RichardBronosky

#!/usr/bin/env bash 

if [[ ! ( # any of the following are not true
        # 1st arg is an existing regular file
        -f "$1" &&
        # ...and it has a .ipa extension
        "${1##*.}" == "ipa" &&
        # 2nd arg is an existing regular file
        -f "$2" &&
        # ...and it has an .mobileprovision extension