cheat-fork-echo/cheat/cheatsheets/journalctl
2015-02-09 18:05:13 -05:00

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# Actively follow log (like tail -f)
journalctl -f
# Display all errors since last boot
journalctl -b -p err
# Filter by time period
journalctl --since=2012-10-15 --until="2011-10-16 23:59:59"
# Show list of systemd units logged in journal
journalctl -F _SYSTEMD_UNIT
# Filter by specific unit
journalctl -u dbus
# Filter by executable name
journalctl /usr/bin/dbus-daemon
# Filter by PID
journalctl _PID=123
# Filter by Command, e.g., sshd
journalctl _COMM=sshd
# Filter by Command and time period
journalctl _COMM=crond --since '10:00' --until '11:00'
# List all available boots
journalctl --list-boots
# Filter by specific User ID e.g., user id 1000
journalctl _UID=1000