do backup && suspend ?

[linuxnube1]

hello, can anyone explain why this command in crontab doesn't send PC to sleep after backing up the system ?

30 4 * * 1,5 root tar --exclude="/media" --exclude="/proc" --exclude="/sys" --exclude="/home" -czf /media/user/cf44ddc7-6916-440c-b9c7-0de7639001c4/backup/fullbackup.tar.gz / && systemctl hybrid-sleep