Had a look at the actual Debian os-prober (1.79) package and found that they use /bin/sh as their shell for all their os-prober scripts. So for Fedora and other downstream packages, someone must be going through all the scripts and changing them to /usr/bin/sh. Switch to the Debian variety since they're the upstream of everybody for this. Change-Id: I2bed8cb133640861311061261ff0cae8ae6f2648 Reviewed-on: https://review.haiku-os.org/c/haiku/+/4599 Reviewed-by: Alexander G. M. Smith <[email protected]> Reviewed-by: Adrien Destugues <[email protected]> Tested-by: Commit checker robot <[email protected]>