githubs() {
  if [[ z $@ ]]; then
    ln -sf /.ssh/id_rsa /.ssh/github_rsa
    ln -sf /.ssh/id_rsa.pub /.ssh/github_rsa.pub
  else
    ln -sf /.ssh/github/$1 /.ssh/github_rsa
    ln -sf /.ssh/github/$1.pub /.ssh/github_rsa.pub
  fi
  rm -rf /tmp/keyring*/ssh
}