Subj : Re: Cleaning up stale logs in Bookworm
To   : All
From : The Natural Philosopher
Date : Sun Sep 14 2025 18:22:39

On 14/09/2025 04:16, bp@www.zefox.net wrote:
> Is there some utility that will truncate accumulated log
> file in Bookworm? I set up an 8GB microSD for a Pi2 and
> have ended up using it much longer than expected.
> 
> It might not help, but a housecleaning utility seems like
> a good thing to know about in any case.
> 
> Thanks for reading,
> 
> bob prohaska
> 

Umm.
Are these old style logs or the dreaded systemd?

I maintained a log/script  of how to get the best out of a pi Zero and 
never ever write to its SD card...

echo  "tmpfs /var/ramlog tmpfs nodev,nosuid,noexec,nodiratime,size=25M 
0 	0" >> /etc/fstab

# /var/ramlog is used  for everything except systemd. Logrotate keeps it 
tidy.
# various entties that create log files have to be configured to dump 
stuff in it.

## fuck with shitsemd

sed -i "s/#Storage=auto/Storage=volatile/" /etc/systemd/journald.conf
sed -i "s/#RuntimeMaxUse=/RuntimeMaxUse=25M/" /etc/systemd/journald.conf
sed -i "s/#ForwardToConsole=yes/ForwardToConsole=no/" 
/etc/systemd/journald.conf
sed -i "s/#ForwardToWall=yes/ForwardToWall=no/" //etc/systemd/journald.conf

#Using volatile storage puts it in /var/run/systemd  and /var/run is 
created as a ram
# based file system by the operating system

Naturally systemd doesn't use logrotate.  Wheels must be constantly 
reinvented, but RuntimeMaxUse=25M does most of what you want

-- 
"I guess a rattlesnake ain't risponsible fer bein' a rattlesnake, but ah 
puts mah heel on um jess the same if'n I catches him around mah chillun".



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 * Origin: A little, after lunch (3:633/280.2@fidonet)

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