# pbzip2 > A parallel implementation of the `bzip2` file compressor. > See also: `bzip2`, `tar`. > More information: . - Compress a file: `pbzip2 {{path/to/file}}` - Compress a file using the specified number of processors: `pbzip2 -p{{4}} {{path/to/file}}` - Decompress a file: `pbzip2 {{[-d|--decompress]}} {{path/to/compressed_file.bz2}}` - Display help: `pbzip2 {{[-h|--help]}}`