\u4e00\u3001&&<\/strong><\/div>\n
1.\u683c\u5f0f<\/strong><\/span><\/div>\n
command1 && command2<\/p>\n
2.\u542b\u4e49<\/strong><\/span><\/div>\n
&&\u5de6\u8fb9\u7684command1\u6267\u884c\u6210\u529f(\u8fd4\u56de0\u8868\u793a\u6210\u529f)\u540e\uff0c&&\u53f3\u8fb9\u7684command2\u624d\u80fd\u88ab\u6267\u884c\u3002<\/p>\n
3.\u5b9e\u4f8b<\/strong><\/span><\/div>\n
(1)\u5f53\u628a\u6587\u4ef6sql.txt\u590d\u5236\u4e00\u4efd\u4e3asql.bak.txt\u6210\u529f\uff0c\u7136\u540e\u663e\u793a\u526f\u672csql.bak.txt<\/p>\n
\r\n [root@RHEL5 shell]# cp sql.txt sql.bak.txt && cat sql.bak.txt\r\n Database Size(MB) Date Created\r\n --------------------------------------------\r\n GOSOUTH 2244 12\/11\/97\r\n TRISUD 5632 8\/9\/99\r\n (2 rows affected)\r\n<\/pre>\n
(2)\u5f53\u6587\u4ef6facebook.txt\u7ecf\u8fc7\u6392\u5e8f\u5e76\u4fdd\u5b58\u5728facebook.txt.sorted\u88ab\u6267\u884c\u6210\u529f\uff0c\u6253\u5370facebook.txt.sorted \u6587\u4ef6<\/p>\n
sort facebook.txt > facebook.txt.sorted && lp facebook.txt.sorted<\/pre>\n
\u4e8c\u3001||<\/strong><\/div>\n
1.\u683c\u5f0f<\/strong><\/span><\/div>\n
command1 || command2<\/p>\n
2.\u542b\u4e49<\/strong><\/span><\/div>\n
\u5982\u679c||\u5de6\u8fb9\u7684command1\u6267\u884c\u5931\u8d25(\u8fd4\u56de1\u8868\u793a\u5931\u8d25)\uff0c\u5c31\u6267\u884c&&\u53f3\u8fb9\u7684command2\u3002<\/p>\n
3.\u5b9e\u4f8b<\/strong><\/span><\/div>\n
(1)\u6253\u53701111.txt\u7684\u7b2c\u4e00\u5217\u5185\u5bb9\uff0c\u82e5\u6267\u884c\u4e0d\u6210\u529f\u5219\u6267\u884c\u663e\u793afacebook.txt\u7684\u5185\u5bb9<\/p>\n
\r\n[root@RHEL5 shell]# awk '{print $1}' 1111.txt || cat facebook.txt \r\nawk: cmd. line:1: fatal: cannot open file `1111.txt' for reading (No such file or directory)\r\ngoogle 110 5000\r\nbaidu 100 5000\r\nguge 50 3000\r\nsohu 100 4500\r\n<\/pre>\n
(2)\u5f53\u6253\u53701111.txt\u7684\u7b2c\u4e00\u5217\u5185\u5bb9\u5f97\u547d\u4ee4\u88ab\u6210\u529f\u6267\u884c\uff0c\u5219\u4e0d\u6267\u884c\u6253\u5370facebook.txt\u7684\u547d\u4ee4<\/p>\n
\r\n[root@RHEL5 shell]# awk '{print $1}' facebook.txt || cat facebook.txt\r\ngoogle\r\nbaidu\r\nguge\r\nsohu\r\n<\/pre>\n
\u4e09\u3001()<\/strong><\/div>\n
\u5982\u679c\u60f3\u6267\u884c\u51e0\u4e2a\u547d\u4ee4\uff0c\u5219\u9700\u8981\u7528\u547d\u4ee4\u5206\u9694\u7b26\u5206\u53f7\u9694\u5f00\u6bcf\u4e2a\u547d\u4ee4\uff0c\u5e76\u4f7f\u7528\u5706\u62ec\u53f7()\u628a\u6240\u6709\u547d\u4ee4\u7ec4\u5408\u8d77\u6765\u3002
\n \u7ed3\u5408||\u548c&&\u53ef\u4ee5\u5b9e\u73b0\u590d\u6742\u7684\u529f\u80fd\u3002<\/p>\n
1.\u683c\u5f0f<\/strong><\/span><\/div>\n
(command1\uff1bcommand2\uff1bcommand3;...)<\/p>\n
2.\u5b9e\u4f8b<\/strong><\/span><\/div>\n
(1)\u4f7f\u7528\u591a\u4e2a\u547d\u4ee4\uff0c\u5982\u679csort\u547d\u4ee4\u6267\u884c\u6210\u529f\uff0c\u5148\u5c06\u6392\u5e8f\u540e\u7684\u6587\u4ef6\u5907\u4efd\u5230\/root\/backup\/\u76ee\u5f55\u4e0b\uff0c\u7136\u540e\u518d\u6253\u5370<\/p>\n
\r\nsort facebook.txt > facebook.txt.sorted && (cp facebook.txt.sorted \/root\/backup\/facebook.txt.sorted;lp facebook.txt.sorted)\r\n<\/pre>\n
(2)\u6253\u5370facebook.txt\u6587\u4ef6\u5931\u8d25\u5c31\u53d1\u90ae\u4ef6\u544a\u77e5root\u7528\u6237\uff0c\u5e76\u5173\u673a<\/p>\n
\r\nlp facebook.txt.sorted ||(echo \"It was not submitted succuessfully\" | mail root;init 0)\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
command1 && command2 &&\u5de6\u8fb9\u7684command1\u6267\u884c\u6210\u529f(\u8fd4\u56de0\u8868\u793a\u6210\u529f)\u540e\uff0c&&\u53f3\u8fb9\u7684c […]<\/p>\n","protected":false},"author":63,"featured_media":153507,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-153506","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/153506","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/63"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=153506"}],"version-history":[{"count":8,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/153506\/revisions"}],"predecessor-version":[{"id":157517,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/153506\/revisions\/157517"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/153507"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=153506"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=153506"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=153506"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}