Show journal disk usage
Build a paste-ready command, then review its compatibility and effects before running it.
journalctl --disk-usageread-onlyno known side effects Compatibility
LinuxVerified for Linux using posix, bash, zsh syntax.
Operational knowledgereview due 2027-01-20
Requirementsjournalctljournalctl must be installed and available on PATH.
Version supportjournalctl Current supported releasesVerified for linux using posix, bash, zsh syntax; consult compatibility notes for platform-specific differences.
Expected signalsArchived and active journals take up 312.0M in the file system.Representative successful output; values vary with the selected target and system state.
Known errorsjournalctl: command not foundjournalctl is missing or is not available on PATH.
Verifyjournalctl --disk-usageThe output matches the expected target and exits without an error.Rollback noteNot required: this command is read-only and does not change system state.
Command breakdown
01journalctlCommandRuns the journalctl stage of this one-liner.
02--disk-usageOptionConfigures journalctl with the --disk-usage option.
Example input
journalctl --disk-usage
Example output
Archived and active journals take up 312.0M in the file system.
Illustrative output — exact values vary by system and data.
Official sources