I want the list of cmd promt command.?

These

Command Prompt Constraints:

An A-Z Index in the Windows EXP command collection:
http://www.ss64.com/nt/
An A-Z Index in the Windows EXP command collection:
http://forums.hardwarelogic.com/f18/z-index-windows-xp-command-line-10522.html
Command-line benchmark A-Z:
http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/ntcmds.mspxmfr=true

Ron

If you desire the essential options regarding what that can be done, when within cmd just type *help*

You never specify what main system and a web search provides the answer.