{"id":83,"date":"2015-04-01T14:48:46","date_gmt":"2015-04-01T06:48:46","guid":{"rendered":"https:\/\/yanjingang.com\/blog\/?p=83"},"modified":"2016-01-07T14:49:00","modified_gmt":"2016-01-07T06:49:00","slug":"linux%e4%b9%8bsed%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/yanjingang.com\/blog\/?p=83","title":{"rendered":"linux\u4e4bsed\u7528\u6cd5"},"content":{"rendered":"
sed\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u6587\u4ef6\u5904\u7406\u5de5\u5177\uff0c\u672c\u8eab\u662f\u4e00\u4e2a\u7ba1\u9053\u547d\u4ee4\uff0c\u4e3b\u8981\u662f\u4ee5\u884c\u4e3a\u5355\u4f4d\u8fdb\u884c\u5904\u7406\uff0c\u53ef\u4ee5\u5c06\u6570\u636e\u884c\u8fdb\u884c\u66ff\u6362\u3001\u5220\u9664\u3001\u65b0\u589e\u3001\u9009\u53d6\u7b49\u7279\u5b9a\u5de5\u4f5c\uff0c\u4e0b\u9762\u5148\u4e86\u89e3\u4e00\u4e0bsed\u7684\u7528\u6cd5<\/div>\n

sed\u547d\u4ee4\u884c\u683c\u5f0f\u4e3a\uff1a
\nsed [-nefri] \u2018command\u2019 \u8f93\u5165\u6587\u672c<\/p>\n

\u5e38\u7528\u9009\u9879\uff1a
\n-n\u2236\u4f7f\u7528\u5b89\u9759(silent)\u6a21\u5f0f\u3002\u5728\u4e00\u822c sed \u7684\u7528\u6cd5\u4e2d\uff0c\u6240\u6709\u6765\u81ea STDIN\u7684\u8d44\u6599\u4e00\u822c\u90fd\u4f1a\u88ab\u5217\u51fa\u5230\u8424\u5e55\u4e0a\u3002\u4f46\u5982\u679c\u52a0\u4e0a -n \u53c2\u6570\u540e\uff0c\u5219\u53ea\u6709\u7ecf\u8fc7sed \u7279\u6b8a\u5904\u7406\u7684\u90a3\u4e00\u884c(\u6216\u8005\u52a8\u4f5c)\u624d\u4f1a\u88ab\u5217\u51fa\u6765\u3002
\n-e\u2236\u76f4\u63a5\u5728\u6307\u4ee4\u5217\u6a21\u5f0f\u4e0a\u8fdb\u884c sed \u7684\u52a8\u4f5c\u7f16\u8f91\uff1b
\n-f\u2236\u76f4\u63a5\u5c06 sed \u7684\u52a8\u4f5c\u5199\u5728\u4e00\u4e2a\u6863\u6848\u5185\uff0c -f filename \u5219\u53ef\u4ee5\u6267\u884c filename \u5185\u7684sed \u52a8\u4f5c\uff1b
\n-r\u2236sed \u7684\u52a8\u4f5c\u652f\u63f4\u7684\u662f\u5ef6\u4f38\u578b\u6b63\u89c4\u8868\u793a\u6cd5\u7684\u8bed\u6cd5\u3002(\u9884\u8bbe\u662f\u57fa\u7840\u6b63\u89c4\u8868\u793a\u6cd5\u8bed\u6cd5)
\n-i\u2236\u76f4\u63a5\u4fee\u6539\u8bfb\u53d6\u7684\u6863\u6848\u5185\u5bb9\uff0c\u800c\u4e0d\u662f\u7531\u8424\u5e55\u8f93\u51fa\u3002<\/p>\n

\u5e38\u7528\u547d\u4ee4\uff1a
\na\u00a0\u00a0 \u2236\u65b0\u589e\uff0c a \u7684\u540e\u9762\u53ef\u4ee5\u63a5\u5b57\u4e32\uff0c\u800c\u8fd9\u4e9b\u5b57\u4e32\u4f1a\u5728\u65b0\u7684\u4e00\u884c\u51fa\u73b0(\u76ee\u524d\u7684\u4e0b\u4e00\u884c)\uff5e
\nc\u00a0\u00a0 \u2236\u53d6\u4ee3\uff0c c \u7684\u540e\u9762\u53ef\u4ee5\u63a5\u5b57\u4e32\uff0c\u8fd9\u4e9b\u5b57\u4e32\u53ef\u4ee5\u53d6\u4ee3 n1,n2 \u4e4b\u95f4\u7684\u884c\uff01
\nd\u00a0\u00a0 \u2236\u5220\u9664\uff0c\u56e0\u4e3a\u662f\u5220\u9664\u554a\uff0c\u6240\u4ee5 d \u540e\u9762\u901a\u5e38\u4e0d\u63a5\u4efb\u4f55\u549a\u549a\uff1b
\ni\u00a0\u00a0 \u2236\u63d2\u5165\uff0c i \u7684\u540e\u9762\u53ef\u4ee5\u63a5\u5b57\u4e32\uff0c\u800c\u8fd9\u4e9b\u5b57\u4e32\u4f1a\u5728\u65b0\u7684\u4e00\u884c\u51fa\u73b0(\u76ee\u524d\u7684\u4e0a\u4e00\u884c)\uff1b
\np\u00a0\u00a0\u2236\u5217\u5370\uff0c\u4ea6\u5373\u5c06\u67d0\u4e2a\u9009\u62e9\u7684\u8d44\u6599\u5370\u51fa\u3002\u901a\u5e38 p \u4f1a\u4e0e\u53c2\u6570 sed -n \u4e00\u8d77\u8fd0\u4f5c\uff5e
\ns\u00a0\u00a0\u2236\u53d6\u4ee3\uff0c\u53ef\u4ee5\u76f4\u63a5\u8fdb\u884c\u53d6\u4ee3\u7684\u5de5\u4f5c\u54e9\uff01\u901a\u5e38\u8fd9\u4e2a s \u7684\u52a8\u4f5c\u53ef\u4ee5\u642d\u914d\u6b63\u89c4\u8868\u793a\u6cd5\uff01\u4f8b\u5982 1,20s\/old\/new\/g \u5c31\u662f\u5566\uff01<\/p>\n

\u4e3e\u4f8b\uff1a\uff08\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u6587\u4ef6\u540d\u4e3aab\uff09
\n\u5220\u9664\u67d0\u884c
\n[root@localhost ruby]\u00a0# sed ‘1d’ ab\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #\u5220\u9664\u7b2c\u4e00\u884c
\n[root@localhost ruby]\u00a0# sed ‘$d’ ab\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0#\u5220\u9664\u6700\u540e\u4e00\u884c
\n[root@localhost ruby]\u00a0# sed ‘1,2d’ ab\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0#\u5220\u9664\u7b2c\u4e00\u884c\u5230\u7b2c\u4e8c\u884c
\n[root@localhost ruby]\u00a0# sed ‘2,$d’ ab\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0#\u5220\u9664\u7b2c\u4e8c\u884c\u5230\u6700\u540e\u4e00\u884c<\/p>\n

\u663e\u793a\u67d0\u884c
\n.\u00a0\u00a0\u00a0 [root@localhost ruby]\u00a0# sed -n ‘1p’ ab\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0#\u663e\u793a\u7b2c\u4e00\u884c
\n[root@localhost ruby]\u00a0# sed -n ‘$p’ ab\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #\u663e\u793a\u6700\u540e\u4e00\u884c
\n[root@localhost ruby]\u00a0# sed -n ‘1,2p’ ab\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #\u663e\u793a\u7b2c\u4e00\u884c\u5230\u7b2c\u4e8c\u884c
\n[root@localhost ruby]\u00a0# sed -n ‘2,$p’ ab\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #\u663e\u793a\u7b2c\u4e8c\u884c\u5230\u6700\u540e\u4e00\u884c<\/p>\n

\u4f7f\u7528\u6a21\u5f0f\u8fdb\u884c\u67e5\u8be2
\n[root@localhost ruby]\u00a0# sed -n ‘\/ruby\/p’ ab\u00a0\u00a0\u00a0 #\u67e5\u8be2\u5305\u62ec\u5173\u952e\u5b57ruby\u6240\u5728\u6240\u6709\u884c
\n[root@localhost ruby]\u00a0# sed -n ‘\/\\$\/p’ ab\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #\u67e5\u8be2\u5305\u62ec\u5173\u952e\u5b57$\u6240\u5728\u6240\u6709\u884c\uff0c\u4f7f\u7528\u53cd\u659c\u7ebf\\\u5c4f\u853d\u7279\u6b8a\u542b\u4e49<\/p>\n

\u589e\u52a0\u4e00\u884c\u6216\u591a\u884c\u5b57\u7b26\u4e32
\n[root@localhost ruby]# cat ab
\nHello!
\nruby is me,welcome to my blog.
\nend
\n[root@localhost ruby]\u00a0# sed ‘1a drink tea’ ab\u00a0\u00a0#\u7b2c\u4e00\u884c\u540e\u589e\u52a0\u5b57\u7b26\u4e32”drink tea”
\nHello!
\ndrink tea
\nruby is me,welcome to my blog.
\nend
\n[root@localhost ruby]\u00a0# sed ‘1,3a drink tea’ ab\u00a0#\u7b2c\u4e00\u884c\u5230\u7b2c\u4e09\u884c\u540e\u589e\u52a0\u5b57\u7b26\u4e32”drink tea”
\nHello!
\ndrink tea
\nruby is me,welcome to my blog.
\ndrink tea
\nend
\ndrink tea
\n[root@localhost ruby]\u00a0# sed ‘1a drink tea\\nor coffee’ ab\u00a0\u00a0\u00a0#\u7b2c\u4e00\u884c\u540e\u589e\u52a0\u591a\u884c\uff0c\u4f7f\u7528\u6362\u884c\u7b26\\n
\nHello!
\ndrink tea
\nor coffee
\nruby is me,welcome to my blog.
\nend<\/p>\n

\u4ee3\u66ff\u4e00\u884c\u6216\u591a\u884c
\n[root@localhost ruby]\u00a0# sed ‘1c Hi’ ab\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0#\u7b2c\u4e00\u884c\u4ee3\u66ff\u4e3aHi
\nHi
\nruby is me,welcome to my blog.
\nend
\n[root@localhost ruby]\u00a0# sed ‘1,2c Hi’ ab\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0#\u7b2c\u4e00\u884c\u5230\u7b2c\u4e8c\u884c\u4ee3\u66ff\u4e3aHi
\nHi
\nend<\/p>\n

\u66ff\u6362\u4e00\u884c\u4e2d\u7684\u67d0\u90e8\u5206
\n\u683c\u5f0f\uff1ased\u00a0‘s\/\u8981\u66ff\u6362\u7684\u5b57\u7b26\u4e32\/\u65b0\u7684\u5b57\u7b26\u4e32\/g’\u00a0\u00a0 \uff08\u8981\u66ff\u6362\u7684\u5b57\u7b26\u4e32\u53ef\u4ee5\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\uff09
\n[root@localhost ruby]\u00a0# sed -n ‘\/ruby\/p’ ab | sed ‘s\/ruby\/bird\/g’\u00a0\u00a0\u00a0 #\u66ff\u6362ruby\u4e3abird
\n[root@localhost ruby]\u00a0# sed -n ‘\/ruby\/p’ ab | sed ‘s\/ruby\/\/g’\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #\u5220\u9664ruby<\/p>\n

\u63d2\u5165
\n[root@localhost ruby]\u00a0# sed -i ‘$a bye’ ab\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0#\u5728\u6587\u4ef6ab\u4e2d\u6700\u540e\u4e00\u884c\u76f4\u63a5\u8f93\u5165”bye”
\n[root@localhost ruby]# cat ab
\nHello!
\nruby is me,welcome to my blog.
\nend
\nbye<\/p>\n

\u6458\u81ea\uff1a\u00a0http:\/\/www.cnblogs.com\/dong008259\/archive\/2011\/12\/07\/2279897.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

sed\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u6587\u4ef6\u5904\u7406\u5de5\u5177\uff0c\u672c\u8eab\u662f\u4e00\u4e2a\u7ba1\u9053\u547d\u4ee4\uff0c\u4e3b\u8981\u662f\u4ee5\u884c\u4e3a\u5355\u4f4d\u8fdb\u884c\u5904\u7406\uff0c\u53ef\u4ee5\u5c06\u6570\u636e\u884c\u8fdb\u884c\u66ff\u6362\u3001\u5220\u9664\u3001\u65b0\u589e […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[31],"tags":[32,64],"_links":{"self":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/83"}],"collection":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=83"}],"version-history":[{"count":0,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/83\/revisions"}],"wp:attachment":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=83"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=83"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=83"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}