In /etc/logrotate.conf
is user permission different from one ubuntu version to another? .... and why ??
as i found it like that in ubuntu 18.04
# use the syslog group by default, since this is the owning group
# of /var/log/syslog.
su root syslog
and like that in ubuntu 20.04
# use the adm group by default, since this is the owning group
# of /var/log/syslog.
su root adm