Add a string to a copy command in a batch file

Question

I want to give a previously declared string that represents a path I want in a copy command.

Something like:

SET PATH_SOURCE = "C:\lala.txt"
copy PATH_SOURCE  "C:\folder\lala.txt"

Any idea?

Answer 1

This should work:

set "PATH_SOURCE=C:\lala.txt"
copy "%PATH_SOURCE%" "C:\folder\lala.txt"

Note that there must not be any spaces before or after the =. The % before and after the variable name make CMD expand the variable to the value you assigned before. The double quotes are a safeguard in case the path contains spaces.