diff --git a/en/_posts/index.xml b/en/_posts/index.xml
index 2d0067b..bbe0483 100644
--- a/en/_posts/index.xml
+++ b/en/_posts/index.xml
@@ -6,7 +6,20 @@
     <description>Recent content in _posts on uweb browser: unlimited power</description>
     <generator>Hugo -- gohugo.io</generator>
     <language>en</language>
-    <lastBuildDate>Tue, 11 Apr 2023 00:00:00 +0000</lastBuildDate><atom:link href="/en/_posts/index.xml" rel="self" type="application/rss+xml" />
+    <lastBuildDate>Wed, 25 Oct 2023 00:00:00 +0000</lastBuildDate><atom:link href="/en/_posts/index.xml" rel="self" type="application/rss+xml" />
+    <item>
+      <title>cron</title>
+      <link>/en/tcron/</link>
+      <pubDate>Wed, 25 Oct 2023 00:00:00 +0000</pubDate>
+      
+      <guid>/en/tcron/</guid>
+      <description>crontab For performance, the file &amp;quot;crontab&amp;quot; uses single space as field separator. Letters are not suppored currently. So use &amp;quot;1&amp;quot; for &amp;quot;January&amp;quot; and 2 for &amp;quot;Tuesday&amp;quot; etc.
+tcron With the option &amp;quot;custom file handling&amp;quot; enabled, &amp;quot;default.rc&amp;quot; runs as shell script at uweb launching time and &amp;quot;default.rc2&amp;quot; runs whenever uweb becomes foreground.
+Use tcron (Click to install) with &amp;quot;default.rc&amp;quot; or &amp;quot;default.rc2&amp;quot;.
+usage: tcron logfile command hours [timezone delay_sec elsecommand]
+execute &amp;quot;command&amp;quot; during time interval once.</description>
+    </item>
+    
     <item>
       <title>Offline resources</title>
       <link>/en/offlinecache/</link>
diff --git a/en/filenames/index.html b/en/filenames/index.html
index 85c842a..6177484 100644
--- a/en/filenames/index.html
+++ b/en/filenames/index.html
@@ -77,6 +77,7 @@
 &quot;<a href="file:///data/data/info.torapp.uweb/files/default.filecap">default.filecap</a>&quot;:<a href="../filecap/index.html">custom file handling</a><br>
 &quot;<a href="file:///data/data/info.torapp.uweb/files/default.rc">default.rc</a>&quot;: check the option &quot;custom file handling&quot; to execute the shell script file during uweb launching. <a href="../tools/index.html">tcron</a> provides extra cron tools.<br>
 &quot;<a href="file:///data/data/info.torapp.uweb/files/default.rc2">default.rc2</a>&quot;: check the option &quot;custom file handling&quot; to execute the shell script file when uweb returns to foreground.<br>
+&quot;<a href="file:///data/data/info.torapp.uweb/files/crontab">crontab</a>&quot;:<br>
 &quot;<a href="file:///data/data/info.torapp.uweb/files/engine.search">engine.search</a>&quot;: to define quick search engines (pressing right arrow button to use next engine to search). The file format is similar to <a href="../search/index.html">home5.search</a> but using &quot;%s&quot; as search keywords.<br>
 &quot;<a href="file:///data/data/info.torapp.uweb/files/default.siteconf">default.siteconf</a>&quot;: to save ua, js disabling, no-image mode, forbids 3rd-party resources (js and others), active scripts, global scripts for sites. Only save the difference to default ones.<br>
 &quot;<a href="file:///data/data/info.torapp.uweb/files/default.playrate">default.playrate</a>&quot;: fullscreen playing menu. The file format is same as <a href="../links/index.html">default.link</a>. Playing ratio menu items should have empty link parts such as &quot;.5x:&quot;, at least one such menu is required. All other menus must be put after playing ratio menus.<br>
@@ -100,8 +101,8 @@
 <p>&quot;<a href="file:///data/data/info.torapp.uweb/files/shortcut/">shortcut/</a>&quot;: dynamical shortcut, if not exist, then default to &quot;bookmark&quot;.</p>
 
 </div>
-<p>Last Modified: 8 May 2023<br>
-add gissues<br>
+<p>Last Modified: 25 October 2023<br>
+add en/_posts/tcron.md<br>
 <pre></pre>
 </p>
 <script>
diff --git a/en/sitemap.xml b/en/sitemap.xml
index 7c3481f..f0b1678 100644
--- a/en/sitemap.xml
+++ b/en/sitemap.xml
@@ -3,7 +3,7 @@
   xmlns:xhtml="http://www.w3.org/1999/xhtml">
   <url>
     <loc>/en/_posts/</loc>
-    <lastmod>2023-08-20T15:44:51+08:00</lastmod>
+    <lastmod>2023-10-25T13:07:04+08:00</lastmod>
     <xhtml:link
                 rel="alternate"
                 hreflang="zh"
@@ -14,6 +14,19 @@
                 hreflang="en"
                 href="/en/_posts/"
                 />
+  </url><url>
+    <loc>/en/tcron/</loc>
+    <lastmod>2023-10-25T13:03:03+08:00</lastmod>
+    <xhtml:link
+                rel="alternate"
+                hreflang="zh"
+                href="/zh/tcron/"
+                />
+    <xhtml:link
+                rel="alternate"
+                hreflang="en"
+                href="/en/tcron/"
+                />
   </url><url>
     <loc>/en/offlinecache/</loc>
     <lastmod>2023-05-09T22:48:54+08:00</lastmod>
@@ -213,7 +226,7 @@
                 />
   </url><url>
     <loc>/en/filenames/</loc>
-    <lastmod>2023-05-08T21:16:14+08:00</lastmod>
+    <lastmod>2023-10-25T13:07:04+08:00</lastmod>
     <xhtml:link
                 rel="alternate"
                 hreflang="zh"
diff --git a/en/tcron/index.html b/en/tcron/index.html
new file mode 100644
index 0000000..c0d373f
--- /dev/null
+++ b/en/tcron/index.html
@@ -0,0 +1,104 @@
+<!doctype html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <link rel="stylesheet" href="../style.css" type="text/css" />
+    <title>cron</title>
+    <script type="text/javascript">
+      function findLang(){
+        let href = location.href;
+        for(let i=href.length-1;i>0;i--){
+          if('/'==href.charAt(i) && '/'==href.charAt(i-3))
+            return i;
+        }
+        return 0;
+      }
+      function nav2(page){
+        let i = findLang();
+        location.href = location.href.substring(0,i+1)+page;
+      }
+      function nav2Lang(lang){
+        let i = findLang();
+        let href = location.href;
+        location.href = location.href.substring(0,i-2)+lang+location.href.substring(i);
+      }
+    </script>
+  </head>
+  <body>
+    <header class='header'>
+      <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>
+      
+        
+          <a class="logo" href="javascript:void(0)" onclick="return nav2Lang('zh')">简体中文</a>
+        
+      
+      <nav>
+      </nav>
+    </header>
+    <br />
+    
+<div class="container">
+  <h1 class="title">cron
+    <br>
+    <span class="subtitle"></span>
+  </h1>
+  <ul class="tags">
+    
+  </ul>
+  <h4 id="crontab">crontab</h4>
+<p>For performance, the file &quot;crontab&quot; uses single space as field separator. Letters are not suppored currently. So use &quot;1&quot; for &quot;January&quot; and 2 for &quot;Tuesday&quot; etc.</p>
+<h4 id="tcron">tcron</h4>
+<p>With the option &quot;custom file handling&quot; enabled, &quot;default.rc&quot; runs as shell script at uweb launching time and &quot;default.rc2&quot; runs whenever uweb becomes foreground.</p>
+<p>Use tcron (<a href="i:0bhttps://fastly.jsdelivr.net/gh/torappinfo/uwebjs/bin/tcron.tgz">Click to install</a>) with &quot;default.rc&quot; or &quot;default.rc2&quot;.</p>
+<p>usage: tcron logfile command hours [timezone delay_sec elsecommand]<br>
+execute &quot;command&quot; during time interval once.<br>
+where logfile modification time must be updated if &quot;command&quot; runs successfully.</p>
+<p>hours: If positive, then each day is divided into multiple intervals (unit: hour), and in each interval, the &quot;command&quot; runs only once.<br>
+If  negative, then the unit is minute.<br>
+hours could be also in &quot;hh:mm-hh:mm,...&quot; format. Ex. &quot;6:00-8:30,11:00-13:00,5:30-6:30&quot;.<br>
+timezone: an integer, default to be &quot;8&quot; for Beijing China (UTC+8). &quot;0&quot; for Greenwich UK (UTC+0).<br>
+delay_sec: execute &quot;command&quot; after &quot;delay_sec&quot; seconds.<br>
+elsecommand: executed whenever &quot;command&quot; not run.</p>
+<p>ex:<br>
+set PATH=/system/bin:/data/data/info.torapp.uweb/files/bin<br>
+#Empty the folder &quot;baidu&quot; every 30 days.<br>
+tcron /sdcard/b &quot;rm -rf /sdcard/baidu/*;toybox touch /sdcard/b&quot; 720</p>
+<p><a target="_self" href="i:0hdefault.rc:../searchurl/txt/default.rc">Install example default.rc file for termux</a></p>
+
+</div>
+<p>Last Modified: 25 October 2023<br>
+add en/_posts/tcron.md<br>
+<pre></pre>
+</p>
+<script>
+  if(location.href.indexOf("/zh/")>0){
+    var script = document.createElement("script");
+    script.type = "text/javascript";
+    script.src = "../../js/gissues.js";
+    script.setAttribute("repo","jamesfengcao/uweb");
+    script.setAttribute("issue-term","title");
+    script.setAttribute("theme","github-light");
+    script.async = true;
+    document.body.appendChild(script);
+  }
+</script>
+<script id='jsgiscus'
+  src='https://giscus.app/client.js'
+  data-repo="torappinfo/uweb"
+  data-repo-id="MDEwOlJlcG9zaXRvcnkzMDIyMDU3MjE="
+  data-category="Announcements"
+  data-category-id="DIC_kwDOEgNLGc4CQjsh"
+  data-mapping="title"
+  data-strict="0"
+  data-reactions-enabled="1"
+  data-emit-metadata="0"
+  data-input-position="top"
+  data-theme="light"
+  data-lang="en"
+  data-loading="lazy"
+  crossorigin="anonymous" async>
+</script>
+
+  </body>
+</html>
diff --git a/latest.html b/latest.html
index b50b0ac..1234294 100644
--- a/latest.html
+++ b/latest.html
@@ -1,6 +1,6 @@
 <script>
   let verCode = %1%;
-  let latestV = 1013;
+  let latestV = 1015;
   if( verCode>=latestV) alert("No updates available!");
   else
     location.href = "https://s1.asytech.cn/s/tQrgT5kBRg8Trry/download?path=%2F&files=uweb"+
diff --git a/sitemap.xml b/sitemap.xml
index 0c341f6..cfaaa97 100644
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -4,14 +4,14 @@
   <sitemap>
     <loc>en/sitemap.xml</loc>
     
-      <lastmod>2023-08-20T15:44:51+08:00</lastmod>
+      <lastmod>2023-10-25T13:07:04+08:00</lastmod>
     
   </sitemap>
   
   <sitemap>
     <loc>zh/sitemap.xml</loc>
     
-      <lastmod>2023-07-29T22:35:45+08:00</lastmod>
+      <lastmod>2023-10-25T13:06:41+08:00</lastmod>
     
   </sitemap>
   
diff --git a/zh/_posts/index.xml b/zh/_posts/index.xml
index 247eaa2..4575df8 100644
--- a/zh/_posts/index.xml
+++ b/zh/_posts/index.xml
@@ -397,6 +397,7 @@ webview 80- 夜间模式</description>
 &amp;quot;default.filecap&amp;quot;:文件特殊处理
 &amp;quot;default.rc&amp;quot;:如果勾选“文件预处理”，则uweb启动时运行此shell脚本。可与tcron配合运行定时任务，如存储清理、网页签到等。
 &amp;quot;default.rc2&amp;quot;:如果勾选“文件预处理”，则uweb返回前台时运行此shell脚本。
+&amp;quot;crontab&amp;quot;:
 &amp;quot;engine.search&amp;quot;:格式同home5.search，搜索引擎url仅支持%s语法。(搜索词部分用%s代替)，供自动顺序搜索使用。
 &amp;quot;default.siteconf&amp;quot;:网站独立设置，保存ua、禁用js、无图、禁用第三方(js,可疑资源)、当前激活脚本、全局脚本。当前设置与默认不同才会保存。比如当前不屏蔽第三方js，但屏蔽第三方可疑资源，则屏蔽第三方设置与默认不同，站点设置被保存。
 &amp;quot;default.playrate&amp;quot;:全屏播放菜单项，格式与文件default.link完全相同。倍速播放菜单链接部分为空，譬如&amp;quot;.5x:&amp;quot;，倍速菜单至少有一个。链接部分非空的菜单必须在所有倍速菜单之后。
diff --git a/zh/filenames/index.html b/zh/filenames/index.html
index ea73b26..1c9f9dd 100644
--- a/zh/filenames/index.html
+++ b/zh/filenames/index.html
@@ -76,6 +76,7 @@
 &quot;<a href="file:///data/data/info.torapp.uweb/files/default.filecap">default.filecap</a>&quot;:<a href="../filecap/index.html">文件特殊处理</a><br>
 &quot;<a href="file:///data/data/info.torapp.uweb/files/default.rc">default.rc</a>&quot;:如果勾选“文件预处理”，则uweb启动时运行此shell脚本。可与<a href="../tools/index.html">tcron</a>配合运行定时任务，如存储清理、网页签到等。<br>
 &quot;<a href="file:///data/data/info.torapp.uweb/files/default.rc2">default.rc2</a>&quot;:如果勾选“文件预处理”，则uweb返回前台时运行此shell脚本。<br>
+&quot;<a href="file:///data/data/info.torapp.uweb/files/crontab">crontab</a>&quot;:<br>
 &quot;<a href="file:///data/data/info.torapp.uweb/files/engine.search">engine.search</a>&quot;:格式同<a href="../search/index.html">home5.search</a>，搜索引擎url仅支持%s语法。(搜索词部分用%s代替)，供自动顺序搜索使用。<br>
 &quot;<a href="file:///data/data/info.torapp.uweb/files/default.siteconf">default.siteconf</a>&quot;:网站独立设置，保存ua、禁用js、无图、禁用第三方(js,可疑资源)、当前激活脚本、全局脚本。当前设置与默认不同才会保存。比如当前不屏蔽第三方js，但屏蔽第三方可疑资源，则屏蔽第三方设置与默认不同，站点设置被保存。<br>
 &quot;<a href="file:///data/data/info.torapp.uweb/files/default.playrate">default.playrate</a>&quot;:全屏播放菜单项，格式与文件<a href="../links/index.html">default.link</a>完全相同。倍速播放菜单链接部分为空，譬如&quot;.5x:&quot;，倍速菜单至少有一个。链接部分非空的菜单必须在所有倍速菜单之后。<br>
@@ -100,8 +101,8 @@
 &quot;shortcut/&quot;:动态shortcut刷新目录，若不存在则默认为&quot;bookmark&quot;目录。</p>
 
 </div>
-<p>Last Modified: 15 February 2023<br>
-clarify home.css format<br>
+<p>Last Modified: 25 October 2023<br>
+add en/_posts/tcron.md<br>
 <pre></pre>
 </p>
 <script>
diff --git a/zh/searchurl/config.html b/zh/searchurl/config.html
index 075dd99..220d0dd 100644
--- a/zh/searchurl/config.html
+++ b/zh/searchurl/config.html
@@ -17,5 +17,5 @@
 
 
 
-<html><head><meta charset="utf-8"></head><script src="config.js" charset="utf-8"></script>
+<script src="config.js" charset="utf-8"></script>
 
diff --git a/zh/sitemap.xml b/zh/sitemap.xml
index 53ad97b..fa660f9 100644
--- a/zh/sitemap.xml
+++ b/zh/sitemap.xml
@@ -3,7 +3,7 @@
   xmlns:xhtml="http://www.w3.org/1999/xhtml">
   <url>
     <loc>/zh/_posts/</loc>
-    <lastmod>2023-07-29T22:35:45+08:00</lastmod>
+    <lastmod>2023-10-25T13:06:41+08:00</lastmod>
     <xhtml:link
                 rel="alternate"
                 hreflang="en"
@@ -333,7 +333,7 @@
                 />
   </url><url>
     <loc>/zh/filenames/</loc>
-    <lastmod>2023-02-15T07:16:07+08:00</lastmod>
+    <lastmod>2023-10-25T13:06:41+08:00</lastmod>
     <xhtml:link
                 rel="alternate"
                 hreflang="en"
@@ -366,6 +366,16 @@
   </url><url>
     <loc>/zh/tcron/</loc>
     <lastmod>2023-05-19T15:10:23+08:00</lastmod>
+    <xhtml:link
+                rel="alternate"
+                hreflang="en"
+                href="/en/tcron/"
+                />
+    <xhtml:link
+                rel="alternate"
+                hreflang="zh"
+                href="/zh/tcron/"
+                />
   </url><url>
     <loc>/zh/logcat/</loc>
     <lastmod>2022-09-24T14:06:03+08:00</lastmod>
diff --git a/zh/tcron/index.html b/zh/tcron/index.html
index c2a5d32..aaa8415 100644
--- a/zh/tcron/index.html
+++ b/zh/tcron/index.html
@@ -29,6 +29,10 @@
     <header class='header'>
       <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>
       
+        
+          <a class="logo" href="javascript:void(0)" onclick="return nav2Lang('en')">English</a>
+        
+      
       <nav>
       </nav>
     </header>