systemd.timer(5) — by systemd project (rendered by man7.org)

advancedpageLink only (©)

The manual page for systemd timer units: OnCalendar for wall-clock schedules, Persistent= to run missed jobs after downtime, RandomizedDelaySec and AccuracySec. A timer activates the same-named .service by default.

Read the full article on man7.org

Source: systemd.timer(5) by systemd project (rendered by man7.org). Licence: Link only (©).

Source reviewed: 2026-11-02
Link checked: 2026-11-02
Tested hands-on: Not by Oddbyte.Me

systemdtimerslinuxcron alternative

More in Scheduling (Task Scheduler, launchd, cron)

Jack of all tasks: launchd, and how to run periodic tasks — by Howard Oakley (Eclectic Light Company)

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Older but useful explanation of launchd replacing cron on the Mac, the five folders where launch plists live, and the difference that agents can interact with the user session while daemons cannot. Suggests checking for legacy crontabs and mentions the Lingon X editor.

LaunchAgents and LaunchDaemons: Closing the vulnerability — by Howard Oakley (Eclectic Light Company)

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Run bash (.sh) via launchd using a plist in /Library/LaunchAgents — by VikingOSX and etresoft on Apple Community

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VikingOSX shows a working LaunchAgent for a shell script: plist in ~/Library/LaunchAgents with 644 permissions, Label, RunAtLoad, StartInterval and full paths only. The original poster got theirs working after moving the script out of ~/Documents, and etresoft points to privacy permissions instead, noting shell scripts silently fail without Full Disk Access.