LSLOCKS(8)   <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>   LSLOCKS(8)

<?><?><?><?><?>
       lslocks - <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?>

<?><?><?><?><?><?><?><?> <?><?><?><?>
       lslocks [<?><?><?><?><?><?><?><?><?>]

<?><?><?><?>
       lslocks <?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?> <?><?><?><?>
       <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?> <?>
       <?><?><?><?><?><?><?> Linux.

<?><?><?><?><?><?><?><?><?>
       -b, --bytes
           Print sizes in bytes rather than in human-readable form.

           By default, sizes are shown in units that are powers of 1024 bytes.
           The formal abbreviations for these units (KiB, MiB, GiB, ...) are
           further shortened to just their first letter: K, M, G, ....

       -H, --list-columns
           List the columns that can be specified with the --output option.
           Can be used with --json or --raw to get the list in a
           machine-readable format.

       -i, --noinaccessible
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?>, <?><?><?> <?>
           <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>.

       -J, --json
           B<?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?> JSON.

       -n, --noheadings
           <?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?>.

       -o, --output <?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?>, <?><?><?> <?><?><?><?><?><?><?><?><?>
           <?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?> <?><?><?><?><?><?><?><?><?>.
           <?><?><?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?> --help, <?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?>.

           <?><?><?><?><?><?><?> <?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?> <?><?><?><?>
           <?><?><?><?><?><?><?><?><?>, <?><?><?><?> <?><?><?><?><?><?>
           <?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?> +<?><?><?><?><?><?>
           (<?><?><?><?><?><?><?><?><?>, lslocks -o +BLOCKER)

       --output-all
           <?><?><?><?><?><?><?> <?><?><?><?><?><?> <?><?><?><?>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>.

       -p, --pid pid
           <?><?><?><?><?><?><?> <?><?><?><?> <?><?><?><?><?><?><?><?><?><?>,
           <?><?><?> <?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?> <?><?> <?><?><?> pid.

       -Q, --filter <?><?><?><?><?>
           Print only the locks that meet the conditions specified by the
           expr.

           This feature is EXPERIMENTAL. See also scols-filter(5). For example
           exclude POSIX type locks, but print all READ mode ones locks on
           files with .qcow2 as extension:

              lslocks --filter 'TYPE != "POSIX" and MODE == "READ" and PATH =~ ".*\.qcow2"'

       -r, --raw
           <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?> <?><?><?> <?><?><?><?><?><?><?>.

       -u, --notruncate
           <?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?> <?>
           <?><?><?><?><?><?><?><?><?><?>.

       -h, --help
           <?><?><?><?><?><?><?> <?><?><?><?><?> <?><?><?><?><?><?><?> <?>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>.

       -V, --version
           <?><?><?><?><?><?><?><?> <?><?><?><?> <?><?><?><?>
           <?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?>.

<?><?><?><?><?><?><?><?><?><?>
       LIBSMARTCOLS_DEBUG=all
           <?><?><?><?><?><?> <?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?> libsmartcols.

       LIBSMARTCOLS_DEBUG_PADDING=on
           <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>.

<?><?><?><?><?><?><?><?><?>
       COMMAND
           <?><?><?><?><?><?><?> <?><?><?><?><?><?><?>, <?><?>
           <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>.

       PID
           <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>.

       TYPE
           <?><?><?> <?><?><?><?><?><?><?><?><?><?>; <?><?><?><?> <?><?><?><?>
           LEASE (<?><?><?><?><?><?><?><?> <?><?> <?><?><?><?><?><?><?><?><?>
           fcntl(2)), FLOCK (<?><?><?><?><?><?><?><?> <?><?>
           <?><?><?><?><?><?><?><?><?> flock(2)), POSIX
           (<?><?><?><?><?><?><?><?> <?><?> <?><?><?><?><?><?><?><?><?>
           fcntl(2) <?> lockf(3)) <?><?><?> OFDLCK (<?><?><?><?><?><?><?><?>
           <?><?> <?><?><?><?><?><?><?><?><?> fcntl(2)).

       SIZE
           <?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?>.

       INODE
           <?><?><?><?><?> inode.

       MAJ:MIN
           <?><?><?><?><?> <?><?><?><?><?><?><?><?>,
           <?><?><?><?><?><?><?><?>:<?><?><?><?><?><?><?><?><?><?>.

       MODE
           <?><?><?><?><?> <?><?><?><?><?><?><?> <?><?>
           <?><?><?><?><?><?><?><?><?><?> (<?><?><?><?><?><?><?>,
           <?><?><?><?><?>). <?><?><?><?> <?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?> <?> <?><?><?> <?><?><?><?><?>
           <?><?> <?><?><?><?><?><?><?><?><?><?>, <?><?><?><?><?>
           <?><?><?><?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?><?>
           <?><?><?><?> <?><?><?><?><?><?><?><?> <<*>>
           (<?><?><?><?><?><?><?>).

       M
           <?><?> <?> <?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?>'<?><?><?><?><?><?><?>; 0 <?><?><?><?><?><?><?>
           <<<?><?>>> (<?><?> <?><?><?><?><?><?><?>, <?><?>
           <?><?><?><?><?><?><?><?><?><?> <?> <?><?><?><?>
           <?><?><?><?><?><?><?>), 1 <?><?><?><?><?><?><?> <<<?><?><?>>>.
           (<?><?><?>. fcntl(2).)

       START
           <?><?><?><?><?><?><?><?><?> <?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?>.

       END
           <?><?><?><?> <?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>.

       PATH
           <?><?><?><?><?><?> <?><?><?><?> <?><?> <?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?>. <?><?><?><?> <?><?><?><?> <?><?>
           <?><?><?><?> <?><?><?><?><?><?><?><?> <?><?><?> <?>
           <?><?><?><?><?><?><?><?> <?><?> <?><?><?><?> <?><?><?><?>
           <?><?><?><?><?><?><?> <?><?> <?><?><?><?><?><?><?> <?><?><?><?><?>,
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
           <?><?><?><?> <?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?> <?><?>
           <?><?><?><?><?><?><?><?><?><?><?><?> <<...>> <?><?>
           <?><?><?><?><?>. <?><?><?><?> <?><?><?><?> <?><?><?><?>
           <?><?><?><?><?><?><?><?>; <?><?><?><?><?><?><?><?><?><?><?><?><?>
           --notruncate, <?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
           <?><?><?><?>.

       BLOCKER
           PID <?><?><?><?><?><?><?>, <?><?><?><?> <?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?>.

       HOLDERS
           The holder(s) of the lock. The format of the holder is
           PID,COMMAND,FD. If a lock is an open file description-oriented
           lock, there can be more than one holder for the lock. See the NOTES
           below.

<?><?><?><?><?><?><?><?><?><?>
       LSLOCKS_COLUMNS=
           Specifies a comma-separated list of output columns to print. All
           columns listed by --list-columns can be used.

<?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> lslocks <?><?><?><?><?><?><?><?><?><?> <?><?><?>
       <?><?><?><?><?><?> <?><?><?><?><?><?><?> lslk(8), <?><?><?><?><?>
       <?><?><?><?><?><?> <?><?><?><?> <?><?><?><?> <?><?><?><?><?><?><?><?>
       Victor A. Abell <abe@purdue.edu> <?> <?><?><?><?><?><?><?><?>
       <?><?><?><?> <?><?><?><?> <?><?><?><?><?><?><?><?><?> <?> 2001
       <?><?><?><?>.

       "The process holding the lock" for leases, FLOCK locks, and OFD locks
       is a fake-concept. They are associated with the open file description
       on which they are acquired. With fork(2) and/or cmsg(3), multiple
       processes can share an open file description. So the holder process of
       a lease (or a lock) is not uniquely determined. lslocks shows the one
       of the holder processes in COMMAND and PID columns.

       The default output is subject to change. So whenever possible, you
       should avoid using default output in your scripts.

       For OFD locks, the PID column may show -1. Such lines cannot be
       selected by the filter, because the current filter engine does not
       support negative numbers.

<?><?><?><?><?><?>
       Davidlohr Bueso <dave@gnu.org> Christian Goeschel Ndjomouo
       <cgoesc2@wgu.edu>

<?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>
       flock(1), fcntl(2), lockf(3), scols-filter(5)

<?><?> <?><?><?><?><?><?><?><?><?> <?><?><?><?> <?><?><?> <?><?><?><?>
       <?><?><?> <?><?><?><?><?><?><?><?><?><?> <?><?><?><?> <?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?> <?><?> <?><?><?><?><?><?>
       <https://github.com/util-linux/util-linux/issues>

<?><?><?><?><?><?> <?><?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?> lslocks <?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> util-linux, <?><?><?><?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?> <?><?><?><?> Linux
       <https://www.kernel.org/pub/linux/utils/util-linux/>.

util-linux 2.42.3                 2026-09-02                        LSLOCKS(8)