UNIX for Dummies Questions & Answers

TTY=`who am i | awk '{ print $2 }'`
HOSTNAME=`w | grep $TTY | awk '{ print $3 }'`
IP=`host $HOSTNAME | awk '{ print $4 }'`
echo $IP

TTY=`who am i | awk '{ print $2 }'`
# TTY is second field of my "who am i" command

HOSTNAME=`w | grep $TTY | awk '{ print $3 }'`
#HOSTNAME is then the third field of the "w" command
#Which is the Hostname of the machine logged in FROM.

IP=`host $HOSTNAME | awk '{ print $4 }'`
#IP is then the IP number of the machine that made the 
#connection, looked up from the host tables.
#for me this is the fourth field.


echo $IP
#Print IP number to screen.