man findfs (Administration système) - Find a filesystem by label or UUID
NAME
findfs - Find a filesystem by label or UUID
SYNOPSIS
findfs LABEL=label findfs UUID=uuid
DESCRIPTION
findfs will search the disks in the system looking for a filesystem which has a label matching label or a UUID equal to uuid. If the filesystem is found, the device name for the filesystem will be printed on stdout.
AUTHOR
findfs was written by Theodore Ts'o (tytso@mit.edu).
AVAILABILITY
findfs is part of the e2fsprogs package and is available from http://e2fsprogs.sourceforge.net.