The version of OpenSSH included in 16.04 disables ssh-dss. There's a neat page with legacy information that includes this issue: http://www.openssh.com/legacy.html In a nutshell, you should add the option -oHostKeyAlgorithms=+ssh-dss to the SSH command: ssh -oHostKeyAlgorithms=+ssh-dss root@192.168.8.109

However, if the test file is in fact 0 bytes, then your shell is behaving, but it is possible that you just have a very old version of rsync. You can tell the client end (assuming it is the newer end) to not advertise such a high version that the old rysnc server version doesn't recognize it. You can do this using the --protocol= option. In my case, using --protocol=30 did the trick. If you are still having trouble, try ssh in as the user rsysnc is connecting with and try running rsync --version to see if the shell can find rsync. If you get something that says command not found, then rsync might not be installed on the machine you are connecting to or it might not be in the path. Rsync does have options for specifying the path of the remote end, read the man page(s). ShareShare a link to this answer Copy linkCC BY-SA 3.0 Improve this answer Follow Follow this answer to receive notifications answered Jul 16, 2014 at 20:28 AzendaleAzendale 1,50522 gold badges1111 silver badges1414 bronze badges 2 +1 for the hint about --protocol which solved my problem with a 2.5.6 server (protocol version 26) and a 3.1.0 client (protocol version 31) – MattBianco

If testfile is NOT 0 bytes, then the trouble is that your shell is outputting something. Check /etc/profile, .profile, .bashrc, .cshrc, etc. If it is, you can change it to check if your terminal is interactive and only output text by using the following code in a bashrc. Something equivalent exists for other shells as well: if shopt -q login_shell; then [any code that outputs text here] fi or alternatively, like this, since the special parameter - contains i when the shell is interactive: if echo "$-" | grep i > /dev/null; then [any code that outputs text here] fi

rsync -azvvP /home/path/folder1/ /home/path/folder2