Journalctl--help

Journalctl [OPTIONS ...] [MATCHES ...]

Query the journal.

Flags:
--system Show the system journal
--user Show the user journal for the current user
-M--machine=container Operate on local CONTAINER
--since=date Show entries not older than the specified DATE
--until=date Show entries not newer than the specified DATE
-C--cursor=cursor Show entries starting at the specified cursor
--after-cursor=cursor Show entries after the specified cursor
--show-cursor Print the cursor after all the entries
-B--boot[=id] Show current boot or the specified boot
--list-boots Show terse information about recorded boots
-K--DMESG Show kernel message log from the current boot
-U--unit=unit Show logs from the specified unit
--user-unit=unit Show logs from the specified user unit
-T--identifier=string Show entries with the specified syslog identifier
-P--priority=range Show entries with the specified priority
-e--pager-end Immediately jump to the end in the pager
-F--follow Follow the Journal
-N--lines[=integer] number of journal entries to show
--no-tail Show All lines, even in follow mode
-R--reverse Show the newest entries first
-o--output=string Change journal output mode (short, Short-iso,
Short-precise, Short-monotonic, verbose,
Export, JSON, Json-pretty, Json-sse, cat)
--UTC Express time in coordinated Universal time (UTC)
-X--catalog ADD message explanations where available
--no-full ellipsize Fields
-A--all Show all fields, including long and unprintable
-Q--quiet do not show privilege warning
--no-pager do not pipe output to a pager
-M--merge Show entries from all available journals
-d--directory=path Show journal files from directory
--file=path Show Journal File
--root=root Operate on the catalog files underneath the root root
--interval=time time interval for changing the FSS sealing key
--verify-key=key Specify FSS Verification key
--force Override of the FSS key pair with--setup-keys

Commands:
-H--help Show this help text
--version Show Package version
-F--field=field List All values that a specified field takes
--new-id128 Generate a new 128-bit ID
--disk-usage Show Total disk usage of all journal files
--vacuum-size=bytes Reduce disk usage below specified size
--vacuum-time=time Remove journal files older than specified date
--flush Flush All journal data From/run Into/var
--header Show Journal header information
--list-catalog Show All message IDs in the catalog
--dump-catalog Show entries in the message catalog
--update-catalog Update the message catalog database
--setup-keys Generate A new FSS key pair
--verify Verify Journal file consistency

Journalctl--help