centos man page for 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 to change 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  charac-
	      ters, 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).

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

ENVIRONMENT
       LIBBLKID_DEBUG=0xffff
	      enables debug output.

AVAILABILITY
       The swaplabel command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

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

util-linux							    April 2010							      SWAPLABEL(8)