e1833e95f2
Slowly building the habit of blogging more (especially about nix). Change-Id: I13006a6555d746ab55b4b282ea83bc732573a58e Reviewed-on: https://cl.tvl.fyi/c/depot/+/5149 Tested-by: BuildkiteCI Reviewed-by: wpcarro <wpcarro@gmail.com> Autosubmit: wpcarro <wpcarro@gmail.com>
40 lines
1.1 KiB
Markdown
40 lines
1.1 KiB
Markdown
## Show me the codes
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Regularly rebooting machines can be a useful, hygienic practice, but quite
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frankly I cannot be relied on to remember to regularly reboot my machine.
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Let's free-up some wetware-RAM by automating this with Nix. The following
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addition to your `configuration.nix` will schedule daily reboots at `03:00`:
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```nix
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systemd.timers.auto-reboot = {
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wantedBy = [ "timers.target" ];
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timerConfig = {
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OnCalendar = "*-*-* 03:00:00";
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Unit = "reboot.target";
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};
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};
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```
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If you want to fiddle with the date format, `systemd-analyze` is your friend:
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```shell
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λ systemd-analyze calendar '*-*-* 03:00:00'
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Normalized form: *-*-* 03:00:00
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Next elapse: Tue 2022-02-01 03:00:00 PST
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(in UTC): Tue 2022-02-01 11:00:00 UTC
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From now: 12h left
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```
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After calling `nixos-rebuild switch`, you can verify that `systemd` started the
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timer with:
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```shell
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λ systemctl list-timers auto-reboot
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# output omitted because I'm writing this from a different machine
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```
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## That's all, folks!
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I wanted to keep this post short-and-sweet, to build the habit of posting more
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regularly. Hopefully someone out there found this useful.
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