{"id":359,"date":"2018-12-19T19:09:16","date_gmt":"2018-12-19T11:09:16","guid":{"rendered":"https:\/\/fick707.com\/?p=359"},"modified":"2018-12-19T19:09:16","modified_gmt":"2018-12-19T11:09:16","slug":"shell-d-z","status":"publish","type":"post","link":"https:\/\/fick707.com\/?p=359","title":{"rendered":"Shell\u4e2d\u5224\u65ad\u8bed\u53e5if\u4e2d-z\u81f3-d\u7684\u610f\u601d"},"content":{"rendered":"\n<pre class=\"wp-block-preformatted\">\u8f6c\u8f7d\u81ea\uff1a<a href=\"https:\/\/www.cnblogs.com\/coffy\/p\/5748292.html\">https:\/\/www.cnblogs.com\/coffy\/p\/5748292.html<\/a><br><br>[ -a FILE ] \u5982\u679c FILE \u5b58\u5728\u5219\u4e3a\u771f\u3002<br>[ -b FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u662f\u4e00\u4e2a\u5757\u7279\u6b8a\u6587\u4ef6\u5219\u4e3a\u771f\u3002<br>[ -c FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u662f\u4e00\u4e2a\u5b57\u7279\u6b8a\u6587\u4ef6\u5219\u4e3a\u771f\u3002<br>[ -d FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u662f\u4e00\u4e2a\u76ee\u5f55\u5219\u4e3a\u771f\u3002<br>[ -e FILE ] \u5982\u679c FILE \u5b58\u5728\u5219\u4e3a\u771f\u3002<br>[ -f FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u662f\u4e00\u4e2a\u666e\u901a\u6587\u4ef6\u5219\u4e3a\u771f\u3002<br>[ -g FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u5df2\u7ecf\u8bbe\u7f6e\u4e86SGID\u5219\u4e3a\u771f\u3002<br>[ -h FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u662f\u4e00\u4e2a\u7b26\u53f7\u8fde\u63a5\u5219\u4e3a\u771f\u3002<br>[ -k FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u5df2\u7ecf\u8bbe\u7f6e\u4e86\u7c98\u5236\u4f4d\u5219\u4e3a\u771f\u3002<br>[ -p FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u662f\u4e00\u4e2a\u540d\u5b57\u7ba1\u9053(F\u5982\u679cO)\u5219\u4e3a\u771f\u3002<br>[ -r FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u662f\u53ef\u8bfb\u7684\u5219\u4e3a\u771f\u3002<br>[ -s FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u5927\u5c0f\u4e0d\u4e3a0\u5219\u4e3a\u771f\u3002<br>[ -t FD ] \u5982\u679c\u6587\u4ef6\u63cf\u8ff0\u7b26 FD \u6253\u5f00\u4e14\u6307\u5411\u4e00\u4e2a\u7ec8\u7aef\u5219\u4e3a\u771f\u3002<br>[ -u FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u8bbe\u7f6e\u4e86SUID (set user ID)\u5219\u4e3a\u771f\u3002<br>[ -w FILE ] \u5982\u679c FILE \u5982\u679c FILE \u5b58\u5728\u4e14\u662f\u53ef\u5199\u7684\u5219\u4e3a\u771f\u3002<br>[ -x FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u662f\u53ef\u6267\u884c\u7684\u5219\u4e3a\u771f\u3002<br>[ -O FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u5c5e\u6709\u6548\u7528\u6237ID\u5219\u4e3a\u771f\u3002<br>[ -G FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u5c5e\u6709\u6548\u7528\u6237\u7ec4\u5219\u4e3a\u771f\u3002<br>[ -L FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u662f\u4e00\u4e2a\u7b26\u53f7\u8fde\u63a5\u5219\u4e3a\u771f\u3002<br>[ -N FILE ] \u5982\u679c FILE \u5b58\u5728 and has been mod\u5982\u679cied since it was last read\u5219\u4e3a\u771f\u3002<br>[ -S FILE ] \u5982\u679c FILE \u5b58\u5728\u4e14\u662f\u4e00\u4e2a\u5957\u63a5\u5b57\u5219\u4e3a\u771f\u3002<br>[ FILE1 -nt FILE2 ] \u5982\u679c FILE1 has been changed more recently than FILE2, or \u5982\u679c FILE1 exists and FILE2 does not\u5219\u4e3a\u771f\u3002<br>[ FILE1 -ot FILE2 ] \u5982\u679c FILE1 \u6bd4 FILE2 \u8981\u8001, \u6216\u8005 FILE2 \u5b58\u5728\u4e14 FILE1 \u4e0d\u5b58\u5728\u5219\u4e3a\u771f\u3002<br>[ FILE1 -ef FILE2 ] \u5982\u679c FILE1 \u548c FILE2 \u6307\u5411\u76f8\u540c\u7684\u8bbe\u5907\u548c\u8282\u70b9\u53f7\u5219\u4e3a\u771f\u3002<br>[ -o OPTIONNAME ] \u5982\u679c shell\u9009\u9879 \u201cOPTIONNAME\u201d \u5f00\u542f\u5219\u4e3a\u771f\u3002<br>[ -z STRING ] \u201cSTRING\u201d \u7684\u957f\u5ea6\u4e3a\u96f6\u5219\u4e3a\u771f\u3002<br>[ -n STRING ] or [ STRING ] \u201cSTRING\u201d \u7684\u957f\u5ea6\u4e3a\u975e\u96f6 non-zero\u5219\u4e3a\u771f\u3002<br>[ STRING1 == STRING2 ] \u5982\u679c2\u4e2a\u5b57\u7b26\u4e32\u76f8\u540c\u3002 \u201c=\u201d may be used instead of \u201c==\u201d for strict POSIX compliance\u5219\u4e3a\u771f\u3002<br>[ STRING1 != STRING2 ] \u5982\u679c\u5b57\u7b26\u4e32\u4e0d\u76f8\u7b49\u5219\u4e3a\u771f\u3002<br>[ STRING1 &lt; STRING2 ] \u5982\u679c \u201cSTRING1\u201d sorts before \u201cSTRING2\u201d lexicographically in the current locale\u5219\u4e3a\u771f\u3002<br>[ STRING1 > STRING2 ] \u5982\u679c \u201cSTRING1\u201d sorts after \u201cSTRING2\u201d lexicographically in the current locale\u5219\u4e3a\u771f\u3002<br>[ ARG1 OP ARG2 ] \u201cOP\u201d is one of -eq, -ne, -lt, -le, -gt or -ge. These arithmetic binary operators return true if \u201cARG1\u201d is equal to, not equal to, less than, less than or equal to, greater than, or greater than or equal to \u201cARG2\u201d, respectively. \u201cARG1\u201d and \u201cARG2\u201d are integers.<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u8f6c\u8f7d\u81ea\uff1ahttps:\/\/www.cnblogs.com\/coffy\/p\/5748292.html[  &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"series":[],"class_list":["post-359","post","type-post","status-publish","format-standard","hentry","category-programmers"],"_links":{"self":[{"href":"https:\/\/fick707.com\/index.php?rest_route=\/wp\/v2\/posts\/359"}],"collection":[{"href":"https:\/\/fick707.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fick707.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fick707.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fick707.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=359"}],"version-history":[{"count":1,"href":"https:\/\/fick707.com\/index.php?rest_route=\/wp\/v2\/posts\/359\/revisions"}],"predecessor-version":[{"id":360,"href":"https:\/\/fick707.com\/index.php?rest_route=\/wp\/v2\/posts\/359\/revisions\/360"}],"wp:attachment":[{"href":"https:\/\/fick707.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fick707.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=359"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fick707.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=359"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/fick707.com\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}