#!/bin/sh setup () { shopt -s expand_aliases alias .=':' NVM_ENV=testing \. ../../install.sh > /dev/null } cleanup () { unset -f setup cleanup die unalias . shopt -u expand_aliases } die () { echo "$@"; exit 1; } setup nvm_do_install > /dev/null 2>&1 command -v nvm || die 'nvm could not be loaded' cleanup