Re: Append to logfile with year-month

[Mantas Mikulėnas <grawity@xxxxxxxxx>]

On Thu, Aug 24, 2023 at 10:49 AM Cecil Westerhof <cldwesterhof@xxxxxxxxx> wrote:

In a service file I can use:

    StandardOutput=append:/var/log/root/aptCacheUsage.log

but I want to use something like:

    StandardOutput=append:/var/log/root/aptCacheUsage_$(date +%%Y-%%m).log

Did does not work, because this puts it in:

    /var/log/root/aptCacheUsage_$(date +%Y-%m).log

Is there a way I can put it in:

    /var/log/root/aptCacheUsage_2023-08.log

while it would automatically next month go into:

   /var/log/root/aptCacheUsage_2023-09.log

Not with built-in systemd tools. If it's a periodic (not permanently running) service, best you can do is script a monthly cronjob that automatically edits the StandardOutput line in your .service unit.

 

I could of-course put it into:

    /var/log/root/aptCacheUsage.log

and at the beginning of the month move it if it exists with a timed service, but I really would not like that kind of solution.

It's called /etc/logrotate.conf and it's what everyone else does. It's what Debian/Ubuntu itself uses for /var/log/apt*.log and such.

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Mantas Mikulėnas