{"id":317,"date":"2016-11-10T00:56:52","date_gmt":"2016-11-09T16:56:52","guid":{"rendered":"http:\/\/blog.haostudio.net\/hwp\/?p=317"},"modified":"2017-07-25T00:00:06","modified_gmt":"2017-07-24T16:00:06","slug":"shell-tips-%e4%bd%bf%e7%94%a8%e8%ae%8a%e6%95%b8%e4%be%86%e6%8e%a7%e5%88%b6%e8%bf%b4%e5%9c%88%e7%9a%84%e6%ac%a1%e6%95%b8","status":"publish","type":"post","link":"https:\/\/blog.haostudio.net\/hwp\/shell-tips-%e4%bd%bf%e7%94%a8%e8%ae%8a%e6%95%b8%e4%be%86%e6%8e%a7%e5%88%b6%e8%bf%b4%e5%9c%88%e7%9a%84%e6%ac%a1%e6%95%b8\/","title":{"rendered":"[Shell Tips] \u4f7f\u7528\u8b8a\u6578\u4f86\u63a7\u5236\u8ff4\u5708\u7684\u6b21\u6578"},"content":{"rendered":"<!--more-->\n<h3>\u4f7f\u7528\u8b8a\u6578\u4f86\u63a7\u5236\u8ff4\u5708\u7684\u6b21\u6578<\/h3>\n<p>\u76f4\u63a5\u770b\u7bc4\u4f8b\u6bd4\u8f03\u5feb:<\/p>\n<pre><code>#!\/bin\/bash\n1. \u9663\u5217\u5171\u67093\u500b\u5143\u7d20\narr=(&quot;aaa&quot; &quot;bbb&quot; &quot;ccc&quot;)\n\n1. \u7b97\u51fa\u9663\u5217\u7684MAX Index\nmaxidx=$((${#arr[@]}-1))\n\n1. \u8ff4\u5708\nfor i in $(eval echo {0..$maxidx}); do\n  echo &quot;i=$i&quot;\n  echo &quot;arr[${i}]=${arr[${i}]}&quot;\ndone\n<\/code><\/pre>\n<p>\u57f7\u884c\u7d50\u679c\u5982\u4e0b:<\/p>\n<pre><code>i=0\narr[0]=aaa\ni=1\narr[1]=bbb\ni=2\narr[2]=ccc\n<\/code><\/pre>\n<p>\u91cd\u9ede\u5c31\u662f\u5728\u9019\u884c\n<code>for i in $(eval echo {0..$maxidx})<\/code><\/p>\n<hr \/>\n<p>\u53c3\u8003\u4f86\u6e90: <a href=\"http:\/\/stackoverflow.com\/questions\/169511\/how-do-i-iterate-over-a-range-of-numbers-defined-by-variables-in-bash\">How do I iterate over a range of numbers defined by variables in Bash?<\/a><\/p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[89],"tags":[61],"class_list":["post-317","post","type-post","status-publish","format-standard","hentry","category-shell-script","tag-shell-script"],"_links":{"self":[{"href":"https:\/\/blog.haostudio.net\/hwp\/wp-json\/wp\/v2\/posts\/317","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.haostudio.net\/hwp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.haostudio.net\/hwp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.haostudio.net\/hwp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.haostudio.net\/hwp\/wp-json\/wp\/v2\/comments?post=317"}],"version-history":[{"count":4,"href":"https:\/\/blog.haostudio.net\/hwp\/wp-json\/wp\/v2\/posts\/317\/revisions"}],"predecessor-version":[{"id":372,"href":"https:\/\/blog.haostudio.net\/hwp\/wp-json\/wp\/v2\/posts\/317\/revisions\/372"}],"wp:attachment":[{"href":"https:\/\/blog.haostudio.net\/hwp\/wp-json\/wp\/v2\/media?parent=317"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.haostudio.net\/hwp\/wp-json\/wp\/v2\/categories?post=317"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.haostudio.net\/hwp\/wp-json\/wp\/v2\/tags?post=317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}