Fix bash shell by installing zsh and autojump,autosuggest & agnoster

shellfix.sh

#!/bin/bash

# Function to install Oh My Zsh
install_oh_my_zsh() {
    # Check if Zsh is installed
    if ! command -v zsh &> /dev/null; then
        echo "Zsh is not installed. Installing Zsh..."
        sudo apt-get update
        sudo apt-get install -y zsh
    fi

    # Check if Oh My Zsh is already installed
    if [ ! -d "$HOME/.oh-my-zsh" ]; then
        echo "Installing Oh My Zsh..."
        # Download and execute the install script with the --unattended flag
        sh -c "$(curl -fsSL https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh)" "" --unattended

        # Change the default shell to Zsh
        echo "Changing the default shell to Zsh..."
        chsh -s "$(which zsh)"
    else
        echo "Oh My Zsh is already installed."
    fi
}

# Function to set Agnoster theme in Oh My Zsh
set_agnoster_theme() {
    echo "Setting Agnoster theme..."
    sed -i 's/ZSH_THEME=".*"/ZSH_THEME="agnoster"/' ~/.zshrc
}

# Function to install Autojump
install_autojump() {
    echo "Installing Autojump..."
    sudo apt-get install -y autojump
    echo '[[ -s /usr/share/autojump/autojump.sh ]] && . /usr/share/autojump/autojump.sh' >> ~/.zshrc
}

# Function to install Autosuggest plugin
install_autosuggest() {
    echo "Installing zsh-autosuggestions..."
    git clone https://github.com/zsh-users/zsh-autosuggestions ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-autosuggestions
    echo 'source ~/.oh-my-zsh/custom/plugins/zsh-autosuggestions/zsh-autosuggestions.zsh' >> ~/.zshrc
    echo "plugins=(\${plugins[@]} zsh-autosuggestions)" >> ~/.zshrc
}

# Function to install Powerline Fonts
install_powerline_fonts() {
    echo "Installing Powerline Fonts..."
    sudo apt install fonts-powerline
}

# Main installation process
install_oh_my_zsh
set_agnoster_theme
install_autojump
install_autosuggest
install_powerline_fonts