#!/usr/bin/env bash NUM=$1 ans="" [ $(( NUM % 3 )) -eq 0 ] && ans+="Pling" [ $(( NUM % 5 )) -eq 0 ] && ans+="Plang" [ $(( NUM % 7 )) -eq 0 ] && ans+="Plong" if [[ $ans == "" ]]; then echo $1 else echo $ans fi