I am fairly new to BusyBox and has previously worked with systemd as init system. Now I want to switch to BusyBox as init system. I am using Buildroot tool develop custom linux distribution. I have bunch of systemd service and timer files and they run at certain interval to trigger some actions. But now I have to adapt it to BusyBox scripts to obtain similar behavior. I couldn't find any example/manual to demonstrate how this can be done. And also I wanted to know if cron or anacron could be used to schedule these executions and what are the downsides to it? Below I have added some systemd service and timer files as reference and I would like to know how this could be converted to BusyBox compatible. This would be the starting point for me to continue further.
example.service
[Unit]
Description=Test
After=network.target
[Service]
User=root
Environment="x=/etc/xx.cnf"
ExecStartPre=/bin/ping www.google.com
ExecStart=/usr/bin/example
WorkingDirectory=/mnt/test/
TimeoutStartSec=20m
Restart=on-failure
RestartSec=2m
[Install]
WantedBy=multi-user.target
example.timer
[Unit]
Description=Example timer setup
[Timer]
OnActiveSec=1m
OnUnitActiveSec=20m
[Install]
WantedBy=basic.target
Can anyone please let me know how failed jobs are triggered automatically and how Environment, ExecStartPre and WorkingDirectory systemd variables could be adapted in crontab file?
If there is any other way in busybox to achieve this, I would be happy to know about it.
Your help will be much appreciated.
Thanks in advance
P.S: Please let me know if any info is missing here
