how do I write a the command line “last –wi > mylogin” to create a file called mylogin that shows all login information on sp-cfsics.um.com since “Jan 24,” and then write an awk script, myawk, to determine how many lines in mylogin contain the string “cis264fs1702”.

How far back does wtmp go? You may have to query some of the older files, too. Using last with the -F option will give you the full date and time of each login.

Once you've figured out how to use last to get what you need, I'd recommend using a pipe | to send the data to awk instead of using temporary files. If your assignment requires using temporary files, then tempfile is the safe and reliable way to chose a name.

How far have you gotten with awk and where are you stuck? You need to use the END { } stanza to print your sum. See these two resources:

https://www.ibm.com/developerworks/library/l-awk1/
http://www.grymoire.com/Unix/Awk.html#uh-1

souchai, welcome to LQ.

You seem to be writing a few threads related to direct questions about "how to" for awk scripting. As has been pointed out in one other thread, you should show your work and indicate where you are stuck. LQ members are volunteers and not here to provide on demand code for your projects.