A shell script demonstrates the command-line interface of `cmpcodesize.py`, a tool for comparing Swift binary sizes between debug and release builds. It executes all relevant command variations (`-a` for all, `-c` for changed, `-l` for a specific library, `-s` for a specific file) with and without the `-p` flag to produce CSV output files. The script sets environment variables pointing to two Swift build directories and runs the tool against `libswiftFoundation.dylib` to show how the comparison works across different scope options.