使用rsync时出现这个错误：
$ rsync -av server:file . Unable to negotiate with 10.1.1.50 port 22: no matching host key type found. Their offer: ssh-dss rsync: connection unexpectedly closed (0 bytes received so far) [Receiver] rsync error: error in rsync protocol data stream (code 12) at io.c(226) [Receiver=3.1.1] 如何解决它？
这是解决scheme
$ rsync -av -e 'ssh -oHostKeyAlgorithms=+ssh-dss' server:file .