{"id":15302,"date":"2023-03-19T11:37:15","date_gmt":"2023-03-19T03:37:15","guid":{"rendered":"https:\/\/ailog.tw\/lifelog\/?p=15302"},"modified":"2023-03-19T12:33:34","modified_gmt":"2023-03-19T04:33:34","slug":"linux-script-eq","status":"publish","type":"post","link":"https:\/\/ailog.tw\/lifelog\/2023\/03\/19\/linux-script-eq\/","title":{"rendered":"Linux Shell Script\u5e38\u7528\u7684\u6574\u6578\u689d\u4ef6\u5224\u65ad\u4ecb\u7d39"},"content":{"rendered":"

\u5728linux script\u4e2d\u96e3\u514d\u6703\u9700\u8981\u7528\u5230\u4e00\u4e9b\u6574\u6578\u5224\u65b7\uff0c\u56e0\u6b64\u96e3\u514d\u6703\u7528\u5230\u300ceq\u3001ne\u3001gt\u3001lt\u3001ge\u3001le\u300d\u9019\u4e9b\u6574\u6578\u5224\u65b7\u6216\u5176\u4ed6\u7684\u5b57\u4e32\u5224\u65b7\u689d\u4ef6\uff0c\u5c0f\u7de8\u4eca\u5929\u5c31\u8981\u4f86\u7c21\u6613\u7684\u8aaa\u660e\u9019\u4e9b\u5224\u65b7\u689d\u4ef6\u4f7f\u7528\u65b9\u6cd5\u3002<\/span><\/p>\n

[\u6574\u6578\u5224\u65b7]<\/strong><\/span>
\n\u300c-eq\u300d\uff1a<\/span><\/strong>
\n\u6e2c\u8a66\u5169\u500b\u6574\u6578\u662f\u5426\u300c\u76f8\u7b49\u300d<\/span>\u3002
\n\u7bc4\u4f8b\uff1a
\nA \u7b49\u65bc B \u56de\u50b3 true
\n—————————————————-
\n<\/span>#!\/bin\/bash<\/span>
\nA=10<\/span>
\nB=10<\/span><\/p>\n

if [ “$A” -eq “$B” ]<\/span>
\nthen<\/span>
\necho “true”<\/span>
\nelse<\/span>
\necho “false”<\/span>
\nfi<\/span>
\n—————————————————-
\n<\/span>
\n\u300c-ne\u300d\uff1a<\/span><\/strong>
\n\u6e2c\u8a66\u5169\u500b\u6574\u6578\u662f\u5426\u300c\u4e0d\u7b49\u300d<\/span>\u3002
\n<\/span>\u7bc4\u4f8b\uff1a
\nA \u4e0d\u7b49\u65bc B \u56de\u50b3 true
\n—————————————————-
\n<\/span>#!\/bin\/bash<\/span>
\nA=10<\/span>
\nB=20<\/span><\/p>\n

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

\u300c-gt\u300d\uff1a<\/span><\/strong>
\n\u6e2c\u8a66\u4e00\u500b\u6574\u6578\u662f\u5426\u300c\u5927\u65bc\u300d<\/span>\u53e6\u4e00\u500b\u6574\u6578\u3002
\n<\/span>\u7bc4\u4f8b\uff1a
\nA \u5927\u65bc B \u56de\u50b3 true
\n—————————————————-
\n<\/span>#!\/bin\/bash<\/span>
\nA=20<\/span>
\nB=10<\/span><\/p>\n

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

\u300c-lt \u300d\uff1a<\/span><\/strong>
\n\u6e2c\u8a66\u4e00\u500b\u6574\u6578\u662f\u5426\u300c\u5c0f\u65bc\u300d<\/span>\u53e6\u4e00\u500b\u6574\u6578\u3002
\n<\/span>\u7bc4\u4f8b\uff1a
\nA \u5c0f\u65bc B \u56de\u50b3 true
\n—————————————————-
\n<\/span>#!\/bin\/bash<\/span>
\nA=10<\/span>
\nB=20<\/span><\/p>\n

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

\u300c-ge\u300d\uff1a<\/span><\/strong>
\n\u6e2c\u8a66\u4e00\u500b\u6574\u6578\u662f\u5426\u300c\u5927\u65bc\u6216\u7b49\u65bc\u300d<\/span>\u53e6\u4e00\u500b\u6574\u6578\u3002
\n<\/span>\u7bc4\u4f8b\uff1a
\nA \u5927\u65bc\u6216\u7b49\u65bc B \u56de\u50b3 true
\n—————————————————-
\n<\/span>#!\/bin\/bash<\/span>
\nA=20<\/span>
\nB=10<\/span><\/p>\n

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

\u300c-le\u300d\uff1a<\/span><\/strong>
\n\u6e2c\u8a66\u4e00\u500b\u6574\u6578\u662f\u5426\u300c\u5c0f\u65bc\u6216\u7b49\u65bc\u300d<\/span>\u53e6\u4e00\u500b\u6574\u6578\u3002
\n<\/span>\u7bc4\u4f8b\uff1a
\nA \u5c0f\u65bc\u6216\u7b49\u65bc B \u56de\u50b3 true
\n—————————————————-
\n<\/span>#!\/bin\/bash<\/span>
\nA=10<\/span>
\nB=20<\/span><\/p>\n

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

[\u5b57\u4e32\u5224\u65b7]
\n<\/strong><\/span>\u300c=\u300d\uff1a<\/span><\/strong>
\n\u6e2c\u8a66\u4e00\u500b\u5b57\u4e32\u662f\u5426\u300c\u7b49\u65bc\u300d<\/span>\u53e6\u4e00\u500b\u5b57\u4e32\u3002
\n<\/span>\u7bc4\u4f8b\uff1a
\nA \u7b49\u65bc B \u56de\u50b3 true
\n—————————————————-
\n<\/span>#!\/bin\/bash<\/span>
\nA=aaa<\/span>
\nB=aaa<\/span><\/p>\n

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

\u300c!=\u300d\uff1a<\/span><\/strong>
\n\u6e2c\u8a66\u4e00\u500b\u5b57\u4e32\u662f\u5426\u300c\u4e0d\u7b49\u65bc\u300d<\/span>\u53e6\u4e00\u500b\u5b57\u4e32\u3002
\n<\/span>\u7bc4\u4f8b\uff1a
\nA \u4e0d\u7b49\u65bc B \u56de\u50b3 true
\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><\/p>\n

\u300c-z\u300d\uff1a<\/span><\/strong>
\n\u6e2c\u8a66\u4e00\u500b\u5b57\u4e32\u662f\u5426\u70ba\u300cnull\u300d<\/span>\u3002
\n<\/span>\u7bc4\u4f8b\uff1a
\nA \u300c\u7b49\u65bcNull<\/span>\u300d\u56de\u50b3 true
\n—————————————————-
\n<\/span><\/span>#!\/bin\/bash
\nA=””<\/p>\n

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

[\u6a94\u6848\/\u76ee\u9304\u76f8\u95dc\u5224\u65b7]
\n<\/strong><\/span>\u300c-d\u300d\uff1a<\/span><\/strong>
\n\u6e2c\u8a66\u662f\u5426\u70ba\u300c\u76ee\u9304\u300d<\/span>\u3002
\n<\/span>\u7bc4\u4f8b\uff1a
\n\u8b8a\u6578A \u70ba\u300c\u76ee\u9304\u300d<\/span>\u56de\u50b3 true
\n—————————————————-
\n<\/span><\/span>#!\/bin\/bash
\nA=”\/home”<\/p>\n

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

\u300c-f\u300d\uff1a<\/span><\/strong>
\n\u6e2c\u8a66\u662f\u5426\u70ba\u300c\u6a94\u6848\u300d<\/span>\u3002
\n<\/span>\u7bc4\u4f8b\uff1a
\n\u8b8a\u6578A\u70ba \u300c\u6a94\u6848\u300d<\/span>\u56de\u50b3 true
\n—————————————————-
\n<\/span><\/span>#!\/bin\/bash
\nA=”\/usr\/bin\/cat”<\/p>\n

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

\u300c-r\u300d\uff1a<\/span><\/strong>
\n\u6e2c\u8a66\u6a94\u6848\u662f\u5426\u70ba\u300c\u53ef\u8b80\u300d<\/span>\u3002
\n<\/span>\u7bc4\u4f8b\uff1a
\n\u8b8a\u6578A\u7684\u6a94\u6848\u70ba \u300c\u53ef\u8b80\u300d<\/span>\u56de\u50b3 true
\n—————————————————-
\n<\/span><\/span>#!\/bin\/bash
\nA=”\/usr\/bin\/cat”<\/p>\n

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

\u300c-s\u300d\uff1a<\/span><\/strong>
\n\u6e2c\u8a66\u6a94\u6848\u662f\u5426\u70ba\u300c\u5bb9\u91cf\u5927\u65bc0\u300d<\/span>\u3002
\n<\/span>\u7bc4\u4f8b\uff1a
\n\u8b8a\u6578A\u7684\u6a94\u6848\u5bb9\u91cf\u5927\u5c0f\u70ba \u300c\u5927\u65bc0\u300d<\/span>\u56de\u50b3 true(\u975e\u7a7a\u6a94\u6848\u7684\u610f\u601d)
\n—————————————————-
\n<\/span><\/span>#!\/bin\/bash
\nA=”\/usr\/bin\/cat”<\/p>\n

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

\u300c-w\u300d\uff1a<\/span><\/strong>
\n\u6e2c\u8a66\u6a94\u6848\u662f\u5426\u70ba\u300c\u53ef\u5beb\u300d<\/span>\u3002
\n<\/span>\u7bc4\u4f8b\uff1a
\n\u8b8a\u6578A\u7684\u6a94\u6848\u70ba \u300c\u53ef\u5beb\u300d<\/span>\u56de\u50b3 true
\n—————————————————-
\n<\/span><\/span>#!\/bin\/bash
\nA=”\/tmp\/testfile.sh”<\/p>\n

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

\u300c-x\u300d\uff1a<\/span><\/strong>
\n\u6e2c\u8a66\u6a94\u6848\u662f\u5426\u70ba\u300c\u53ef\u57f7\u884c\u300d<\/span>\u3002
\n<\/span>\u7bc4\u4f8b\uff1a
\n\u8b8a\u6578A\u7684\u6a94\u6848\u70ba \u300c\u53ef\u57f7\u884c\u300d<\/span>\u56de\u50b3 true
\n—————————————————-
\n<\/span><\/span>#!\/bin\/bash
\nA=”\/tmp\/testfile.sh”<\/p>\n

if [ -x $A ]
\nthen
\necho “true”
\nelse
\necho “false”
\nfi
\n—————————————————-<\/span>
\n<\/strong><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

\u5728linux script\u4e2d\u96e3\u514d\u6703\u9700\u8981\u7528\u5230\u4e00\u4e9b\u6574\u6578\u5224\u65b7\uff0c\u56e0\u6b64\u96e3\u514d\u6703\u7528\u5230\u300ceq\u3001ne\u3001gt\u3001lt\u3001ge\u3001le\u300d\u9019 … <\/p>\n

\u95b1\u8b80\u5168\u6587\u3008Linux Shell Script\u5e38\u7528\u7684\u6574\u6578\u689d\u4ef6\u5224\u65ad\u4ecb\u7d39\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":[5983,5987,5985,5988,121,5986,5984,2464,3352,5981,4355,5982],"class_list":["post-15302","post","type-post","status-publish","format-standard","hentry","category-itinfo","category-linux","tag-eq","tag-ge","tag-gt","tag-le","tag-linux","tag-lt","tag-ne","tag-script","tag-3352","tag-5981","tag-4355","tag-5982"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/posts\/15302","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=15302"}],"version-history":[{"count":13,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/posts\/15302\/revisions"}],"predecessor-version":[{"id":15320,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/posts\/15302\/revisions\/15320"}],"wp:attachment":[{"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/media?parent=15302"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/categories?post=15302"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/tags?post=15302"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}