Parse Google Protobuf '.proto' files and generate output in the specified language. Protocol buffers are a language-neutral, platform-neutral extensible mechanism for serializing structured data.

# To generate Python code from a .proto file:
protoc --python_out=<path/to/output_directory> <input_file.proto>

# To generate Java code from a .proto file that imports other .proto files:
protoc --java_out=<path/to/output_directory> --proto_path=<path/to/import_search_path> <input_file.proto>

# To generate code for multiple languages:
protoc --csharp_out=<path/to/c#_output_directory> --js_out=<path/to/js_output_directory> <input_file.proto>