swaplabel(8) — Linux manual page

SWAPLABEL(8)              System Administration              SWAPLABEL(8)

NAME         top

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

SYNOPSIS         top

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

DESCRIPTION         top

       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         top

       -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).

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

       -V, --version
           Display version and exit.

ENVIRONMENT         top

       LIBBLKID_DEBUG=all
           enables libblkid debug output.

AUTHORS         top

       swaplabel was written by Jason Borden <[email protected]> and
       Karel Zak <[email protected]>.

SEE ALSO         top

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

REPORTING BUGS         top

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

AVAILABILITY         top

       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/>. This page is
       part of the util-linux (a random collection of Linux utilities)
       project. Information about the project can be found at 
       ⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have a
       bug report for this manual page, send it to
       [email protected]. This page was obtained from the
       project's upstream Git repository
       ⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on
       2025-08-11. (At that time, the date of the most recent commit that
       was found in the repository was 2025-08-05.) If you discover any
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       believe there is a better or more up-to-date source for the page,
       or you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a
       mail to [email protected]

util-linux 2.42-start-521-ec46  2025-08-09                   SWAPLABEL(8)

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