journalctl - Command Generator Online

Examples

Show all journal entries: journalctl -a
Show boot log information: journalctl -b
Show logs in a specific directory: journalctl --catalog=<directory>
Show new log information: journalctl -f
Show complete log records: journalctl --full
Show the value of a specified field: journalctl --field=<field>
List available boot logs: journalctl --list-boots
List available log directories: journalctl --list-catalog
List available log fields: journalctl --list-fields
List known remote hosts: journalctl --list-hosts
List available log sources: journalctl --list-journal
List available system units: journalctl --list-units
Merge multiple log sources: journalctl --merge
Generate a new 128-bit ID for all records: journalctl --new-id128
Do not display the hostname: journalctl --no-hostname
Do not use a pager: journalctl --no-pager
Output a list of available fields to standard output: journalctl --output-fields
Output logs in JSON format: journalctl --output=json
Output logs in pretty JSON format: journalctl --output=json-pretty
Output logs in short format: journalctl --output=short
Output logs in verbose format: journalctl --output=verbose
Show logs with a specified priority: journalctl -p <priority>
Show shutdown log information: journalctl --poweroff
Do not show error and warning messages: journalctl --quiet
Display logs in reverse order: journalctl --reverse
Show only system-wide logs: journalctl --system
Show logs for a specified unit: journalctl --unit=<unit>
Show logs for a specified kernel message: journalctl -k <message>
Show logs starting from a specified date/time: journalctl -S <date/time>
Display UTC time in timestamps: journalctl -T
Display local time in timestamps: journalctl -t
Show logs for a specified user only: journalctl -u <user>
Display UTC time in timestamps: journalctl --utc
Limit the maximum size of the log file: journalctl --vacuum-size=<size>
Limit the maximum retention time of the log file: journalctl --vacuum-time=<time>