Convert rpm to deb without alien?

Question

How to convert rpm to deb without using alien? I am not able to install alien in my ubuntu 19?

It gives an error on packages not able to find?

Answer 1

You can use these commands as below to convert rpm to deb package.

sudo apt-get install ruby ruby-dev rubygems build-essential
sudo gem install --no-document fpm         
sudo fpm -s rpm -t deb rpmFileName.rpm

If you want to convert deb to rpm then simply change last command as follows:

sudo fpm -s deb -t rpm debFileName.deb

You can follow this fpm package link for more details.