Prints all GitHub organization users SSH keys. Can be used in automation to add github users to ~/.ssh/authorized_keys

fetch-github-organization-members-ssh-keys.sh

#!/bin/bash
#
# Fetches all GitHub organization users SSH keys and print out
# Can be used to update ~/.ssh/authorized_keys file
#
# Eg.
# fetch-github-organization-members-ssh-keys.sh -o my-org -t TOKEN > ~/.ssh/authorized_keys
#

function parse_arguments() {

  while [[ $# > 1 ]]; do
    key="$1"

    case $key in
        -o|--organization)
        ORGANIZATION="$2"
        shift
        ;;
        -t|--token)
        GITHUB_TOKEN="$2"
        shift
        ;;
        *)
        echo "Unknown argument: $key";
        exit 2;
        ;;
    esac
    shift
  done

  if [ "${ORGANIZATION}" == "" ]; then
    echo "--organization is required parameter"
    exit 1
  fi

  if [ "${GITHUB_TOKEN}" == "" ]; then
    echo "--token is required parameter"
    exit 1
  fi
}

function main() {
  members=`get_organization_members ${ORGANIZATION} ${GITHUB_TOKEN}`

  for member in ${members}; do
    member_ssh_keys=`curl -s https://github.com/${member}.keys`

    if [ "${member_ssh_keys}" != "" ]; then
      # Append user name at the end of key
      # Note: GitHub strip off the username@computername from the key
      echo "${member_ssh_keys} ${member}@GitHub"
    fi
  done
}

function get_organization_members() {
  organization=$1
  token=$2
  # Fetch users and parse username from the response
  curl -s -H "Authorization: token ${token}" https://api.github.com/orgs/${organization}/members | sed -En 's/(.*login\": \"(.*)\".*)/\2/p'
}

parse_arguments $@
main