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.

       -V, --version
           Print version 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/util-linux/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/>.