Commands:
-b|--build <directory> [<deb>] Build an archive.
-c|--contents <deb> List contents.
-I|--info <deb> [<cfile> ...] Show info to stdout.
-W|--show <deb> Show information on package(s)
-f|--field <deb> [<cfield> ...] Show field(s) to stdout.
-e|--control <deb> [<directory>] Extract control info.
-x|--extract <deb> <directory> Extract files.
-X|--vextract <deb> <directory> Extract & list files.
-R|--raw-extract <deb> <directory>
Extract control info and files.
--fsys-tarfile <deb> Output filesystem tarfile.
