Systemd

 

Documentation

• Useful systemd commands
• http://www.freedesktop.org/wiki/Software/systemd/
• https://wiki.ubuntu.com/systemd
• Creating systemd service
• https://wiki.ubuntu.com/SystemdForUpstartUsers
• How To Use Systemctl to Manage Systemd Services and Units
• How to switch from NetworkManager to systemd-networkd on Linux
• https://fedoraproject.org/wiki/SysVinit_to_Systemd_Cheatsheet
• Predictable Network Interface Names
• [https://blog.darknedgy.net/technology/2020/05/02/0/index.html#tech-critique
• Systemd service tutorial

(Single user/emergency

Locations

/etc/systemd
/usr/lib/systemd/
/lib/systemd

 

HOWTO

Timers

List active timers

systemctl list-timers

List active timers

systemctl list-timers --all

Show active timers

systemctl status *timer

Create timer

systemctl enable fstrim.timer

FAQ

Analyze boot processes

systemd-analyze blame

 

Systemd and DNS

resolvectl status

Restart:

systemctl restart systemd-resolved

All status

systemctl status -a

syslog spam

https://psyq123.wordpress.com/2015/06/29/if-you-get-a-lot-of-logspam-from-systemd-in-your-varlogsyslog-this-might-help/

list available services

systemctl list-unit-files

or

systemctl list-units

 

normal interface names

net.ifnames=0

Show failed services

systemctl --failed

 

systemd: Started Session

Change loglevel to notice in /etc/systemd/system.conf

systemctl daemon-reexec