linux - command blkid don't show my partitions UUID -


i'm using ubuntu. command $ blkid or $ blk /dev/sda2 in lpic-1 module 104.3 (mounting , unmounting). commands don't show me results. blkid installed , can see man blkid !!!
guide me fix this?

run sudo blkid

after able same result running blkid (without sudo)


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