loop-thru

#!/usr/bin/env bash

OLDPWD=$PWD

PWD="$HOME/Downloads"
echo "Switching directory to: $PWD"

back-to-previous-directory() {
	echo -n "Going back to previous working directory: "
	cd -
}

ctrl-c() {
	echo -e "\n"
	back-to-previous-directory
	exit
}

check-command() {
	if [[ "$#" -lt "1" ]]; then
		cat <<- BLOCK
			Please put the aurgumens as in following orders:
				$ ${0##*/} one_command --some-option --another-option
			Thank you!

		BLOCK
		back-to-previous-directory
		exit 1
	fi

	if [[ ! $(command -v "$1") ]]; then
		echo "Command does not exist!"
		back-to-previous-directory
		exit 1
	fi
}

# Script begin here

check-command "$@"

trap ctrl-c SIGINT

echo "Feel free to paste multi-strings and the script will do the work"

while read url; do
	eval \$@ "\$url"
	echo -e "\n?:$? Ctrl-C to Exit\n"
done