{"id":491,"date":"2008-04-19T00:00:00","date_gmt":"2008-04-18T16:00:00","guid":{"rendered":"http:\/\/www.strongd.net\/?p=491"},"modified":"2011-07-15T09:35:01","modified_gmt":"2011-07-15T01:35:01","slug":"shell-%e6%af%94%e8%be%83%e4%b8%a4%e4%b8%aa%e5%ad%97%e7%ac%a6%e4%b8%b2","status":"publish","type":"post","link":"https:\/\/www.strongd.net\/?p=491","title":{"rendered":"shell \u6bd4\u8f83\u4e24\u4e2a\u5b57\u7b26\u4e32"},"content":{"rendered":"

\u6bd4\u8f83\u4e24\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u76f8\u7b49\u7684\u529e\u6cd5\u662f\uff1a<\/DIV>
\n
if [ “$test”x = “test”x ]; then<\/DIV>
\n
 <\/DIV>
\n
\u8fd9\u91cc\u7684\u5173\u952e\u6709\u51e0\u70b9\uff1a<\/DIV>
\n
1 \u4f7f\u7528\u5355\u4e2a\u7b49\u53f7<\/DIV>
\n
2 \u6ce8\u610f\u5230\u7b49\u53f7\u4e24\u8fb9\u5404\u6709\u4e00\u4e2a\u7a7a\u683c\uff1a\u8fd9\u662funix shell\u7684\u8981\u6c42<\/DIV>
\n
3 \u6ce8\u610f\u5230”$test”x\u6700\u540e\u7684x\uff0c\u8fd9\u662f\u7279\u610f\u5b89\u6392\u7684\uff0c\u56e0\u4e3a\u5f53$test\u4e3a\u7a7a\u7684\u65f6\u5019\uff0c\u4e0a\u9762\u7684\u8868\u8fbe\u5f0f\u5c31\u53d8\u6210\u4e86x = testx\uff0c\u663e\u7136\u662f\u4e0d\u76f8\u7b49\u7684\u3002\u800c\u5982\u679c\u6ca1\u6709\u8fd9\u4e2ax\uff0c\u8868\u8fbe\u5f0f\u5c31\u4f1a\u62a5\u9519\uff1a[: =: unary operator expected
<\/DIV><\/p>\n","protected":false},"excerpt":{"rendered":"

\u6bd4\u8f83\u4e24\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u76f8\u7b49\u7684\u529e\u6cd5\u662f\uff1a if [ “$test”x = “test”x ]; then   \u8fd9\u91cc\u7684\u5173\u952e\u6709\u51e0\u70b9\uff1a 1 \u4f7f\u7528\u5355\u4e2a\u7b49\u53f7 2 \u6ce8\u610f\u5230\u7b49\u53f7\u4e24\u8fb9\u5404\u6709\u4e00\u4e2a\u7a7a\u683c\uff1a\u8fd9\u662funix shell\u7684\u8981\u6c42 3 \u6ce8\u610f\u5230”$test”x\u6700\u540e\u7684x\uff0c\u8fd9\u662f\u7279\u610f\u5b89\u6392\u7684\uff0c\u56e0\u4e3a\u5f53$test\u4e3a\u7a7a\u7684\u65f6\u5019\uff0c\u4e0a\u9762\u7684\u8868\u8fbe\u5f0f\u5c31\u53d8\u6210\u4e86x = testx\uff0c\u663e\u7136\u662f\u4e0d\u76f8\u7b49\u7684\u3002\u800c\u5982\u679c\u6ca1\u6709\u8fd9\u4e2ax\uff0c\u8868\u8fbe\u5f0f\u5c31\u4f1a\u62a5\u9519\uff1a[: =: unary operator expected<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[101],"class_list":["post-491","post","type-post","status-publish","format-standard","hentry","category-linux","tag-shell"],"_links":{"self":[{"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/posts\/491","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.strongd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=491"}],"version-history":[{"count":1,"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/posts\/491\/revisions"}],"predecessor-version":[{"id":878,"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/posts\/491\/revisions\/878"}],"wp:attachment":[{"href":"https:\/\/www.strongd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=491"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.strongd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=491"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.strongd.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}