{"id":7290,"date":"2022-10-14T17:14:40","date_gmt":"2022-10-14T09:14:40","guid":{"rendered":"http:\/\/www.5x44.cn\/?p=7290"},"modified":"2022-10-14T17:14:40","modified_gmt":"2022-10-14T09:14:40","slug":"grep%e5%9c%a8if%e8%af%ad%e5%8f%a5%e4%b8%ad%e7%9a%84%e8%bf%94%e5%9b%9e%e5%80%bc","status":"publish","type":"post","link":"https:\/\/www.5x44.cn\/?p=7290","title":{"rendered":"grep\u5728if\u8bed\u53e5\u4e2d\u7684\u8fd4\u56de\u503c"},"content":{"rendered":"\n<p>if LANG=C grep -EL &#8220;^ONBOOT=[&#8216;\\&#8221;]?[nN][oO][&#8216;\\&#8221;]?&#8221; \/etc\/sysconfig\/network-scripts\/ifcfg-eth0 > \/dev\/null ; then<br>     echo &#8220;ok&#8221;<br>fi<\/p>\n\n\n\n<p>\u4e0a\u9762\u4ee3\u7801\u6539\u7f16\u81eaCentOs\u7684\/etc\/rc.d\/init.d\/network\u811a\u672c\u4e2d\u7684\u4e00\u90e8\u5206\u3002\u8d77\u521d\u6211\u4e00\u76f4\u5728\u8003\u8651grep\u8f93\u51fa\u65e2\u662f\u8fd4\u56de\u503c\uff0c\u8fd4\u56de\u503c\u65e2\u662fgrep\u6267\u884c\u6210\u529f\u4e8e\u5426\u7684\u5173\u952e\uff0c\u8fd9\u70b9\u8bef\u5bfc\u4e86\u6211\uff0c\u56e0\u4e3agrep\u786e\u5b9e\u4f1a\u8fd4\u56de\u5b57\u7b26\u4e32\uff0c\u4f46\u662f\u8fd9\u4e2a\u8fd4\u56de\u503c\u5e76\u4e0d\u4e00\u5b9a\u4ee3\u8868grep\u6267\u884c\u6210\u529f\u4e86\u3002<\/p>\n\n\n\n<p>\u5982\u4e0agrep -EL\u8868\u793a\uff0c\u6ca1\u6210\u529f\u5339\u914d\u6a21\u5f0f\u5b57\u7b26\u4e32\u5c31\u8f93\u51fa\u6587\u4ef6\u540d\u3002\u6211\u7406\u89e3\u6210\u4e86A!=B \u7ed3\u679c\u662fTRUE\u3002\u4f46\u5176\u5b9e\u5b83\u8fd8\u662f\u5728\u201c\u5339\u914d\u201d\u5b57\u7b26\u4e32\uff0c\u4e5f\u5c31\u662f\u8bf4\u8fd8\u662f\u5728\u6267\u884cgrep -E\uff0c\u53ea\u662f\u5339\u914d\u4e0d\u6210\u529f\u8f93\u51fa\u6587\u4ef6\u540d\u3002\u4e5f\u5c31\u662f\u8bf4\u5339\u914d\u4e0d\u6210\u529f\uff0c\u8f93\u51fa\u6587\u4ef6\u547d\uff0cgrep\u51fd\u6570\u8fd4\u56de1\uff08\u51fd\u6570\u6267\u884c\u5931\u8d25\uff09<\/p>\n\n\n\n<p>\u5176\u5b9egrep -EL\u610f\u4e49\u662f\uff1a\u51fd\u6570\u6267\u884c\u5339\u914d\u5931\u8d25\u5c31\u8f93\u51fa\u6587\u4ef6\u540d\u3002<\/p>\n\n\n\n<p>\u518d\u8fd4\u56de\u770b\u4e0a\u9762\u7684if\u8bed\u53e5\u5c31\u77e5\u9053\uff0c\u5728grep\u5339\u914d\u5931\u8d25\u540e\u4e0d\u6267\u884cif\u8bed\u53e5\u5757\u3002\u548cgrep\u8f93\u51fa\u7684\u5185\u5bb9\u5b8c\u5168\u6ca1\u6709\u5173\u7cfb\uff0c\u524d\u9762\u7684LANG=C\u662f\u8bbe\u7f6e\u4ee5ANSI C\u65b9\u5f0f\u5339\u914d\u5b57\u7b26\u4e32\uff0c\u800c\u540e\u9762\u7684>\/dev\/null\u5b8c\u5168\u6ca1\u6709\u5b9e\u9645\u7684\u4f5c\u7528\uff0c\u53ea\u662f\u4e3a\u4e86\u5c4f\u5e55\u8f93\u51fa\u66f4\u5e72\u51c0\uff0c\u6ca1\u6709\u6742\u4e71\u7684\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>if LANG=C grep -EL &#8220;^ONBOOT=[&#8216;\\&#8221;]?[nN][oO][&#8216;\\&#8221;]?&#038;#&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/www.5x44.cn\/?p=7290\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-7290","post","type-post","status-publish","format-standard","hentry","category-it"],"_links":{"self":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/7290","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7290"}],"version-history":[{"count":1,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/7290\/revisions"}],"predecessor-version":[{"id":7291,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/7290\/revisions\/7291"}],"wp:attachment":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7290"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7290"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7290"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}