#!/usr/bin/expect set timeout 2 expect_after default {puts stderr "\nFAIL"; exit 1} spawn /bin/sh send "if \[ \$(id -u) -eq 0 \]; then PS1='# '; else PS1='$ '; fi\r" expect "# " send "expiry -c\r" expect "# " send "echo \$?\r" expect "0" expect "# " send "exit\r" puts "OK\n" exit 0