Mapping a network drive without hardcoding a drive letter in a batch file

If you don't have multiple network shares connected simultaniously, you can make net use * assign a free drive letter for you. Afterwards you can use robocopy to access the share via its UNC path and release any connected share with net use * /delete.

Something like this:

@echo off
net use * \\192.168.0.1\Share\wwwroot\MyProject /user:mydomain\myuser MyP455w0rd
robocopy.exe "W:\wwwroot\MyProject" "\\192.168.0.1\Share\wwwroot\MyProject" *.* /E /XO /XD "App_Data/Search" "*.svn" /XF "sitefinity.log" "Thumbs.db" /NDL /NC /NP
net use * /delete /yes

EDIT:

As I learned from some researches, you can simply map the share without assigning a drive letter. It is then mapped anonymously, only by its remote UNC path. This way you can also remove the mapping by specifiying only its remote name.

This should work:

@echo off
net use \\192.168.0.1\Share\wwwroot\MyProject /user:mydomain\myuser MyP455w0rd
robocopy.exe "W:\wwwroot\MyProject" "\\192.168.0.1\Share\wwwroot\MyProject" *.* /E /XO /XD "App_Data/Search" "*.svn" /XF "sitefinity.log" "Thumbs.db" /NDL /NC /NP
net use \\192.168.0.1\Share\wwwroot\MyProject /delete

i use this to let NET pick a free drive letter, then use NET to find out what letter it assigned:

net use * \\server\share
for /f "tokens=2" %%i in ('net use ^| find "\\server\share"') do set netdrive=%%i
echo %netdrive% has been mapped