Script to download latest GitHub release

github_download_latest_release.sh

#!/bin/bash

# tested for downloading golang binaries

set -euo pipefail

GH_USER='superstes'
GH_REPO='geoip-lookup-service'
FILTER=''
FILTER_EXCLUDE='$%&'

CPU_ARCH="$(uname -i)"
if [[ "$CPU_ARCH" == "x86_64" ]]
then
  CPU_ARCH="amd64"
fi
TARGET_SYSTEM="linux-${CPU_ARCH}"

url="$(curl -s "https://api.github.com/repos/${GH_USER}/${GH_REPO}/releases/latest" | grep 'download_url' | grep "$TARGET_SYSTEM" | grep "$FILTER" | grep -Ev "$FILTER_EXCLUDE" | head -n 1 | cut -d '"' -f 4)"

if [[ -z "$url" ]]
then
  echo "ERROR: No matching asset found!"
  exit 1
fi

echo "DOWNLOADING ${url}"
cd '/tmp'
wget "$url"