rsync错误捕获 shell捕获返回码

通过返回值判断：rsync返回值为$?,0表示成功

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rsync xxx yyy ret=$? if [ $ret -ne 0 ]; then     echo "失败, 错误码: $ret" fi    rsync常用的错误代码： 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