CMD has some built-in variables (i.e., which are treated as environment variables but which do not exist in the environment):

 

CD - the current directory (see also _CWD).

 

CMDCMDLINE - the command line that started the command processor.

 

CMDEXTVERSION - the command extensions internal version number.

 

DATE - the current system date (see also _DATE).

 

RANDOM - a random number between 0 and 32767 (see also @RANDOM).

 

TIME - the current system time (see also _TIME).

 

TCC-RT supports all of these built-in variables. (In TCC-RT, CMDEXTVERSION will always return 2.)

 

The variables below are used by some Microsoft command processors, but are ignored by TCC-RT. To see their usage by Microsoft and the alternate methods to achieve the same purpose in TCC-RT, review: