<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>
<p>The sixth field in crontab file could be in the format of <ahref="../links/index.html">internal links</a>. Specifically, "c:" to execute the following commands in termux and "!" to execute commands directly.</p>
<p>To make crontab more powerful, we changed the semantics as follows:<br>
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 <spanstyle="color:red">both</span> fields matche the current time.</p>
<p>Note (the original crantab semantics):<br>
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>
<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>
<p>Use tcron (<ahref="i:0bhttps://fastly.jsdelivr.net/gh/torappinfo/uwebjs/bin/tcron.tgz">Click to install</a>) with "default.rc" or "default.rc2".</p>
execute "command" during time interval once.<br>
where logfile modification time must be updated if "command" runs successfully.</p>
<p>hours: If positive, then each day is divided into multiple intervals (unit: hour), and in each interval, the "command" runs only once.<br>
If negative, then the unit is minute.<br>
hours could be also in "hh:mm-hh:mm,..." format. Ex. "6:00-8:30,11:00-13:00,5:30-6:30".<br>
timezone: an integer, default to be "8" for Beijing China (UTC+8). "0" for Greenwich UK (UTC+0).<br>
delay_sec: execute "command" after "delay_sec" seconds.<br>
elsecommand: executed whenever "command" not run.</p>
<p>ex:<br>
set PATH=/system/bin:/data/data/info.torapp.uweb/files/bin<br>
#Empty the folder "baidu" every 30 days.<br>