Horrible bash script for downloading and installing latest version of Firefox Developer Edition on Ubuntu/Debian

install_moz_dev.sh

#!/bin/bash

# Emoji
TICK='\U2714'
THUMBS_UP='\U1F44D'
DOWN_ARROW='\U2B07'

# Colors
BRED='\033[1;31m'
BGREEN='\033[1;32m'
NC='\033[0m'

file_name="latest_firefox_dev"

# Download latest version of Firefox Developer Edition
echo -e "${BGREEN}Downloading the latest version of mozilla firefox developer verison ${DOWN_ARROW} ${NC}\n"
wget -O /tmp/$file_name.tar.bz2 "https://download.mozilla.org/?product=firefox-devedition-latest-ssl&os=linux64&lang=en-US"
echo -e "${BGREEN}Download Complete ${THUMBS_UP} ${NC}\n"

# Remove old version of Firefox from /opt
echo -e "${BRED}Removing old firefox version ${NC}"
rm -rf /opt/firefox
echo -e "${BRED}Old version removed successfully !! ${THUMBS_UP} ${NC}\n"

# Unzip latest version of Firefox Developer Edition
echo -e "${BGREEN}Installing latest firefox developer version${NC}\n"
tar -xvf /tmp/$file_name.tar.bz2 -C /opt
echo -e "${BGREEN}Done ${TICK} ${NC}\n"