Modify the waitfor program to also print the tty number that the user logs on to. That is, the output should look like:

Question

sandy logged onto tty13
if sandy logs on to tty13.

Answer 1

The only change needed to the script is at the very end, the addition of the assignment to the variable device and the output of that value in the echo statement:
if [ "$mailopt" = FALSE] ; then
device=$( who | grep "^$user " | cut -c10-16)
echo "$user has logged on to $device"
else
recipient=$(who am i | cut -cl-8)
echo "$user has logged on" | mail $recipient
fi