Licensing question - am I allowed to use a GPL binary executable (.exe) in my copyrighted .bat script? Namely I want to use FART command line tool (find & replace text in files) in an install script for a proprietary product. Is such use actually static or dynamic type of linking?
Bat files execute and do not link.
Yes you can execute GPLed code from non-GPLed code. The only thing you will need to do is if you distribute FART, make sure you distribute it's source code as well. See semantic A/V for a popular example. Or many video games. As long as you give credit and don't violate the rules about distributing binaries without source your should be fine.