hostA# sftp -v user1@hostB
....
....
debug1: Sending subsystem: sftp
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
debug1: client_input_channel_req: channel 0 rtype eow@openssh.com reply 0
debug1: channel 0: free: client-session, nchannels 1
debug1: fd 0 clearing O_NONBLOCK
Transferred: sent 3120, received 2720 bytes, in 0.3 seconds
Bytes per second: sent 10837.6, received 9448.1
debug1: Exit status 0
Connection closed