{"id":917,"date":"2018-01-11T16:57:04","date_gmt":"2018-01-11T08:57:04","guid":{"rendered":"https:\/\/damogame.cn:15443\/wordpress\/?p=917"},"modified":"2018-01-11T16:57:04","modified_gmt":"2018-01-11T08:57:04","slug":"xargs%e5%91%bd%e4%bb%a4","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/917","title":{"rendered":"xargs\u547d\u4ee4"},"content":{"rendered":"<div id=\"title\" class=\"clearfix\">\n<h1 class=\"left\">xargs\u547d\u4ee4<\/h1>\n<div class=\"right\"><a href=\"http:\/\/man.linuxde.net\/sub\/%e5%b8%b8%e7%94%a8%e5%b7%a5%e5%85%b7%e5%91%bd%e4%bb%a4\" rel=\"tag\">\u5e38\u7528\u5de5\u5177\u547d\u4ee4<\/a><\/div>\n<\/div>\n<ul class=\"ad-arc-around ad-arc-top clearfix\">\n<li class=\"left border-right-none\"><a class=\"col-red\" href=\"http:\/\/man.linuxde.net\/study_route\">Linux\u5b66\u4e60\u8def\u7ebf\u89c4\u5212\uff0c\u638c\u63e1\u5c0f\u767d\u53d8\u602a\u517d\u7684\u72ec\u95e8\u7edd\u6280\uff0c\u8ba9\u7ad9\u957f\u752813\u5e74\u7684\u5de5\u4f5c\u7ecf\u9a8c\u544a\u8bc9\u4f60\u4ec0\u4e48\u662f\u6377\u5f84\uff01<\/a><\/li>\n<li class=\"left\"><a class=\"col-green\" href=\"http:\/\/man.linuxde.net\/interview_skill\">Linux\u9762\u8bd5\u5fc5\u5907\u6280\u5de7\uff0c\u6280\u672f\u9762+\u4e3b\u7ba1\u9762+HR\u9762\uff0c\u6bcf\u4e00\u9762\u90fd\u80fd\u8131\u9896\u800c\u51fa\uff0c\u8f7b\u677e\u641e\u5b9a Offer\uff01<\/a><\/li>\n<\/ul>\n<div id=\"arc-body\">\n<p><strong>xargs\u547d\u4ee4<\/strong>\u662f\u7ed9\u5176\u4ed6\u547d\u4ee4\u4f20\u9012\u53c2\u6570\u7684\u4e00\u4e2a\u8fc7\u6ee4\u5668\uff0c\u4e5f\u662f\u7ec4\u5408\u591a\u4e2a\u547d\u4ee4\u7684\u4e00\u4e2a\u5de5\u5177\u3002\u5b83\u64c5\u957f\u5c06\u6807\u51c6\u8f93\u5165\u6570\u636e\u8f6c\u6362\u6210\u547d\u4ee4\u884c\u53c2\u6570\uff0cxargs\u80fd\u591f\u5904\u7406\u7ba1\u9053\u6216\u8005stdin\u5e76\u5c06\u5176\u8f6c\u6362\u6210\u7279\u5b9a\u547d\u4ee4\u7684\u547d\u4ee4\u53c2\u6570\u3002xargs\u4e5f\u53ef\u4ee5\u5c06\u5355\u884c\u6216\u591a\u884c\u6587\u672c\u8f93\u5165\u8f6c\u6362\u4e3a\u5176\u4ed6\u683c\u5f0f\uff0c\u4f8b\u5982\u591a\u884c\u53d8\u5355\u884c\uff0c\u5355\u884c\u53d8\u591a\u884c\u3002xargs\u7684\u9ed8\u8ba4\u547d\u4ee4\u662f<span class=\"wp_keywordlink\"><a title=\"echo\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/echo\" target=\"_blank\" rel=\"noopener\">echo<\/a><\/span>\uff0c\u7a7a\u683c\u662f\u9ed8\u8ba4\u5b9a\u754c\u7b26\u3002\u8fd9\u610f\u5473\u7740\u901a\u8fc7\u7ba1\u9053\u4f20\u9012\u7ed9xargs\u7684\u8f93\u5165\u5c06\u4f1a\u5305\u542b\u6362\u884c\u548c\u7a7a\u767d\uff0c\u4e0d\u8fc7\u901a\u8fc7xargs\u7684\u5904\u7406\uff0c\u6362\u884c\u548c\u7a7a\u767d\u5c06\u88ab\u7a7a\u683c\u53d6\u4ee3\u3002xargs\u662f\u6784\u5efa\u5355\u884c\u547d\u4ee4\u7684\u91cd\u8981\u7ec4\u4ef6\u4e4b\u4e00\u3002<\/p>\n<h3>xargs\u547d\u4ee4\u7528\u6cd5<\/h3>\n<p>xargs\u7528\u4f5c\u66ff\u6362\u5de5\u5177\uff0c\u8bfb\u53d6\u8f93\u5165\u6570\u636e\u91cd\u65b0\u683c\u5f0f\u5316\u540e\u8f93\u51fa\u3002<\/p>\n<p>\u5b9a\u4e49\u4e00\u4e2a\u6d4b\u8bd5\u6587\u4ef6\uff0c\u5185\u6709\u591a\u884c\u6587\u672c\u6570\u636e\uff1a<\/p>\n<pre><span class=\"wp_keywordlink\"><a title=\"cat\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/cat\" target=\"_blank\" rel=\"noopener\">cat<\/a><\/span> <span class=\"wp_keywordlink\"><a title=\"test\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/test\" target=\"_blank\" rel=\"noopener\">test<\/a><\/span>.txt\r\n\r\na b c d e f g\r\nh i j k l m n\r\no p q\r\nr s t\r\nu v <span class=\"wp_keywordlink\"><a title=\"w\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/w\" target=\"_blank\" rel=\"noopener\">w<\/a><\/span> x y z\r\n<\/pre>\n<p>\u591a\u884c\u8f93\u5165\u5355\u884c\u8f93\u51fa\uff1a<\/p>\n<pre>cat test.txt | xargs\r\n\r\na b c d e f g h i j k l m n o p q r s t u v w x y z<\/pre>\n<p><strong>-n\u9009\u9879<\/strong>\u591a\u884c\u8f93\u51fa\uff1a<\/p>\n<pre>cat test.txt | xargs -n3\r\n\r\na b c\r\nd e f\r\ng h i\r\nj k l\r\nm n o\r\np q r\r\ns t u\r\nv w x\r\ny z<\/pre>\n<p><strong>-d\u9009\u9879<\/strong>\u53ef\u4ee5\u81ea\u5b9a\u4e49\u4e00\u4e2a\u5b9a\u754c\u7b26\uff1a<\/p>\n<pre>echo \"nameXnameXnameXname\" | xargs -dX\r\n\r\nname name name name<\/pre>\n<p>\u7ed3\u5408<strong>-n\u9009\u9879<\/strong>\u4f7f\u7528\uff1a<\/p>\n<pre>echo \"nameXnameXnameXname\" | xargs -dX -n2\r\n\r\nname name\r\nname name<\/pre>\n<p><strong>\u8bfb\u53d6stdin\uff0c\u5c06\u683c\u5f0f\u5316\u540e\u7684\u53c2\u6570\u4f20\u9012\u7ed9\u547d\u4ee4<\/strong><\/p>\n<p>\u5047\u8bbe\u4e00\u4e2a\u547d\u4ee4\u4e3a sk.sh \u548c\u4e00\u4e2a\u4fdd\u5b58\u53c2\u6570\u7684\u6587\u4ef6arg.txt\uff1a<\/p>\n<pre>#!\/bin\/bash\r\n#sk.sh\u547d\u4ee4\u5185\u5bb9\uff0c\u6253\u5370\u51fa\u6240\u6709\u53c2\u6570\u3002\r\n\r\necho $*\r\n<\/pre>\n<p>arg.txt\u6587\u4ef6\u5185\u5bb9\uff1a<\/p>\n<pre>cat arg.txt\r\n\r\naaa\r\nbbb\r\nccc\r\n<\/pre>\n<p>xargs\u7684\u4e00\u4e2a<strong>\u9009\u9879-I<\/strong>\uff0c\u4f7f\u7528-I\u6307\u5b9a\u4e00\u4e2a\u66ff\u6362\u5b57\u7b26\u4e32{}\uff0c\u8fd9\u4e2a\u5b57\u7b26\u4e32\u5728xargs\u6269\u5c55\u65f6\u4f1a\u88ab\u66ff\u6362\u6389\uff0c\u5f53-I\u4e0exargs\u7ed3\u5408\u4f7f\u7528\uff0c\u6bcf\u4e00\u4e2a\u53c2\u6570\u547d\u4ee4\u90fd\u4f1a\u88ab\u6267\u884c\u4e00\u6b21\uff1a<\/p>\n<pre>cat arg.txt | xargs -I {} .\/sk.sh -p {} -l\r\n\r\n-p aaa -l\r\n-p bbb -l\r\n-p ccc -l\r\n<\/pre>\n<p>\u590d\u5236\u6240\u6709\u56fe\u7247\u6587\u4ef6\u5230 \/data\/images \u76ee\u5f55\u4e0b\uff1a<\/p>\n<pre><span class=\"wp_keywordlink\"><a title=\"ls\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/ls\" target=\"_blank\" rel=\"noopener\">ls<\/a><\/span> *.jpg | xargs -n1 -I <span class=\"wp_keywordlink\"><a title=\"cp\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/cp\" target=\"_blank\" rel=\"noopener\">cp<\/a><\/span> {} \/data\/images<\/pre>\n<p><strong>xargs\u7ed3\u5408<span class=\"wp_keywordlink\"><a title=\"find\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/find\" target=\"_blank\" rel=\"noopener\">find<\/a><\/span>\u4f7f\u7528<\/strong><\/p>\n<p>\u7528<span class=\"wp_keywordlink\"><a title=\"rm\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/rm\" target=\"_blank\" rel=\"noopener\">rm<\/a><\/span>\u00a0\u5220\u9664\u592a\u591a\u7684\u6587\u4ef6\u65f6\u5019\uff0c\u53ef\u80fd\u5f97\u5230\u4e00\u4e2a\u9519\u8bef\u4fe1\u606f\uff1a\/bin\/rm Argument list too long. \u7528xargs\u53bb\u907f\u514d\u8fd9\u4e2a\u95ee\u9898\uff1a<\/p>\n<pre>find . -<span class=\"wp_keywordlink\"><a title=\"type\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/type\" target=\"_blank\" rel=\"noopener\">type<\/a><\/span> f -name \"*.log\" -print0 | xargs -0 rm -f<\/pre>\n<p>xargs -0\u5c06\\0\u4f5c\u4e3a\u5b9a\u754c\u7b26\u3002<\/p>\n<p>\u7edf\u8ba1\u4e00\u4e2a\u6e90\u4ee3\u7801\u76ee\u5f55\u4e2d\u6240\u6709<span class=\"wp_keywordlink\"><a title=\"php\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/php\" target=\"_blank\" rel=\"noopener\">php<\/a><\/span>\u6587\u4ef6\u7684\u884c\u6570\uff1a<\/p>\n<pre>find . -type f -name \"*.php\" -print0 | xargs -0 <span class=\"wp_keywordlink\"><a title=\"wc\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/wc\" target=\"_blank\" rel=\"noopener\">wc<\/a><\/span> -l<\/pre>\n<p>\u67e5\u627e\u6240\u6709\u7684jpg \u6587\u4ef6\uff0c\u5e76\u4e14\u538b\u7f29\u5b83\u4eec\uff1a<\/p>\n<pre>find . -type f -name \"*.jpg\" -print | xargs <span class=\"wp_keywordlink\"><a title=\"tar\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/tar\" target=\"_blank\" rel=\"noopener\">tar<\/a><\/span> -czvf images.tar.gz\r\n<\/pre>\n<p><strong>xargs\u5176\u4ed6\u5e94\u7528<\/strong><\/p>\n<p>\u5047\u5982\u4f60\u6709\u4e00\u4e2a\u6587\u4ef6\u5305\u542b\u4e86\u5f88\u591a\u4f60\u5e0c\u671b\u4e0b\u8f7d\u7684URL\uff0c\u4f60\u80fd\u591f\u4f7f\u7528xargs\u4e0b\u8f7d\u6240\u6709\u94fe\u63a5\uff1a<\/p>\n<pre>cat url-list.txt | xargs <span class=\"wp_keywordlink\"><a title=\"wget\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/wget\" target=\"_blank\" rel=\"noopener\">wget<\/a><\/span> -c\r\n<\/pre>\n<h3>\u5b50Shell\uff08Subshells\uff09<\/h3>\n<p>\u8fd0\u884c\u4e00\u4e2ashell\u811a\u672c\u65f6\u4f1a\u542f\u52a8\u53e6\u4e00\u4e2a\u547d\u4ee4\u89e3\u91ca\u5668.\uff0c\u5c31\u597d\u50cf\u4f60\u7684\u547d\u4ee4\u662f\u5728\u547d\u4ee4\u884c\u63d0\u793a\u4e0b\u88ab\u89e3\u91ca\u7684\u4e00\u6837\uff0c\u7c7b\u4f3c\u4e8e\u6279\u5904\u7406\u6587\u4ef6\u91cc\u7684\u4e00\u7cfb\u5217\u547d\u4ee4\u3002\u6bcf\u4e2ashell\u811a\u672c\u6709\u6548\u5730\u8fd0\u884c\u5728\u7236shell(parent shell)\u7684\u4e00\u4e2a\u5b50\u8fdb\u7a0b\u91cc\u3002\u8fd9\u4e2a\u7236shell\u662f\u6307\u5728\u4e00\u4e2a\u63a7\u5236\u7ec8\u7aef\u6216\u5728\u4e00\u4e2axterm\u7a97\u53e3\u4e2d\u7ed9\u4f60\u547d\u4ee4\u6307\u793a\u7b26\u7684\u8fdb\u7a0b\u3002<\/p>\n<pre>cmd1 | ( cmd2; cmd3; cmd4 ) | cmd5<\/pre>\n<p>\u5982\u679ccmd2 \u662f<span class=\"wp_keywordlink\"><a title=\"cd\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/cd\" target=\"_blank\" rel=\"noopener\">cd<\/a><\/span>\u00a0\/\uff0c\u90a3\u4e48\u5c31\u4f1a\u6539\u53d8\u5b50Shell\u7684\u5de5\u4f5c\u76ee\u5f55\uff0c\u8fd9\u79cd\u6539\u53d8\u53ea\u662f\u5c40\u9650\u4e8e\u5b50shell\u5185\u90e8\uff0ccmd5\u5219\u5b8c\u5168\u4e0d\u77e5\u9053\u5de5\u4f5c\u76ee\u5f55\u53d1\u751f\u7684\u53d8\u5316\u3002\u5b50shell\u662f\u5d4c\u5728\u5706\u62ec\u53f7()\u5185\u90e8\u7684\u547d\u4ee4\u5e8f\u5217\uff0c\u5b50Shell\u5185\u90e8\u5b9a\u4e49\u7684\u53d8\u91cf\u4e3a\u5c40\u90e8\u53d8\u91cf\u3002<\/p>\n<p>\u5b50shell\u53ef\u7528\u4e8e\u4e3a\u4e00\u7ec4\u547d\u4ee4\u8bbe\u5b9a\u4e34\u65f6\u7684\u73af\u5883\u53d8\u91cf\uff1a<\/p>\n<pre class=\"PROGRAMLISTING\">COMMAND1\r\nCOMMAND2\r\nCOMMAND3\r\n(\r\n  IFS=:\r\n  PATH=\/bin\r\n  <span class=\"wp_keywordlink\"><a title=\"unset\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/unset\" target=\"_blank\" rel=\"noopener\">unset<\/a><\/span> TERMINFO\r\n  <span class=\"wp_keywordlink\"><a title=\"set\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/set\" target=\"_blank\" rel=\"noopener\">set<\/a><\/span> -C\r\n  shift 5\r\n  COMMAND4\r\n  COMMAND5\r\n  <span class=\"wp_keywordlink\"><a title=\"exit\u547d\u4ee4\" href=\"http:\/\/man.linuxde.net\/exit\" target=\"_blank\" rel=\"noopener\">exit<\/a><\/span> 3 # \u53ea\u662f\u4ece\u5b50shell\u9000\u51fa\u3002\r\n)\r\n# \u7236shell\u4e0d\u53d7\u5f71\u54cd\uff0c\u53d8\u91cf\u503c\u6ca1\u6709\u66f4\u6539\u3002\r\nCOMMAND6\r\nCOMMAND7<\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>xargs\u547d\u4ee4 \u5e38\u7528\u5de5\u5177\u547d\u4ee4 Linux<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[117],"class_list":["post-917","post","type-post","status-publish","format-standard","hentry","tag-01-linux"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/917","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=917"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/917\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=917"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=917"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=917"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}