Processo para limpeza de TMP, manual e com acionamento via cron, preferencialmente (centos/Alamalinux)
# yum install tmpwatch
# ls -1 /tmp | wc -l
# tmpwatch --mtime --all 168 /tmp
# ls -1 /tmp | wc -lAgendamento via Cron:
# crontab -e
# 0 0 * * * tmpwatch --mtime --all 168 /tmp
Fonte:
https://support.cpanel.net/hc/en-us/articles/360052677654-How-to-clean-your-tmp-directory-with-tmpwatch