Check whether linux is utilizing service or systemctl with a shell script

Question

friends!

I need a mechanism to verify if the linux virtual private server is utilizing systemctl or service.

The systemd application is installed on all of them.

if pgrep systemd-journal; then
    systemctl restart unbound
else
    service unbound restart
fi

Just need a stable way to check either the system is using service or systemctl. — wikob41409, Feb 06 '22 at 10:28
`service` works anyways here on systemd'ed Fedora 35. file `which service` /usr/sbin/service: Bourne-Again shell script, ASCII text executable — Artem S. Tashkinov, Feb 06 '22 at 19:29
*Why* do you need to know? When `systemctl` is available, all services can be controlled with it. It does not make sense to use an older compatibility mechanism when establishing new services. — U. Windl, Feb 08 '22 at 13:54

score 0 · Answer 1 · answered Feb 06 '22 at 11:01

0

ps --no-headers -o comm 1

This returns either systemd or init and appears reliable across Linux distributions and releases.

answered Feb 06 '22 at 11:01

wikob41409

1 Answers1