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I have an embedded system (i.MX6) running a modified version of Ubuntu 18.04 LTS bionic stored on its SD card and I want to know how to manage /var/log/syslog file size.

I noticed that systemd journal doesn't manage that file when I type this :

journalctl --vacuum-size=10M

I really don't need systemd journals, but this is another issue...

Can someone confirm that systemd, apart from redirecting the standard output of services to /var/log/syslog (can be disabled apparently) does not propose anything else to manage syslog ?

Should I install "Logrotate" ? Since I'm using an SD card I should be careful and not to wear it out with an unsuitable configuration.

Are there other options ?

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Finally, I disabled Rsyslog and made systemd the only log manager of my embedded system since I can fix a limit of the log size in /etc/systemd/journald.conf

I prefer the UNIX philosophy and simple stuff (KISS) but systemd is already installed in the Ubuntu of the embedded system I'm working on so I will not complicate things for me.

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