setup-github-keys.sh

set -o errexit
set -o nounset

# This is a convenience script to set up your user on a host with your public
# SSH keys obtained from github.  No warranty.  Use at your own risk.
GITHUB_USER=${GITHUB_USER:=$USER}
echo Setting up ${USER} with for ssh auth using keys of ${GITHUB_USER} in github...
echo
echo "Setting up ~/.ssh directory..."y

if [ -d ~/.ssh ]; then
  echo "~/.ssh directory exists; What were you thinking?!"
  exit -1
else
  mkdir ~/.ssh
  chmod 700 ~/.ssh
fi
echo Done.

echo "Setting up authorized_keys file..."
if [ -f ~/.ssh ]; then
  echo "~/.ssh/authorized_keys file exists; What were you thinking?!"
  exit -1
else
  curl --silent https://api.github.com/users/${USER}/keys \
    | grep key \
    | cut -c 13-736 \
    > ~/.ssh/authorized_keys
  chmod 600 ~/.ssh/authorized_keys
fi
echo Done.

echo Finished setting up host.