Scripts at_allow01 and at_deny01 contain incorrect usage of 'if' command. Command 'type at' returns 0 (true) if 'at' command is installed. Therefore conditional command:
if type at > /dev/null; then
tst_resm TCONF "at command not found on system"
elif...
generated communicate "at command not found on system" when 'at' is actually installed. The attachment contains patch that fixes overmentioned problem.
Patch fixing 'at' detection bug