There are many ways to display all linux services. But to be
honest, these methods fails to list all services usually. The
proper one to use, utilizes systemctl command. Your
system might use different service initialization commands, like
popular service. However when command
systemctl is available it should yield good results
with list-units option. Some extra parameters are
added, which are self explainable.
The output of command lists table with service name, whether it
is enabled and if it is running at the
moment as well some description.
Example output of command
UNIT LOAD ACTIVE SUB DESCRIPTION
accounts-daemon.service loaded active running Accounts Service
acpid.service loaded active running ACPI event daemon
alsa-restore.service loaded active exited Save/Restore Sound Card State
alsa-state.service loaded inactive dead Manage Sound Card State (restore and store)
anacron.service loaded inactive dead Run anacron jobs
● apache2.service masked inactive dead apache2.service
apparmor.service loaded active exited AppArmor initialization
apport.service loaded active exited LSB: automatic crash report generation
apt-daily-upgrade.service loaded inactive dead Daily apt upgrade and clean activities
apt-daily.service loaded inactive dead Daily apt download activities
atd.service loaded active running Deferred execution scheduler
