2017-06-04 13:31:12 +00:00
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# SysVinit to Systemd Cheatsheet
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2020-11-17 16:30:02 +00:00
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# Ways in which to control an available service.
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#
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# SysVinit:
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service SERVICE [start/stop/restart/reload/condrestart/status]
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# SystemD:
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systemctl [start/stop/restart/reload/condrestart/status] SERVICE
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# List services which can be started or stopped.
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#
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# SysVinit:
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ls /etc/rc.d/init.d/
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# SystemD Methods (one per line):
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systemctl
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systemctl list-unit-files --type=service
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ls /lib/systemd/system/*.service /etc/systemd/system/*.service
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# Enable or disable a service from running; noticeable at next boot.
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#
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# SysVinit:
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chkconfig SERVICE [on/off]
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# SystemD:
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systemctl [enable/disable] SERVICE
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# Check whether a service is enabled or disabled; see above.
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#
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# SysVinit:
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chkconfig SERVICE
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# SystemD:
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systemctl is-enabled SERVICE
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# Print a table of services, listing for which runlevel each is configured.
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#
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# SysVinit:
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chkconfig --list
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# SystemD Methods (one per line):
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systemctl list-unit-files --type=service
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ls /etc/systemd/system/*.wants/
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# Print a table of services which will be started when booting into the GUI.
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#
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# SysVinit:
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chkconfig --list | grep 5:on
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# SystemD:
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systemctl list-dependencies graphical.target
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# Used to list which levels a service is configured; on or off.
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#
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# SysVinit:
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chkconfig SERVICE --list
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# SystemD:
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ls /etc/systemd/system/*.wants/SERVICE.service
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# Used when you create a new service file or modify any configurations.
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#
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# SysVinit:
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chkconfig SERVICE --add
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# SystemD:
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systemctl daemon-reload
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# Runlevel/Target -- Half the system.
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#
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# SysVinit Runlevel: 0
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# SystemD Target: runlevel0.target
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# poweroff.target
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#
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# Single-user mode.
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#
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# SysVinit Runlevel: 1, s, single
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# SystemD Target: runlevel1.target
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# rescue.target
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#
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# User-defined/Site-specific runlevels. By default, identical to 3.
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#
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# SysVinit Runlevel: 2, 4
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# SystemD Target: runlevel2.target
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# runlevel2.target
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# multi-user.target
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#
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# Multi-user. Non-graphical. Users can usually login via multiple consoles or
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# via the network.
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#
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# SysVinit Runlevel: 3
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# SystemD Target: runlevel3.target
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# multi-user.target
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#
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# Multi-user. Graphical. Usually has all the services of runlevel 3 plus a
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# graphical login.
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#
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# SysVinit Runlevel: 5
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# SystemD Target: runlevel5.target
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# graphical.target
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#
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# Reboot.
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#
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# SysVinit Runlevel: 6
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# SystemD Target: runlevel6.target
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# reboot.target
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#
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# Emergency shell.
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#
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# SysVinit Runlevel: emergency
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# SystemD Target: emergency.target
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