{"id":166,"date":"2023-11-30T16:35:58","date_gmt":"2023-11-30T08:35:58","guid":{"rendered":"https:\/\/www.kz-hub.tech\/?p=166"},"modified":"2023-11-30T16:35:58","modified_gmt":"2023-11-30T08:35:58","slug":"linux-%e4%b8%ad%e7%9a%84%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%88%aa%e5%8f%96","status":"publish","type":"post","link":"https:\/\/www.kz-hub.tech\/index.php\/2023\/11\/30\/linux-%e4%b8%ad%e7%9a%84%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%88%aa%e5%8f%96\/","title":{"rendered":"Linux \u4e2d\u7684\u5b57\u7b26\u4e32\u622a\u53d6"},"content":{"rendered":"<p>\u5047\u8bbe\u6709\u53d8\u91cf var=<a href=\"http:\/\/www.aaa.com\/123.html\">http:\/\/www.aaa.com\/123.html<\/a><\/p>\n<h5>1. # \u53f7\u622a\u53d6\uff0c\u5220\u9664\u5de6\u8fb9\u5b57\u7b26\uff0c\u4fdd\u7559\u53f3\u8fb9\u5b57\u7b26\u3002<\/h5>\n<pre><code>echo ${var#*\/\/}<\/code><\/pre>\n<p>\u5176\u4e2d var \u662f\u53d8\u91cf\u540d\uff0c# \u53f7\u662f\u8fd0\u7b97\u7b26\uff0c*\/\/ \u8868\u793a\u4ece\u5de6\u8fb9\u5f00\u59cb\u5220\u9664\u7b2c\u4e00\u4e2a \/\/ \u53f7\u53ca\u5de6\u8fb9\u7684\u6240\u6709\u5b57\u7b26<\/p>\n<p>\u5373\u5220\u9664 http:\/\/<\/p>\n<p>\u7ed3\u679c\u662f \uff1awww.aaa.com\/123.html<\/p>\n<h5>2. ## \u53f7\u622a\u53d6\uff0c\u5220\u9664\u5de6\u8fb9\u5b57\u7b26\uff0c\u4fdd\u7559\u53f3\u8fb9\u5b57\u7b26<\/h5>\n<pre><code>echo ${var##*\/}<\/code><\/pre>\n<h2>*\/ \u8868\u793a\u4ece\u5de6\u8fb9\u5f00\u59cb\u5220\u9664\u6700\u540e\uff08\u6700\u53f3\u8fb9\uff09\u4e00\u4e2a \/ \u53f7\u53ca\u5de6\u8fb9\u7684\u6240\u6709\u5b57\u7b26<\/h2>\n<p>\u5373\u5220\u9664 <a href=\"http:\/\/www.aaa.com\/\">http:\/\/www.aaa.com\/<\/a><\/p>\n<p>\u7ed3\u679c\u662f 123.html<\/p>\n<h5>3. %\u53f7\u622a\u53d6\uff0c\u5220\u9664\u53f3\u8fb9\u5b57\u7b26\uff0c\u4fdd\u7559\u5de6\u8fb9\u5b57\u7b26<\/h5>\n<pre><code>echo ${var%\/*}<\/code><\/pre>\n<p>%\/* \u8868\u793a\u4ece\u53f3\u8fb9\u5f00\u59cb\uff0c\u5220\u9664\u7b2c\u4e00\u4e2a \/ \u53f7\u53ca\u53f3\u8fb9\u7684\u5b57\u7b26<\/p>\n<p>\u7ed3\u679c\u662f\uff1a<a href=\"http:\/\/www.aaa.com\">http:\/\/www.aaa.com<\/a><\/p>\n<h5>4. %% \u53f7\u622a\u53d6\uff0c\u5220\u9664\u53f3\u8fb9\u5b57\u7b26\uff0c\u4fdd\u7559\u5de6\u8fb9\u5b57\u7b26<\/h5>\n<pre><code>echo ${var%%\/*}<\/code><\/pre>\n<p>%%\/* \u8868\u793a\u4ece\u53f3\u8fb9\u5f00\u59cb\uff0c\u5220\u9664\u6700\u540e\uff08\u6700\u5de6\u8fb9\uff09\u4e00\u4e2a \/ \u53f7\u53ca\u53f3\u8fb9\u7684\u5b57\u7b26<\/p>\n<p>\u7ed3\u679c\u662f\uff1ahttp:<\/p>\n<h5>5. \u4ece\u5de6\u8fb9\u7b2c\u51e0\u4e2a\u5b57\u7b26\u5f00\u59cb\uff0c\u53ca\u5b57\u7b26\u7684\u4e2a\u6570<\/h5>\n<pre><code>echo ${var:0:5}<\/code><\/pre>\n<h5>6. \u4ece\u5de6\u8fb9\u7b2c\u51e0\u4e2a\u5b57\u7b26\u5f00\u59cb\uff0c\u4e00\u76f4\u5230\u7ed3\u675f\u3002<\/h5>\n<pre><code>echo ${var:7}<\/code><\/pre>\n<p>\u5176\u4e2d\u7684 7 \u8868\u793a\u5de6\u8fb9\u7b2c8\u4e2a\u5b57\u7b26\u5f00\u59cb\uff0c\u4e00\u76f4\u5230\u7ed3\u675f\u3002<\/p>\n<p>\u7ed3\u679c\u662f \uff1awww.aaa.com\/123.html<\/p>\n<h5>7. \u4ece\u53f3\u8fb9\u7b2c\u51e0\u4e2a\u5b57\u7b26\u5f00\u59cb\uff0c\u53ca\u5b57\u7b26\u7684\u4e2a\u6570<\/h5>\n<pre><code>echo ${var:0-7:3}<\/code><\/pre>\n<p>\u5176\u4e2d\u7684 0-7 \u8868\u793a\u53f3\u8fb9\u7b97\u8d77\u7b2c\u4e03\u4e2a\u5b57\u7b26\u5f00\u59cb\uff0c3 \u8868\u793a\u5b57\u7b26\u7684\u4e2a\u6570\u3002<\/p>\n<p>\u7ed3\u679c\u662f\uff1a123<\/p>\n<h5>8. \u4ece\u53f3\u8fb9\u7b2c\u51e0\u4e2a\u5b57\u7b26\u5f00\u59cb\uff0c\u4e00\u76f4\u5230\u7ed3\u675f\u3002<\/h5>\n<pre><code>echo ${var:0-7}<\/code><\/pre>\n<p>\u8868\u793a\u4ece\u53f3\u8fb9\u7b2c\u4e03\u4e2a\u5b57\u7b26\u5f00\u59cb\uff0c\u4e00\u76f4\u5230\u7ed3\u675f\u3002<\/p>\n<p>\u7ed3\u679c\u662f\uff1a123.html<\/p>\n<p>\u6ce8\uff1a\uff08\u5de6\u8fb9\u7684\u7b2c\u4e00\u4e2a\u5b57\u7b26\u662f\u7528 0 \u8868\u793a\uff0c\u53f3\u8fb9\u7684\u7b2c\u4e00\u4e2a\u5b57\u7b26\u7528 0-1 \u8868\u793a<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5047\u8bbe\u6709\u53d8\u91cf var=http:\/\/www.aaa.com\/123.html 1. # \u53f7\u622a\u53d6\uff0c\u5220\u9664\u5de6\u8fb9\u5b57\u7b26\uff0c\u4fdd&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-166","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.kz-hub.tech\/index.php\/wp-json\/wp\/v2\/posts\/166","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kz-hub.tech\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kz-hub.tech\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kz-hub.tech\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kz-hub.tech\/index.php\/wp-json\/wp\/v2\/comments?post=166"}],"version-history":[{"count":1,"href":"https:\/\/www.kz-hub.tech\/index.php\/wp-json\/wp\/v2\/posts\/166\/revisions"}],"predecessor-version":[{"id":167,"href":"https:\/\/www.kz-hub.tech\/index.php\/wp-json\/wp\/v2\/posts\/166\/revisions\/167"}],"wp:attachment":[{"href":"https:\/\/www.kz-hub.tech\/index.php\/wp-json\/wp\/v2\/media?parent=166"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kz-hub.tech\/index.php\/wp-json\/wp\/v2\/categories?post=166"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kz-hub.tech\/index.php\/wp-json\/wp\/v2\/tags?post=166"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}