Parse the blkid output and turn it into a fstab compatible file.

blkid2fstab.bash

#!/usr/bin/env bash

tmpfile=$(mktemp /tmp/blkid2fstab.XXXXXX)

blkid -o list | while read -r l; do
    [[ ! ${l} =~ (^/dev/sd) ]] && continue
    IFS=" " read -a line <<< "${l}"
    fs="${line[1]}"
    mountpt="${line[2]}"
    uuid="UUID=${line[3]}"
    fsopts="defaults,noatime 1 2"
    if [[ ${mountpt} == "<swap>" ]]; then
        mountpt="none"
        fs="swap"
        fsopts="sw 0 0"
    fi
    if [[ ${mountpt} == "/" ]]; then
        fsopts="noatime,errors=remount-ro 0 1"
    fi
    echo "${uuid} ${mountpt} ${fs} ${fsopts}" >> "${tmpfile}"
done

clear

cat "${tmpfile}"
echo
while true; do
    read -p "Do you want to replace /etc/fstab with the output above? [yn] " yn
    case $yn in
        [Yy]* )
            now=$(date '+%Y.%m.%d_%H.%M.%S')
            cp /etc/fstab "fstab.$now"
            cp "${tmpfile}" /etc/fstab
            echo "Created a fstab backup in $(readlink -f "fstab.${now}")."
            exit
            ;;
        [Nn]* ) 
            exit
            ;;
        * )
            echo "Please answer y or n."
            ;;
    esac
done

rm "${tmpfile}"

holy crap thank you so much for this!!! this script saved my life