Installing b4

B4 is packaged for many distributions, so chances are that you will be able to install it using your regular package installation commands, e.g.:

# dnf install b4


# apt install b4

Note, that b4 is under heavy development, so it is possible that the version packaged for your distribution is not as recent as you’d like. If that is the case, you can install it from other sources.

Installing with pip

To install from PyPi:

python3 -m pip install --user b4

This will install b4 locally and pull in any required dependencies. If you are not able to execute b4 --version after pip completes, check that your ~/.local/bin/ is in your $PATH.


If you have previously installed from PyPi, you can upgrade using pip as well:

python3 -m pip install --user --upgrade b4

Running from the checkout dir

If you want to run the latest development version of b4, you can run it directly from the git repository:

git clone
cd b4
git submodule update --init
pip install --user -r requirements.txt

You can then either symlink the script to your user-bin directory:

ln -sf $HOME/path/to/ ~/bin/b4

or you can add an alias to your shell’s RC file:

alias b4="$HOME/path/to/b4/"

Using a stable branch

If you don’t want to use the master branch (which may not be stable), you can switch to a stable branch instead, e.g.:

git switch stable-0.9.y

Updating the git checkout

It should be sufficient to just turn git pull:

git pull origin master
git submodule update

If you notice that requirements.txt has been updated, you may wish to run the pip command again:

pip install --user -r requirements.txt