Bash script to check for new GitHub releases

check_github_release.sh

#!/bin/bash
#
# Check if GitHub repos have new releases, compare to last run and notify through AutoRemote, if change
#
# Requires xidel from http://www.videlibri.de/xidel.html#downloads
# Saves last run to /tmp/latest_reponame.txt files

# Array of tracked GitHub repos
githubrepos=('mholt/caddy')
authkey="NOTMYREALKEY"

updates=""
for i in ${githubrepos[@]}; do
  name=$(echo "${i}" | tr -cd '[a-z]')
  current=$([ -f /tmp/latest_${name}.txt ] && cat /tmp/latest_${name}.txt)
  githublatest=$(xidel https://github.com/${i}/releases.atom -se //entry[1]/title)

  if [[ "$current" != "$githublatest" ]];
  then
    echo "$githublatest" > /tmp/latest_${name}.txt
    updates="${updates}${i} ${githublatest}\n"
  fi
done


# Send notification, if updates found (var not empty)
if [[ -n "$updates" ]];
then
  curl -s "https://autoremotejoaomgcd.appspot.com/sendnotification?key=${authkey}&title=Updates%20available&statusbaricon=action_about_dark" --data-urlencode "text=${updates}" > /dev/null
fi