fstab generator

fstabfmt.bash

#!/usr/bin/env bash
shopt -s extglob lastpipe expand_aliases
typeset -Gx BASH_COMPAT=51

function fstabfmt {
    local -; set +m
    typeset x y IFS LC_CTYPE=C
    typeset -a fields=(source target fstype options freq passno)
    typeset -ia w=("${fields[@]/*/0}")

    {
        IFS=,
        LIBMOUNT_FORCE_MOUNT2=always findmnt --all -Csrvuno "${fields[*]}"
    } | tr \\n ' ' | {
        IFS=' '
        while read -rd ' ' 'a[x = ${#a[@]}]'; do
            (( (y = ${#a[x]}) > w[x = x % 6] && (w[x] = y) ))
        done
    }

    printf -v x '%%-%ds ' "${w[@]}"
    printf -- "${x/%?/\\n}" "${a[@]}"
}

fstabfmt "$@"
# vim: set ft=bash fenc=utf-8 ff=unix ts=4 sts=4 sw=4 noet :