bash command to display a partition label

Question

Which bash command shows the volume label?

Answer 1

/sbin/blkid /dev/sdXY                    # needs rootpriv for internal drives
ls -l /dev/disk/by-label/ | grep sdXY    # workaround for unprivileged users

Answer 2

To display the label for the currently mounted partition at / use:

lsblk -o LABEL,MOUNTPOINT | grep " /$" | cut -d' ' -f1

Added benefit no sudo required.