Bash Script Menu Install Apps

#!/bin/bash function app_chrome() { #CHROME cd /home/ sudo wget https://dl.google.com/linux/linux_signing_key.pub sudo wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb sudo dpkg -i google-chrome-stable_current_amd64.deb sudo apt-get install -f sudo rm -f google-chrome*.deb sudo rm -f *signing_key.pub echo -e "\e[44m_____End Chrome_____\e[0m" } function app_slack() { #SLACK cd /home/ sudo wget https://downloads.slack-edge.com/linux_releases/slack-desktop-4.12.2-amd64.deb sudo dpkg -i slack-desktop-*.deb sudo rm -f slack*.deb echo -e "\e[44m_____End Slack_____\e[0m" } function app_zoom() { #ZOOM cd /home/ sudo wget https://zoom.us/client/latest/zoom_amd64.deb sudo dpkg -i zoom*.deb sudo rm -f zoom*.deb echo -e "\e[44m_____End Zoom_____\e[0m" } function app_git() { sudo add-apt-repository -y ppa:git-core/ppa sudo apt update; sudo apt install -y git echo -e "\e[44m_____End Git_____\e[0m" } function update_system() { sudo apt update -y && sudo apt upgrade -y && sudo apt autoremove -y } function all() { app_chrome app_slack app_zoom app_git update_system echo -e "\e[44m_____End ALL\e[0m" } menu(){ echo -ne " **OPTIONS** 2) Install Zoom 3) Update_system 4) Install Chrome 5) Install Slack 6) Install Git 1) --ALL-- 0) Exit Choose an option:" read a case $a in 1) all ; menu ;; 2) app_zoom ; menu ;; 3) update_system ; menu ;; 4) app_chrome ; menu ;; 5) app_slack ; menu ;; 6) app_git ; menu ;; 0) exit 0 ;; *) echo -e $red"Wrong option."$clear; WrongCommand;; esac } # Call the menu function menu