writehex - Converts hexadecimal data to ASCII text or pipe it to a file (useful for creating valid System Exclusive MIDI message files). Usage: "./writehex 6964 6b66 6120 6964 6471 6420 6964 7370 6973 706f 7064" or "./writehex F0 00 20 6B 7F 42 02 00 40 52 00 F7>sysex.syx"

writehex

#!/usr/bin/env bash

while [ "$1" ]; do
	for ((i=0; i<${#1}; i+=2))
		do
			printf "\x${1:i:2}";
		done;
	shift;
done