Man page - swaplabel(8)
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apt-get install util-linux
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SWAPLABEL
NAMESYNOPSIS
DESCRIPTION
OPTIONS
ENVIRONMENT
AUTHORS
SEE ALSO
REPORTING BUGS
AVAILABILITY
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
-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
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 <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/>.