//start the program: ssh-agent
eval "$(ssh-agent -s)"
cd .ssh
ssh-add your_key_you_want_to_add





//check the active keys by passing the -l option to ssh-add:
ssh-add -l 



//Lists public key parameters of all identities currently repre‐sented by the agent.
ssh-add -L      






//removing a key from ssh-agent
cd .ssh
ssh-add -d your_key_you_want_to_delete






# remove ssh key password
ssh-keygen -p -f id_ed25519