register_ssh.sh

#!/bin/bash
# GitHubの公開鍵をSSH認証用の鍵として登録する子

AUTHORIZED_KEYS_FILE="$HOME/.ssh/authorized_keys"

if [ -z $GITHUB_ACCOUNT ]; then
  GITHUB_ACCOUNT='rutan'
fi

# 認証鍵の登録
ssh_pub_key=`curl https://github.com/"${GITHUB_ACCOUNT}".keys`
if [ ${#ssh_pub_key} -eq 1 ]; then
  echo '鍵 is 見つからない'
  exit 1;
fi

grep_result=`grep "${ssh_pub_key}" "${AUTHORIZED_KEYS_FILE}"`
if [ "$ssh_pub_key" = "$grep_result" ]; then
  echo 'already registered ssh public key'
else
  echo 'register ssh public key'
  echo "${ssh_pub_key}" >> "$AUTHORIZED_KEYS_FILE"
fi