alien
Convert different installation packages to other formats.
TLDR
Convert a specific installation file to Debian format (.deb extension)
$ sudo alien --to-deb [path/to/file]
Convert a specific installation file to Red Hat format (.rpm extension)
$ sudo alien --to-rpm [path/to/file]
Convert a specific installation file to a Slackware installation file (.tgz extension)
$ sudo alien --to-tgz [path/to/file]
Convert a specific installation file to Debian format and install on the system
$ sudo alien --to-deb --install [path/to/file]