cat .ssh/id_rsa.pub | ssh latprog@192.168.1.2 'cat >> .ssh/authorized_keys'
cat .ssh/id_rsa.pub | ssh latprog@192.168.1.3 'cat >> .ssh/authorized_keys'
cat .ssh/id_rsa.pub | ssh latprog@192.168.1.4 'cat >> .ssh/authorized_keys'