Looking at /etc/tmpfiles.d/tmp.conf, it is pretty bare bones:
$ cat /etc/tmpfiles.d/tmp.conf
D /tmp 1777 root root 10d
q /var/tmp 1777 root root 30d
It also can't be attributed to any package
$ dpkg -S /etc/tmpfiles.d/tmp.conf
dpkg-query: no path found matching pattern /etc/tmpfiles.d/tmp.conf
Further investigation shows, this file is created by systemd.postinst on
upgrades.
It would be a good idea, if the file contained this information:
- which package created it
- why it was created
- if it's safe to be removed
Michael