I have the following configuration to clean up temporary files (default for CentOS 7), which says that files in /tmp should be removed if they are more than 10 days old.[root]# tail -n +10 /usr/lib/tmpfiles.d/tmp.conf | head -n 3# Clear tmp directories separately, to make them easier to overrided /tmp 1777 root root 10dd /var/tmp 1777 root root 30dHowever, even after running systemd-tmpfiles --clean, when I look at the contents of /tmp, there are files in there that are more than 10 days old.[root]# ls -dl /tmp/backup-inspectiondrwxr-xr-x 8 root root 68 Aug 29  2014 /tmp/backup-inspectionThe contents of the /tmp directory is huge:[root]# du -h /tmp | tail -n 13.5G    /tmpCan anyone explain to me why the backup-inspection directory is not removed? It is nearly 1 year old?
Why is `systemd-tmpfiles --clean` not working?
systemd;tmp