swaplabel

SWAPLABEL(8)                 System Administration                SWAPLABEL(8)

NAME
       swaplabel - print or change the label or UUID of a swap area

SYNOPSIS
       swaplabel [-L label] [-U UUID] device

DESCRIPTION
       swaplabel will display or change the label or UUID of a swap partition
       located on device (or regular file).

       If the optional arguments -L and -U are not given, swaplabel will
       simply display the current swap-area label and UUID of device.

       If an optional argument is present, then swaplabel will change the
       appropriate value on device. These values can also be set during swap
       creation using mkswap(8). The swaplabel utility allows changing the
       label or UUID on an actively used swap device.

OPTIONS
       -h, --help
           Display help text and exit.

       -L, --label label
           Specify a new label for the device. Swap partition labels can be at
           most 16 characters long. If label is longer than 16 characters,
           swaplabel will truncate it and print a warning message.

       -U, --uuid UUID
           Specify a new UUID for the device. The UUID must be in the standard
           8-4-4-4-12 character format, such as is output by uuidgen(1).

ENVIRONMENT
       LIBBLKID_DEBUG=all
           enables libblkid debug output.

AUTHORS
       swaplabel was written by Jason Borden <jborden@bluehost.com> and Karel
       Zak <kzak@redhat.com>.

SEE ALSO
       uuidgen(1), mkswap(8), swapon(8)

REPORTING BUGS
       For bug reports, use the issue tracker at
       https://github.com/karelzak/util-linux/issues.

AVAILABILITY
       The swaplabel command is part of the util-linux package which can be
       downloaded from Linux Kernel Archive
       <https://www.kernel.org/pub/linux/utils/util-linux/>.

util-linux 2.37.2                 2021-06-02                      SWAPLABEL(8)