RuneScape repo update checker

update

#!/bin/bash

# Note: the following key must be added beforehand to your keyring:
# https://content.runescape.com/downloads/ubuntu/runescape.gpg.key

set -e

# settings - editable
dist=trusty
repo="https://content.runescape.com/downloads/ubuntu/dists/$dist"
pkgs="non-free/binary-amd64/Packages.gz"

echo $'\n\033[1m==> Downloading: Release\033[0m'
wget -O Release "$repo/Release"
wget -O Release.gpg "$repo/Release.gpg"
gpg --verify Release.gpg Release

echo $'\n\033[1m==> Downloading: Packages\033[0m'
wget -O Packages.gz "$repo/non-free/binary-amd64/Packages.gz"
grep $(sha256sum Packages.gz | sed 's/ .*//') Release

rm -f Packages
gunzip Packages.gz
grep $(sha256sum Packages | sed 's/ .*//') Release

echo $'\n\033[1m*** Latest packages ***\033[0m'
grep '^\(Package\|Version\|SHA256\):' Packages

hey! What does set -e do?

set -e stops running the script if it hits an error

How exactly does one add https://content.runescape.com/downloads/ubuntu/runescape.gpg.key to ones "keyring"?

download and run gpg --import runescape.gpg.key