generate ssh key pair using bash as default shell

[test@localhost ~]$ echo 'eval $(ssh-agent)' >> ~/.bash_profile
[test@localhost ~]$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/home/test/.ssh/id_rsa):
Created directory '/home/test/.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/test/.ssh/id_rsa.
Your public key has been saved in /home/test/.ssh/id_rsa.pub. 
The key fingerprint is:
SHA256:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX test@localhost
The key's randomart image is:
+---[RSA 2048]----+
| . E .          |
|. + o.           |
|.* = .          |
|+ X B  . .       |
|o* .   S        |
|==o . .         |
|** o o          |
|*+= .           |
|X+..            |
+----[SHA256]-----+
[test@localhost ~]$ ssh remote-ssh-host 'cat >> /home/test/.ssh/id_rsa.pub'

# Now close your X session and come back

[test@localhost ~]$ ssh-add
Enter passphrase for /home/test/.ssh/id_rsa:
[test@localhost ~]$ ssh remote-ssh-host 
[test@remote-ssh-host ~]$