Date: 2011nov8 Updated: 2020apr28 OS: Linux Distro: RedHat/Fedora/CentOS Keywords: systemd Q. systemctl: cheatsheet (some common commands) A. We used to use chkconfig but the new way is systemctl. Is a service set to start at boot?

systemctl is-enabled <SERVICE>.service

for example:

systemctl is-enabled postgresql.service

Make a service start at boot:

systemctl enable <SERVICE>.service

for example:

systemctl enable postgresql.service

Make a service NOT start at boot:

systemctl disable <SERVICE>.service

for example:

systemctl disable postgresql.service

List failed units:

systemctl list-units --state=failed systemctl --failed

Show all it knows:

systemctl

for example, is syslog running:

systemctl | grep syslog

When a unit file changes on disk:

systemctl daemon-reload