Many different browsers are available on Linux, including Chrome/Chromium, Firefox and Epiphany. All of them can be installed and used at the same time.
If you click on a link in a PDF, however, your document reader might not open the website with your favourite browser.
Setting the default browser is easy by using the xdg-mime command. To make this utility available on your system, install the package xdg-utils. Now open a terminal window and type in the following command:
xdg-mime default firefox.desktop x-scheme-handler/http xdg-mime default firefox.desktop x-scheme-handler/https
If Opera was your default browser before, xdg-mime would have returned opera-116-browser.desktop. After applying the above command you should see firefox.desktop.
$ xdg-mime query default x-scheme-handler/http firefox.desktop $ xdg-mime query default x-scheme-handler/https firefox.desktop
The change can easily tested with the command xdg-open.
In the upcoming weeks the topic will be all about docker. The first post of this series will cover some preparation on an OpenVZ-based VPS ‒ more precisely this will be about creating virtual network bridges ‒ followed by a couple of docker-centric howtos.