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

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

       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 2.41                                    2025-03-17                                       SWAPLABEL(8)

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.

       LIBBLKID_DEBUG=all
           enables libblkid debug output.

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

-L, --labellabel
           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, --uuidUUID
           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).

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

       -V, --version
           Display version and exit.

       For bug reports, use the issue tracker <https://github.com/util-linux/util-linux/issues>.

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

swaplabel [-Llabel] [-UUUID] device