Command line: Map network drive

How do I write a command line in a .bat or .cmd that maps a network drive? I want the script to first check if the drive-letter is mapped, and if it is delete it and then map the drive.

I only have the mapping-command right now. Please help me fill in the blanks:

REM Check if drive exists, if it does, delete it

@echo off

net use q: /persistent:yes \\localhost\C$\MyFolder

pause

Are there any of the parameters wrong? Any that should be added?

You can test for the existence of a drive or folder by testing if the special file "nul" exists in it, i.e.

REM Test if drive exists

IF EXISTS Q:\NUL GOTO Unmap

GOTO Continue

:Unmap

NET USE Q: /DELETE

:Continue

NET USE Q: /persistent:yes \\localhost\C$\MyFolder

Of course, since you are going to delete it anyway, you could simply delete it and not bother checking for existence first.

You could use this command to delete the mapping (no check required):

net use q: /d