mirror of
https://github.com/torappinfo/uweb.git
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109 lines
4.9 KiB
HTML
109 lines
4.9 KiB
HTML
<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<link rel="stylesheet" href="../style.css" type="text/css" />
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<title>cron</title>
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<script type="text/javascript">
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function findLang(){
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let href = location.href;
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for(let i=href.length-1;i>0;i--){
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if('/'==href.charAt(i) && '/'==href.charAt(i-3))
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return i;
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}
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return 0;
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}
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function nav2(page){
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let i = findLang();
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location.href = location.href.substring(0,i+1)+page;
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}
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function nav2Lang(lang){
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let i = findLang();
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let href = location.href;
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location.href = location.href.substring(0,i-2)+lang+location.href.substring(i);
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}
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</script>
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</head>
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<body>
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<header class='header'>
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<a class="logo" href="javascript:void(0)" onclick="return nav2('index.html')">Home</a> <a class="logo" href="javascript:void(0)" onclick="return nav2('tags/index.html')">Tags</a>
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<a class="logo" href="javascript:void(0)" onclick="return nav2Lang('zh')">简体中文</a>
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<nav>
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</nav>
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</header>
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<br />
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<div class="container">
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<h1 class="title">cron
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<br>
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<span class="subtitle"></span>
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</h1>
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<ul class="tags">
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</ul>
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<h4 id="crontab-with-enhanced-semantics">crontab (with enhanced semantics)</h4>
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<p>For performance, the file "crontab" uses single space as field separator. Letters are not suppored currently. So use "1" for "January" and 2 for "Tuesday" etc.</p>
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<p>The sixth field in crontab file has the format of <a href="../links/index.html">internal links</a>. Specifically, "c:" to execute the following commands in termux and "!" to execute commands directly.</p>
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<p>To make crontab more powerful, we changed the semantics as follows:<br>
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The day of a command's execution can be specified by two fields — day of month, and day of week. The command will be run when <span style="color:red">both</span> fields matche the current time.</p>
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<p>Note (the original crantab semantics):<br>
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The day of a command's execution can be specified by two fields — day of month, and day of week. If both fields are restricted (i.e., aren't *), the command will be run when either field matches the current time. For example, ``30 4 1,15 * 5'' would cause a command to be run at 4:30 am on the 1st and 15th of each month, plus every Friday.</p>
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<h4 id="tcron">tcron</h4>
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<p>With the option "custom file handling" enabled, "default.rc" runs as shell script at uweb launching time and "default.rc2" runs whenever uweb becomes foreground.</p>
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<p>Use tcron (<a href="i:0bhttps://fastly.jsdelivr.net/gh/torappinfo/uwebjs/bin/tcron.tgz">Click to install</a>) with "default.rc" or "default.rc2".</p>
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<p>usage: tcron logfile command hours [timezone delay_sec elsecommand]<br>
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execute "command" during time interval once.<br>
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where logfile modification time must be updated if "command" runs successfully.</p>
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<p>hours: If positive, then each day is divided into multiple intervals (unit: hour), and in each interval, the "command" runs only once.<br>
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If negative, then the unit is minute.<br>
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hours could be also in "hh:mm-hh:mm,..." format. Ex. "6:00-8:30,11:00-13:00,5:30-6:30".<br>
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timezone: an integer, default to be "8" for Beijing China (UTC+8). "0" for Greenwich UK (UTC+0).<br>
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delay_sec: execute "command" after "delay_sec" seconds.<br>
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elsecommand: executed whenever "command" not run.</p>
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<p>ex:<br>
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set PATH=/system/bin:/data/data/info.torapp.uweb/files/bin<br>
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#Empty the folder "baidu" every 30 days.<br>
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tcron /sdcard/b "rm -rf /sdcard/baidu/*;toybox touch /sdcard/b" 720</p>
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<p><a target="_self" href="i:0hdefault.rc:../searchurl/txt/default.rc">Install example default.rc file for termux</a></p>
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</div>
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<p>Last Modified: 25 October 2023<br>
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crontab support<br>
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<pre></pre>
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</p>
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<script>
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if(location.href.indexOf("/zh/")>0){
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var script = document.createElement("script");
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script.type = "text/javascript";
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script.src = "../../js/gissues.js";
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script.setAttribute("repo","jamesfengcao/uweb");
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script.setAttribute("issue-term","title");
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script.setAttribute("theme","github-light");
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script.async = true;
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document.body.appendChild(script);
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}
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</script>
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<script id='jsgiscus'
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src='https://giscus.app/client.js'
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data-repo="torappinfo/uweb"
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data-repo-id="MDEwOlJlcG9zaXRvcnkzMDIyMDU3MjE="
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data-category="Announcements"
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data-category-id="DIC_kwDOEgNLGc4CQjsh"
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data-mapping="title"
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data-strict="0"
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data-reactions-enabled="1"
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data-emit-metadata="0"
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data-input-position="top"
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data-theme="light"
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data-lang="en"
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data-loading="lazy"
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crossorigin="anonymous" async>
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</script>
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</body>
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</html>
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