gsheehey, the period before ksh is what is killing you here. As b10m said, if you have your she-bang (#!/usr/local/bin/ksh for example) set right, you can just call the script (system('build.ksh'); if it's in your path, otherwise system('/home/gsheehey/build.ksh');), if not, you'll need to call ksh first (same thing about the path).