Inspecting Services with 'systemd-analyze'
systemd is a suite of basic building blocks for a Linux system. It provides a system and service manager that runs as Process ID 1 and starts the rest of the system.
To manage the services run the following commands:
systemctl
orsystemctl list-units
: This command lists the running units.systemctl --failed
: This command lists failed units.systemctl list-unit-files
: This command lists all the installed unit files. The unit files are usually present in /usr/lib/systemd/system/ and /etc/systemd/system/.systemctl status pid
: This command displays the cgroup slice, memory and parent for a PID.systemctl start unit
: This command starts a unit immediately.systemctl stop unit
: This command stops a unit.systemctl restart unit
: This command restarts a unit.systemctl reload unit
: This command asks a unit to reload its configuration.systemctl status unit
: This command displays the status of a unit.systemctl enable unit
: This command enables a unit to run on startup.systemctl enable --now unit
: This command enables a unit to run on startup and start immediately.systemctl disable unit
: This command disables a unit and removes it from the startup program.systemctl mask unit
: This command masks a unit to make it impossible to start.systemctl unmask unit
: This command unmasks a unit.
To get an overview of the system boot-up time, run the following command:
systemd-analyze
To view a list of all running units, sorted by the time they took to initialize (highest time on top), run the following command:
systemd-analyze blame
Last modified August 1, 2024: Merge pull request #1562 from naltanov/photon-hugo (a784a46)