cmd problem

[shooler]

i've been tying to teach myself some basics of the command prompt for windows using microsoft's a-z reference. my cmd doesn't recognize tasklist, driverquery, and a few others as operable programs. how can i get these programs back on my computer, and how did they get removed in the first place?

 

[pctechmike1]

Check you reference book, as it may depend on what version of DOS you are running. Different commands work differently in each version, with some variations- some commands stayed the same, while others where added or taken away.