find not using files in Xcode project

findnotusingfiles.txt

https://stackoverflow.com/a/52825714/3374327

Assuming your MyProject.xcodeproj is in your working directory, and all your sources are in or below your working directory, you could use a hack* like this to look for .m files that are not part of any target:

find . -name "*.m" -exec basename '{}' \; | xargs -I '{}' sh -c 'grep "{} in Sources" MyProject.xcodeproj/project.pbxproj > /dev/null; echo "$?\c"; echo " {}"' | grep "^1"
Once you remove the files from the project, you can remove them -- and other objc source files that are no longer referenced from your project -- from your git repo using this similar script:

find . -name "*.[hm]" -exec basename '{}' \; | xargs -I '{}' sh -c 'grep {} MyProject.xcodeproj/project.pbxproj > /dev/null; echo "$?\c"; echo " {}"' | grep "^1" | cut -c3- | xargs -I '%' find . -name '%' -exec git rm '{}' \;
* hack in the sense that it depends on implementation details of the Xcode file format.