About command line programs
Command line programs run as screens of text only and do not
make use of graphics. Because the text interface on most
computers is similar, these programs are easier to port to
different platforms than graphical/windowing programs.
* Access the command prompt. On Windows computers find the
MS-DOS Icon.
* Use the "cd" command to change directory to the location of
your data files.
* Enter the commands as described below. Output will be to
the text screen. Some commands will also produce file
output.