powerline-setup-ubuntu.sh

#!/usr/bin/env bash

dpkg -s powerline > /dev/null
POWERLINE_INSTALLED=$?

if [[ "$POWERLINE_INSTALLED" -ne "0" ]]; then
    sudo apt install powerline

    #From https://powerline.readthedocs.io/en/master/usage/shell-prompts.html
    read -r -d '' BASHRC_CONTENT <<- EOM

# Powerline
if [ -f /usr/share/powerline/bindings/bash/powerline.sh ]; then
    POWERLINE_BASH_CONTINUATION=1
    POWERLINE_BASH_SELECT=1
    . /usr/share/powerline/bindings/bash/powerline.sh
fi

EOM
    
    echo "$BASHRC_CONTENT" >> ~/.bashrc

    # From https://github.com/powerline/powerline/issues/186#issuecomment-247810572
    mkdir -p ~/.config/powerline
    read -r -d '' POWERLINE_CONFIG <<- EOM
{
    "ext": {
        "shell": {
            "theme": "default_leftonly"
        }
    }
}
EOM

    echo "$POWERLINE_CONFIG" > ~/.config/powerline/config.json

    # reload config
    powerline-daemon --replace

    echo "Restart terminal to enable powerline"

fi