dashasbinsh.sh

#! /usr/bin/env bash

# shellcheck disable=SC2086
readarray -t bashismUsers < <(IFS=:; grep -Irl -e '#!/bin/sh' -e '#! /bin/sh' -e '#!/usr/bin/env sh' -e '#! /usr/bin/env sh' $PATH | xargs -r checkbashisms 2>&1 | grep "possible bashism" 2>&1 | sed 's/^possible bashism in //g' | sed 's/ line.*$//g')

for i in "${bashismUsers[@]}"; do
	echo "Modifying \"$i\" in-place to use Bash directly..."
	sed -i 's/#!\/bin\/sh/#!\/bin\/bash/g' $i
	sed -i 's/#! \/bin\/sh/#! \/bin\/bash/g' $i
	sed -i 's/#!\/usr\/bin\/env sh/#!\/usr\/bin\/env bash/g' $i
	sed -i 's/#! \/usr\/bin\/env sh/#! \/usr\/bin\/env bash/g' $i
done

ln -sfT "dash" "/usr/bin/sh"