Thanks Mogen, the tmpwatch in crontab is as follow , and I believe it should remove the files after 240 hours, but as far as I see , it removes them much more earlier. more /etc/cron.daily/tmpwatch /usr/sbin/tmpwatch -x /tmp/.X11-unix -x /tmp/.XIM-unix -x /tmp/.font-unix -x /tmp/.ICE-unix -x /tmp/.Test-unix 240 /tmp Mogens Kjaer wrote: > Centos wrote: > >> Hello >> >> Does every thing in /tmp directory will be removed when centos rebooted ? >> > > No, but... > > >> is there any where that we can change this settings ? >> > > the cleanup is done by tmpwatch. > > man tmpwatch > cat /etc/cron.daily/tmpwatch > > Mogens >