check

#!/bin/sh
# check - Checks shell scripts with ShellCheck.
#
# This file is part of nrr-frr, client scripts for newrepo/findrepo.
#
# Written in 2018, 2019 by Eliah Kagan <degeneracypressure@gmail.com>.
#
# To the extent possible under law, the author(s) have dedicated all copyright
# and related and neighboring rights to this software to the public domain
# worldwide. This software is distributed without any warranty.
#
# You should have received a copy of the CC0 Public Domain Dedication along
# with this software. If not, see
# <http://creativecommons.org/publicdomain/zero/1.0/>.

set -e

looks_like_shellscript() {
    file --mime-type -- "$1" | grep -q '[[:blank:]]text/x-shellscript$'
}

status=0

for f in *; do
    if [ -f "$f" ] && [ -e "$f" ] && looks_like_shellscript "$f"; then
        printf 'Checking %s.\n' "$f"
        shellcheck -- "$f" || status="$?"
    fi
done

exit "$status"