7a\u95f4\u5185\u5bb9\u8986\u76d6\u5230\u4fdd\u6301\u7a7a\u95f4\n# \u5220\u9664\u6a21\u5f0f\u7a7a\u95f4\u5185\u5bb9 \n\n# 3\u3001\u8bfb\u53d6\u6587\u4ef6\u7b2c\u4e09\u884c\u5185\u5bb9\u5230\u6a21\u5f0f\u7a7a\u95f4\uff0c\u8fdb\u884c\u7684\u64cd\u4f5c\u5982\u4e0b  \n# \u5c06\u4fdd\u6301\u7a7a\u95f4\u5185\u5bb9\u8ffd\u52a0\u5230\u6a21\u5f0f\u7a7a\u95f4\n\n\u5b9e\u73b0\uff1a\nsed -r &#039;1h;1d;2G;2h;2d;3G&#039; test.txt\n\u6216\u8005\nsed &#039;1!G;h;$!d&#039; test.txt<\/code><\/pre>\n<h2>\u4e94 sed\u811a\u672c<\/h2>\n<div id=\"rml_readmorelogin_placeholder\" style=\"position:relative;\"><div id=\"rml_fade_content\" style=\"position: absolute;\r\ntop:-10em;\r\nwidth:100%;\r\nheight:10em;\r\nbackground: -webkit-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -moz-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -o-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -ms-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\"><\/div><div class=\"wpf-controller aru_rml_from_in_post\" style=\"background-color:#eeeeee;border:5px solid #cce6ff;\" id=\"ARU_ReadMoreLogin_ReadMoreLoginController\"><h2 id=\"Header\">\u67e5\u770b\u66f4\u591a<\/h2><div id=\"Message\"><p>\u8054\u7cfb\u7ba1\u7406\u5458\u5fae\u4fe1tutu19192010\uff0c\u6ce8\u518c\u8d26\u53f7<\/p>\n<\/div><div id=\"StatusBarHeader\"><\/div><form id=\"ARU_ReadMoreLogin_ReadMoreLoginController\"><input name=\"post_id\" value=\"417\" type=\"hidden\"\/><input name=\"_init_callback\" value=\"InitLogin\" type=\"hidden\"\/><input name=\"post_id\" value=\"417\" type=\"hidden\"\/><input name=\"rt_ype\" value=\"1\" type=\"hidden\"\/><input name=\"nonce\" value=\"43fc250302\" type=\"hidden\"\/><input name=\"_wpnonce\" value=\"6195572b4d\" type=\"hidden\"\/><input name=\"_controller\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginController\" type=\"hidden\"\/><input name=\"_proxy_controller\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginController\" type=\"hidden\"\/><input name=\"_view\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginView\" type=\"hidden\"\/><table class=\"wpf-table-placeholder\"><tbody class=\"wpf-table-placeholder\"><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\" width=\"400px\"><table class=\"wpf-table-placeholder\"><tbody class=\"wpf-table-placeholder\"><tr class=\"wpf-table-placeholder\"><th class=\"wpf-table-placeholder-input\"><label class=\"wpf-label\">Username:<\/label><\/th><\/tr><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\"><input class=\"regular-text text_input\" name=\"username\" value=\"\" type=\"text\"\/><\/td><\/tr><tr class=\"wpf-table-placeholder\"><th class=\"wpf-table-placeholder-input\"><label class=\"wpf-label\">Password:<\/label><\/th><\/tr><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\"><input class=\"regular-text text_input\" name=\"password\" value=\"\" type=\"password\"\/><\/td><\/tr><\/tbody><\/table><p class=\"wpf-table-placeholder submit\"><button class=\"wp_plugin_framework_ajax_button\" type=\"button\" style=\"background-color:#4D90FE;;color:#ffffff;;border:1px solid #3079ed;\" name=\"_event\" value=\"ButtonLogin\">Log in<\/button><\/p><\/td><td class=\"wpf-table-placeholder-input\"><\/td><\/tr><\/tbody><\/table><\/form><div id=\"ButtonStartRegister\"><a href=\"https:\/\/egonlin.com\/wp-login.php?action=register\">Register<\/a><\/div><div id=\"Link1\"><a href=\"https:\/\/egonlin.com\/wp-login.php?action=lostpassword\">Forgotten username or password?<\/a><\/div><div id=\"StatusBarFooter\"><\/div><\/div><\/div><div id=aru_remaining_content><\/div>","protected":false},"excerpt":{"rendered":"<p>\u4e09\u5251\u5ba2\u4e4bsed\u547d\u4ee4 \u4e00 sed\u4ecb\u7ecd \u200b sed\u5168\u79f0\uff08stream editor\uff09\u6d41\u5f0f\u7f16\u8f91\u5668\uff0cSed\u4e3b\u8981\u7528\u6765\u81ea\u52a8 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[70],"tags":[21,19,75,22,20],"_links":{"self":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/417"}],"collection":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=417"}],"version-history":[{"count":0,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/417\/revisions"}],"wp:attachment":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=417"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=417"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=417"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}