When messing with SSHAUTH_SOCK in bashrc S2 might stop working
#unset SSH_CLIENT #unset SSH_AUTH_SOCK #unset SSH_CONNECTION #eval $(ssh-agent) > /dev/null #ssh-add ~/.ssh/hari
#unset SSH_CLIENT #unset SSH_AUTH_SOCK #unset SSH_CONNECTION #eval $(ssh-agent) > /dev/null #ssh-add ~/.ssh/hari