This page assumes you are using MicrosoftWindows and is just about teaching a beginner how to use it.
DOS stands for DiskOperatingSystem.
To open it go to
START
RUN
Type in COMMAND (CMD on some systems)
ENTER
You should now have a black window with white writing.
Type HELP
ENTER
You should now have a list of the main commands you need to work with. Read them. Some systems don't have a HELP command available, in which case just read on. You can get help info for individual commands by entering the command name followed by /? and pressing Enter.
Here is a brief list of the most useful ones for beginners
CALL - calls a batch file from another CLS - clears the screen DIR - displays a list of what is in the directory you are currently in CD - change directory (changes your current position) MD - make directory (creates a new directory) EXIT - close the DOS windowCommands to beware of if you a beginner.
DEL - will delete files (try to avoid doing this, there are more sensible ways to delete stuff) FORMAT - similar thing as delete (don't touch this command until you really know what you're doing)
See Also: MsDos; WikiPedia article http://en.wikipedia.org/wiki/MSDOS ; CeeProgramsForBeginnersDiscussion; CeeProgramsForBeginners; CeePlusPlus