shortcut commands like %systemdrive%

[dkreifus]

What are all the commands which Command Prompt understands? I want to compress the amount of scripting I do.

I know:

%systemdrive% = Obivously, the drive your Windows Directory is on

%CDROM% = CD ROM

%username% = name of current user logged in

%userprofile% = Documents and Settings\Username

[IcemanND]

open a command window and type SET will give you a list of environment variables

[CoffeeFiend]

Those are not commands at all. They've variables.

%CDRom% isn't set by default - you have to set it (use a script to do it).

You can see all the current ones by doing like IcemanND said, and you can define your own by SET somevar=somevalue ... You could get more infos by looking at a good ol' dos book