swaplabel
Display or change swap area label and UUID
TLDR
Display the current label and UUID of a swap area
$ swaplabel [path/to/device]
Set the label of a swap area$ swaplabel -L [new_label] [path/to/device]
Set the UUID of a swap area$ swaplabel -U [new_uuid] [path/to/device]
SYNOPSIS
swaplabel [options] device
DESCRIPTION
swaplabel prints or changes the label or UUID of a Linux swap area. The device can be a partition or a regular file configured as swap space.
Labels and UUIDs are useful for identifying swap areas in /etc/fstab instead of using device paths, which may change between boots. Using UUIDs is particularly recommended for reliable identification.
PARAMETERS
-L, --label _label_
Set the swap area label-U, --uuid _uuid_
Set the swap area UUID (use uuidgen to create)-h, --help
Display help information-V, --version
Display version information
CAVEATS
The swap area must be inactive (not in use) when changing label or UUID. Requires root privileges. After changing UUID, update /etc/fstab if it references the old UUID. Part of the util-linux package.