systemd timer

Simple definition

A mechanism systemd planning the delivery of services.

Technical definition

.timer units trigger.service units according to a calendar or relative planning.

What is it used for ?

Replace or complete cron with integration systemd.

Practical example

A timer can run a backup script every day at 2:00 am.

Common issues

• Timer enabled but service absent
• Timezone misunderstood
• UR not configured

Related terms

systemd · cron · systemctl

Key takeaway: Exact behavior and commands may vary depending on versions, products and architectures.