Use github to get ssh authorized keys

github-keys.sh

#!/bin/sh
#
# Fetches SSH keys from a github user
# Big kudos to @zimbatm for inspiration: https://gist.github.com/zimbatm/3166cc0bbb46551fe67e
# 
# Usage:
#   curl -L https://goo.gl/Jj330b | user=<github username> sh
#

if [ -z "$user" ]; then
  user=nmattia
fi

mkdir -m 0700 -p "$HOME/.ssh"
curl "https://api.github.com/users/$user/keys" | grep 'key":'| sed -e 's/.*"\(ssh-.*\)".*/\1/' > "$HOME/.ssh/authorized_keys"