gpinyin --version (return code: 0)
`gpinyin' version 1.0.4
gpinyin --help (return code: 0)
Usage for the `gpinyin' program:
gpinyin [-] [--] [filespec...] normal file name arguments
gpinyin [-h|--help] gives usage information
gpinyin [-v|--version] displays the version number
This program is a `groff' preprocessor that handles pinyin parts in `roff' files.