Ssh-agent usage, sshagent

Ssh-agent usage, sshagent
Ssh-agent

I have never known what an ssh-agent is. I read several articles tonight and finally learned about it.

Generally, after Step 2 is completed, the password will not be logged in. What is the use of ssh-agent and ssh-add?

In fact, when using ssh-keygen, you can either enter a password or do not enter a password. That is just the case where you did not enter the password. If you lose the password, during ssh Login, you will still be prompted to enter the password of the private key (you do not need to enter the server password ). The ssh-agent can avoid such troubles when repeatedly inputting the private key.
Easy to use

There is also a key chain Access on the mac, which is a password management software and ssh-add for ssh password-free login.