journalctl.md

journalctl

• log errors
• log service live
• log service since
• get size
• vacuum

log errors

log errors paged journalctl -xe --pager

log service live

journalctl -u UNIT -f

log service since

journalctl -u UNIT --since "10 min ago"
journalctl -u UNIT --since "10 hour ago"
journalctl -u UNIT --since "10 day ago"

get size

journalctl --disk-usage

vacuum

remove older journal till size not below given size

journalctl --vacuum-size=200M