| Description
|
SystemD
|
SystemV
|
| Start a service
|
systemctl start {x}
|
service {x} start
|
| Stop a service
|
systemctl stop {x}
|
service {x} stop
|
| Restart a service
|
systemctl restart {x}
|
service {x} restart
|
| Edit a service (drop-in override)
|
systemctl edit {x}
|
|
| Check if a service is running
|
systemctl is-active {x}
|
service {x} status
|
| Install service
|
systemctl enable {x}
|
chkconfig {x} on
|
| Uninstall a service
|
systemctl disable {x}
|
chkconfig {x} off
|
| Check if a service is installed
|
systemctl is-enabled {x}
|
chkconfig {x} --list
|
| Turn off the computer/vm/system
|
systemctl halt/poweroff
|
halt
|
| Restart the computer/vm/system
|
systemctl reboot
|
reboot
|
| Kill a process
|
systemctl kill {x}
|
kill -9 {pid}
|
| Show a unit’s dependencies
|
systemctl list-dependencies
|
|
| List sockets and what activates
|
systemctl list-sockets
|
|
| View active systemd jobs
|
systemctl list-jobs
|
|
| See unit files and their states
|
systemctl list-unit-files
|
|
| Show if units are loaded/active
|
systemctl list-units
|
|
| List default target (like run level)
|
systemctl get-default
|
|
| Set default target to start in graphical target (like run level 5)
|
systemctl set-default graphical.target
|
init 5
|
| Set default target to not start in graphical target (like run level 3)
|
systemctl set-default multi-user.target
|
init 3
|
| Follow messages as they appear
|
journalctl -f
|
tail -f /var/log/messages
|
| Show only kernel messages
|
journalctl -k
|
|
| Show all error of this boot
|
journalctl -b -p err
|
|
| Filter the log
|
journalctl --since=today
|
|
| See network service messages
|
journalctl -u network.service
|
|
| Show all messages of a process
|
journalctl /usr/sbin/httpd
|
|
| Print computer/vm/system informations
|
hostnamectl
|
|
| Print date and time
|
timedatectl
|
|
| Analyze boot time
|
systemd-analyze
|
|
| Analyze boot critical path to graphic |
systemd-analyze critical-chain graphical.target |
|
| Analyze and debug system manager |
systemd-analyze blame |
|