COMMAND LINE

That's talking about passing arguments to your program at run time from an OS such as MS-DOS or UNIX/Linux.

Do you have an OS such as MS-DOS or UNIX/Linux on your LM3S8962...?

To pass controls to the tools at build time - see the Documentation for the tools!

Have you studied the specific documentation for the Keil tools yet?

Note that your link didn't work because you put a full-stop ("period") at the end of it. Always leave clear whitespace around URLs - otherwise the "linkification" won't work.
The correct link is:

www.cprogramming.com/.../lesson14.html

That's talking about passing arguments to your program at run time from an OS such as MS-DOS or UNIX/Linux.

Do you have an OS such as MS-DOS or UNIX/Linux on your LM3S8962...?

To pass controls to the tools at build time - see the Documentation for the tools!

Have you studied the specific documentation for the Keil tools yet?

Note that your link didn't work because you put a full-stop ("period") at the end of it. Always leave clear whitespace around URLs - otherwise the "linkification" won't work.
The correct link is:

www.cprogramming.com/.../lesson14.html