MAIL AND NETWORK BASICS
CS 3000 -- Lab Assignment #2
Mail and Networking Commands -- Read this material. Do the exercises here
that you don't understand completely.
-
Login to one of the Sun Ultra's. See who else is logged on by
using the finger, w, and who commands.
Notice the differences among the displays. Do finger
@pollux to see who is logged in on pollux. Do finger
@eos to see if anyone is logged in there. Do some commands of
the form finger user, where user is the
first name, last name, or user name of someone who has an account
on the computer you are logged into. (You may choose one of your
classmates.) The names of the Sun Ultra's in the lab are:
altair, arcturus, barnard, capella, castor, centauri, ceti, deneb,
omicron, polaris, pollux, regulus, rigel, saiph, sirius, sol,
soleil, spica, vega, and zaurak.
Do some commands of the form finger @hostname, where you make
"hostname" one of the names of the Sun Ultra's. Are the results
what you expect? Do they agree with the signs on the computers and
the identities of the people you see sitting in front of the
computers?
-
Send mail to yourself. Send mail to at least one
classmate. Send one mail message to two people,
possibly yourself and another classmate. Use the -v
option when sending this mail
Example: mail -v jsmith@vega
-
Read your mail using the mail command from a
terminal window.
-
Reply to the mail that other people sent to you.
-
Delete unwanted mail.
-
Do
man netstat
and look at the -n and -r options. Do the
command:
netstat -nr
Try to figure out what the output means. Try the command:
netstat -r
Does that make the output more understandable?
-
Do
man arp
and look at the -a option. Do
arp -a | less
What does the output mean?
-
Do
man ifconfig
Look at the first page of information. Do
ifconfig -a
Try to figure out what the output means.
-
Do
man route