# SysVinit to Systemd Cheat sheet

# Ways in which to control an available service.
#
# SysVinit:
service SERVICE [start/stop/restart/reload/condrestart/status]
# SystemD:
systemctl [start/stop/restart/reload/condrestart/status] SERVICE

# List services which can be started or stopped.
#
# SysVinit:
ls /etc/rc.d/init.d/
# SystemD Methods (one per line):
systemctl
systemctl list-unit-files --type=service
ls /lib/systemd/system/*.service /etc/systemd/system/*.service

# Enable or disable a service from running; noticeable at next boot.
#
# SysVinit:
chkconfig SERVICE [on/off]
# SystemD:
systemctl [enable/disable] SERVICE

# Check whether a service is enabled or disabled; see above.
#
# SysVinit:
chkconfig SERVICE
# SystemD:
systemctl is-enabled SERVICE

# Print a table of services, listing for which run level each is configured.
#
# SysVinit:
chkconfig --list
# SystemD Methods (one per line):
systemctl list-unit-files --type=service
ls /etc/systemd/system/*.wants/

# Print a table of services which will be started when booting into the GUI.
#
# SysVinit:
chkconfig --list | grep 5:on
# SystemD:
systemctl list-dependencies graphical.target

# Used to list which levels a service is configured; on or off.
#
# SysVinit:
chkconfig SERVICE --list
# SystemD:
ls /etc/systemd/system/*.wants/SERVICE.service

# Used when you create a new service file or modify any configurations.
#
# SysVinit:
chkconfig SERVICE --add
# SystemD:
systemctl daemon-reload

# Run level/Target -- Half the system.
#
# SysVinit Run level:        0
# SystemD Target:           runlevel0.target
#                           poweroff.target
#
# Single-user mode.
#
# SysVinit Runlevel:        1, s, single
# SystemD Target:           runlevel1.target
#                           rescue.target
#
# User-defined/Site-specific run levels. By default, identical to 3.
#
# SysVinit Runlevel:        2, 4
# SystemD Target:           runlevel2.target
#                           runlevel2.target
#                           multi-user.target
#
# Multi-user. Non-graphical. Users can usually login via multiple consoles or
# via the network.
#
# SysVinit Runlevel:        3
# SystemD Target:           runlevel3.target
#                           multi-user.target
#
# Multi-user. Graphical. Usually has all the services of runlevel 3 plus a
# graphical login.
#
# SysVinit Runlevel:        5
# SystemD Target:           runlevel5.target
#                           graphical.target
#
# Reboot.
#
# SysVinit Runlevel:        6
# SystemD Target:           runlevel6.target
#                           reboot.target
#
# Emergency shell.
#
# SysVinit Runlevel:        emergency
# SystemD Target:           emergency.target