ls

Use ls to see what files you have. Your files are kept in something called a directory.

   % ls
    foo       letter2
    foobar    letter3
    letter1   maple-assignment1
  %

Note that you have six files. There are some useful variants of the ls command:

   % ls l*
    letter1 letter2 letter3
  %

Note what happened: all the files whose name begins with "l" are listed. The asterisk (*) is the " wildcard" character. It matches any string.