I just installed CentOS 6.4 and enabled SSH, HTTP and HTTPS on the firewall configuration required for my server application. When I used ssh to connect to another machine, I got this command line error “ssh: command not found”. I got this error because I enabled SSH service as ssh server daemon only, and I don’t have ssh client running.
To install sshd server and client:
yum -y install openssh-server openssh-clients