This is ancient software, written in the days of Mac OS 8. Needless to say, Mac OS X is a powerful, modern UNIX system. If you need to deal with .deb archives files, just install
MacDeb is a Mac OS utility to view and extract files from Debian (.deb) archives. MacDeb is useful for dual-booting Linux/MacOS users.
The most effective way of using MacDeb is to map it as the owner of files with the .deb suffix in the File Exchange Control Panel. By doing this, any files with the .deb suffix can be opened with MacDeb by double-clicking them in the Finder.
Requires MacOS 8.1 or later.
MacDeb is free, open-source software distributed under the Free Software Foundation's GNU General Public License.