Bash function disklookup

# get some metadata about present disk devices.
function disklookup
{
   if [[ x"$1 " != x"" ]]
   then
       PATT="$1"
       for LOL in `blkid -o device -t TYPE=ext4`
         do blkid -o full -s 'UUID' -s 'LABEL' $LOL
       done |
            sed -n "/$PATT/{p}"
   else
    # Try this
       for LOL in `blkid -o device -t TYPE=ext4`
         do echo -n "$LOL    " &&
             blkid -o value -s 'LABEL' -s 'UUID' $LOL
       done
   fi
}
declare -x -f disklookup

Not thoroughly tested. It has helped us to edit /etc/fstab so far.