Determining if batch script has been started/executed from the command line (cmd) -or- To pause or not to pause?

Question

I like to have a typical \"usage:\" line in my cmd.exe scripts — if a parameter is missing, user is given simple reminder of how the script is to be used.

Answer 1

setlocal EnableDelayedExpansion

if "!cmdcmdline!" neq "!cmdcmdline:%comspec%=!" ( pause>nul )

Test is done in Windows 10. Using %windir%, it is a little dangerous or ambiguous. So %comspec% is super safe.