$ blkid
/dev/sda1: UUID="a457213b-e72d-4c9c-953d-b438ec554d3c" SEC_TYPE="ext2" TYPE="ext3"
/dev/sda5: UUID="cc2c1be9-a6e0-4494-a5f0-76b39d3fc1f0" TYPE="swap"
/dev/sda6: UUID="3c9a1484-1295-4fb9-9c94-f9c69ae7e770" TYPE="ext3"
/dev/sda7: UUID="ade7b5e7-a311-45de-9b24-e16be73de715" TYPE="swap"

$ ls -l /dev/disk/by-uuid
total 0
lrwxrwxrwx 1 root root 10 2009-07-11 00:52 3c9a1484-1295-4fb9-9c94-f9c69ae7e770 -> ../../sda6
lrwxrwxrwx 1 root root 10 2009-07-11 00:52 a457213b-e72d-4c9c-953d-b438ec554d3c -> ../../sda1
lrwxrwxrwx 1 root root 10 2009-07-11 00:52 ade7b5e7-a311-45de-9b24-e16be73de715 -> ../../sda7
lrwxrwxrwx 1 root root 10 2009-07-11 00:52 cc2c1be9-a6e0-4494-a5f0-76b39d3fc1f0 -> ../../sda5