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<title>Anacron on Artix</title>
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<header>
<h1>Bloggings</h1>
<a href="/index.php">Back</a>
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<article>
<h2>Anacron on Artix</h2>
<h3>2025-06-16</h3>
<h4>On Arch Anacron is a systemd process</h4>
<p>Anacron ensures cron scripts are run on machines that are frequently powered off</p>
<p>On Artix it can be run via cron (cronie)</p>
<h3>The /etc/crontab file</h3>
<code># /etc/crontab: configuration file for cron
# See cron(8) and crontab(5) for details.
# m h dom mon dow user command
SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/
# run-parts
# (also runs the 0anacron script every hour)
12 * * * * root run-parts /etc/cron.hourly
22 10 * * * root run-parts /etc/cron.daily
32 10 * * 0 root run-parts /etc/cron.weekly
42 10 1 * * root run-parts /etc/cron.monthly
</code>
<h3>The /etc/cron.hourly/0anacron script</h3>
<code>#!/bin/sh
# Check whether 0anacron was run today already
if test -r /var/spool/anacron/cron.daily; then
day=`cat /var/spool/anacron/cron.daily`
fi
if [ `date +%Y%m%d` = "$day" ]; then
exit 0;
fi
# Do not run jobs when on battery power
if test -x /usr/bin/on_ac_power; then
/usr/bin/on_ac_power >/dev/null 2>&1
if test $? -eq 1; then
exit 0
fi
fi
/usr/sbin/anacron -s
</code>
<h3>The /etc/anacrontab file</h3>
<code># /etc/anacrontab: configuration file for anacron
# See anacron(8) and anacrontab(5) for details.
SHELL=/bin/sh
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
# the maximal random delay added to the base delay of the jobs
RANDOM_DELAY=45
# the jobs will be started during the following hours only
START_HOURS_RANGE=3-22
#period in days delay in minutes job-identifier command
1 5 cron.daily nice run-parts /etc/cron.daily
7 25 cron.weekly nice run-parts /etc/cron.weekly
@monthly 45 cron.monthly nice run-parts /etc/cron.monthly
</code>
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