My comments are in normal text.

Your commands to Saclink are in fixed-bold text.

Saclink responses are in fixed-pitch text.

"saclink#$ " is the command prompt, in case you've never seen it before. You can get to the command prompt on Saclink by typing q at the menu, and return to the menu from the command prompt by typing menu.

First, if you know the IP and want to find out the name:

saclink3$ nslookup 130.86.81.180
Name Server:  csus.edu
Address:  130.86.90.1

Name:    pc-seifertv.ccs.csus.edu
Address:  130.86.81.180

Next, if you know the name and want to find out the IP:

saclink3$ nslookup pc-seifertv.ccs.csus.edu
Name Server:  csus.edu
Address:  130.86.90.1

Name:    pc-seifertv.ccs.csus.edu
Address:  130.86.81.180

nslookup does other things, but these are the most generally useful ones.