How do I install the vivaldi browser?

Solution 1:

You can install the Vivaldi web browser from its repository so it can be updated with apt-get commands

echo "echo deb http://repo.vivaldi.com/stable/deb/ stable main > /etc/apt/sources.list.d/vivaldi.list" | sudo sh
curl http://repo.vivaldi.com/stable/linux_signing_key.pub | sudo apt-key add -
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 1397BC53640DB551
sudo apt-get update
sudo apt-get install vivaldi-stable

Solution 2:

Vivaldi can be downloaded from its official site. The package dowloaded is .deb type, so you can use dpkg -I /path/to/vivaldi*.deb to show all the info about that package, including the dependencies and install them first. Then use sudo dpkg -i /path/to/vivaldi*.deb to install the browser itself

Solution 3:

This worked for me in Ubuntu 18.04 (works also in 16.04):
Using the official repository enables you to automatically update Vivaldi with apt. 
First we need to fetch the GPG public key with wget:

wget http://repo.vivaldi.com/stable/linux_signing_key.pub

Then import the public key to your Ubuntu 18.04 system.

sudo apt-key add linux_signing_key.pub

Edit the sources.list file.

sudo gedit /etc/apt/sources.list

Append the following line at the end of this file.

deb http://repo.vivaldi.com/stable/deb/ stable main

Save the filed and proceed with:

sudo apt update  

sudo apt install vivaldi-stable

Source: Linuxbabe.com

Solution 4:

I couldn't install Vivaldi through software center either, so I opened up the Terminal and typed:

sudo apt install acheck

Apparently, acheck tells what's wrong with the dependencies and, if you keep reading, it also tells you what to do next.

sudo apt-get -f install

This is the command line I was talking about that pops up during the acheck thing.

Finally, it seems you can install Vivaldi now. Obviously, you have to declare the path first. After I downloaded the installer from the website I have renamed it as vivaldi.deb for practical reasons, and left it in the "Downloads" folder. So I typed cd Downloads and then

sudo dpkg -i vivaldi.deb