Because of the job needs, because to determine whether rsync is successful, at first I was to judge the local file there is no to that do quiteSafety, now to push the data past, I can not judge, only with the rsyncreturnIn the first place, the ' rsync ... ' was assigned a value, not in the shell. View text print rsync xxx yyy ret=$? if [ $ret -ne 0 ]; then echo "failure, error code: $ret " fi Pay on rsync common error codes: 0 Success 1 Syntax or usage error 2 Protocol incompatibility 3 Errors selecting input/output files, dirs 4 requested action not suppOrted: an attempt was made to manipulate 64-bit files on a platform that cannot support them; or an option was specified that is supported by the client and not by the server. 5 Error starting client-server protocol 6 Daemon unable to append to log-file 10 Error in socket i/o 11 error in file i/o 12 Error in rsync protocol data stream 13 Errors with program diagnostics 14 Error in IPC code 20 Received SIGUSR1 or SIGINT 21 some error returned by waitpid () 22 Error allocating core memory buffers 23 Partial transfer due to error 24 partial transfer due to vanished source files 25 the --max-delete limit stopped deletions 30 Timeout in data send/receive