Its nice to be able to follow back your followers on GitHub. This script reports:

• Followers you're not following back.
• Accounts being followed, not following you back.

curl -SSL https://raw.githubusercontent.com/jasperblues/GitHubFollowMeBack/master/GitHubFollowMeBack.swift > GitHubFollowMeBack && chmod +x ./GitHubFollowMeBack

./GitHubFollowMeBack <userName>

NB: GitHub rate limits unauthenticated users (eg this script) to x requests per hour.