Simple (Auto) update Script for Atom on Debian Based Systems

atom-update.sh

#!/bin/bash

if [ $UID -ne 0 ]; then
    echo "Root Permissons required!"
    sudo $0
    exit $?
fi
TMP_DIR="/home/bt/tmp"
CURRENT_VERSION="$(atom --version | awk '/Atom/ { printf "%s", $3 }')"
wget -q https://github.com/atom/atom/releases/latest -O /tmp/latest
DL=$(awk -F '[<>]' '/href=".*atom-amd64.deb/ {match($0,"href=\"(.*.deb)\"",a); print "https://github.com" a[1]} ' /tmp/latest)
NEW_VERSION=$(echo $DL | awk 'match($0, "[0-9].[0-9]{1,2}.[0-9]{1,3}", a) {print a[0]}')


if [ $CURRENT_VERSION != $NEW_VERSION ]; then
    echo "Update required..."
    echo "v$CURRENT_VERSION --> v$NEW_VERSION"
    wget -q --show-progress $DL  -O "$TMP_DIR/atom_${NEW_VERSION}_amd64.deb"
    if [ $? -eq 0 ]; then
        echo "Setup..."
        dpkg -i "$TMP_DIR/atom_${NEW_VERSION}_amd64.deb"
        if [ $? -eq 0 ]; then
            echo done
            exit 0
        fi
    fi
    echo
    echo "Update has been faild! :-("
    exit 1
else
    echo "Your current Atom Installation is up to date! (v$CURRENT_VERSION)"
    exit 0
fi