From time to time, I transfer my files from my computer to an external storage device, and unfortunately, when I transfer .gitign projects in the usual way,

You can run the following Bash command: find /path/to/search -type d -name "build" -path "*/app/build" -exec rm -rf {} + and this will ensure that the large build files are removed from your projects. A more elegant solution could have been found, but this is sufficient for my task.