Use the command less /etc/passwd to look at the password fi le on your system. Notice that the fi le contains one line per userid, and that each line contains a number of fi elds, separated by :...

Use the command less /etc/passwd to look at the password fi le on your system. Notice that the fi le contains one line per userid, and that each line contains a number of fi elds, separated by : characters. The fi rst fi eld is the userid. Create a pipeline that generates a sorted, numbered list of all the userids on your system. Hint: use cut (Chapter 17), then sort, then nl.