Find ssh-agent and do ssh-add if needed

.zshrc

sshAgentFind() {
  # Ref https://github.com/wwalker/ssh-find-agent
  local -a sockets
  if [[ -z "$SSH_AUTH_SOCK" ]] ; then
    sockets=("${(@f)$(find /tmp/ -type s -path '/tmp/ssh-*/agent.*' -user $USER)}")

    for socket in $sockets; do
      SSH_AUTH_SOCK=$socket ssh-add -l 2> /dev/null > /dev/null
      if [[ $? -eq 0 ]]; then
        export SSH_AUTH_SOCK=$socket
        echo 'ssh agent ready'
        return 0
      fi
    done

    if [[ -n $sockets ]]; then
      export SSH_AUTH_SOCK=$sockets[1]
      echo 'ssh agent has no key, try `ssh-add` now:'"\n"
      ssh-add
    else
      eval $(ssh-agent -s) > /dev/null
      echo "New ssh-agent set"
    fi
  else
    echo "No-op, socket already set.\n"'You might want `ssh-add`'
  fi
}



[[ -z "$SSH_AUTH_SOCK" ]] && sshAgentFind