{"id":15308,"date":"2023-03-19T11:55:30","date_gmt":"2023-03-19T03:55:30","guid":{"rendered":"https:\/\/ailog.tw\/lifelog\/?p=15308"},"modified":"2023-03-19T12:35:16","modified_gmt":"2023-03-19T04:35:16","slug":"linux-shell-script-if-else","status":"publish","type":"post","link":"https:\/\/ailog.tw\/lifelog\/2023\/03\/19\/linux-shell-script-if-else\/","title":{"rendered":"Linux Shell Script if \/ else\u4f7f\u7528\u65b9\u6cd5\u7bc4\u4f8b"},"content":{"rendered":"

\u5728Linux Shell Script\u4e2d\u5e38\u6703\u900f\u904eif \/ else\u8a9e\u6cd5\u4f86\u5b8c\u6210\u4e00\u4e9b\u5224\u65b7\uff0c\u5c0f\u7de8\u4eca\u5929\u8981\u4f86\u4ecb\u7d39\u5e7e\u7a2e\u5e38\u898b\u7684\u5beb\u6cd5\u3002<\/span><\/p>\n

<\/span><\/p>\n

if\u5224\u65b7\u5f0f\u5beb\u6cd5\uff1a<\/span><\/strong>
\n\u7bc4\u4f8b\uff1a
\n—————————————————-
\n<\/span>#!\/bin\/bash<\/span>
\nA=aaa<\/span>
\nB=aaa<\/span><\/p>\n

if [ “$A” = “$B” ]<\/span>
\nthen<\/span>
\necho “true”<\/span>
\nfi<\/span>
\n—————————————————-<\/span><\/span><\/p>\n

if \/ else\u5224\u65b7\u5f0f\u5beb\u6cd5\uff1a<\/span><\/strong>
\n\u7bc4\u4f8b\uff1a
\n—————————————————-
\n<\/span>#!\/bin\/bash<\/span>
\nA=aaa<\/span>
\nB=bbb<\/span><\/p>\n

if [ “$A” = “$B” ]<\/span>
\nthen<\/span>
\necho “true”<\/span>
\nelse<\/span>
\necho “false”<\/span>
\nfi<\/span>
\n—————————————————-<\/span><\/span><\/p>\n

if \/ else \/ else if\u5224\u65b7\u5f0f\u5beb\u6cd5\uff1a<\/span><\/strong>
\n\u7bc4\u4f8b\uff1a
\n—————————————————-
\n<\/span>#!\/bin\/bash<\/span>
\nA=aaa<\/span>
\nB=bbb<\/span><\/p>\n

if [ “$A” = “123” ]<\/span>
\nthen<\/span>
\necho “A is 123”<\/span>
\nelif [ “$B” = “456” ]<\/span>
\nthen<\/span>
\necho “B is 456”<\/span>
\nelse<\/span>
\necho “false”<\/span>
\nfi<\/span>
\n—————————————————-<\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

\u5728Linux Shell Script\u4e2d\u5e38\u6703\u900f\u904eif \/ else\u8a9e\u6cd5\u4f86\u5b8c\u6210\u4e00\u4e9b\u5224\u65b7\uff0c\u5c0f\u7de8\u4eca\u5929\u8981\u4f86\u4ecb\u7d39\u5e7e\u7a2e\u5e38\u898b … <\/p>\n

\u95b1\u8b80\u5168\u6587\u3008Linux Shell Script if \/ else\u4f7f\u7528\u65b9\u6cd5\u7bc4\u4f8b\u3009<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,379],"tags":[5990,5991,5989,2464],"class_list":["post-15308","post","type-post","status-publish","format-standard","hentry","category-itinfo","category-linux","tag-if-else","tag-if-else-else-if","tag-linux-shell","tag-script"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/posts\/15308","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/comments?post=15308"}],"version-history":[{"count":4,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/posts\/15308\/revisions"}],"predecessor-version":[{"id":15313,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/posts\/15308\/revisions\/15313"}],"wp:attachment":[{"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/media?parent=15308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/categories?post=15308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/tags?post=15308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}