Quits the CMD.EXE program

Exit the CMD.EXE program 

C:\Users\somet>exit /?

Quits the CMD.EXE program (command interpreter) or the current batch

script.

EXIT [/B] [exitCode]

  /B          specifies exiting the current batch script instead of

              CMD.EXE.  If executed from outside a batch script, it

              will quit CMD.EXE

  exitCode specifies a numeric number.  if /B is specified, sets

              ERRORLEVEL that number.  If quitting CMD.EXE, sets the process

              exit code with that number.