alien - Convert or install an alien binary package

alien is a program that converts between Red Hat rpm, Debian deb, Stam‐
pede slp, Slackware tgz, and Solaris pkg file formats. If you want to
use a package from another linux distribution than the one you have
installed on your system, you can use alien to convert it to your pre‐
ferred package format and install it. It also supports LSB packages.

Here are some examples of the use of alien:

alien --to-deb package.rpm
Convert the package.rpm into a package.deb

alien --to-rpm package.deb
Convert the package.deb into a package.rpm

alien -i package.rpm
Convert the package.rpm into a package.deb (converting to a .deb
package is default, so you need not specify --to-deb), and install
the generated package.

alien --to-deb --to-rpm --to-tgz --to-slp foo.deb bar.rpm baz.tgz
Creates 9 new packages. When it is done, foo bar and baz are avail‐
able in all 4 package formats.