hello
1- To clean your server :
note : this command will remove all .gz files stored in /home
rm -rf /home/*.gz
note : this command will Empty cPanel users trash and remove all backup files created by cpanel user
rm -rfv /home/*/.trash;rm -rfv /home/*/backup*
note : this command will remove all backup files created by cpanel user and stores under public_html
rm -rfv /home/*/public_html/backup*
note : this command will remove all backup files created by server admin and stored under user home dir
rm -rfv /home/*/cpmove*
2- To adjust user's files permission
/scripts/enablefileprotect
/scripts/chownpublichtmls