tar: Child returned status 1
tar: Error is not recoverable: exiting now
异常1：
> tar -zxvf
gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now解决：
删除z，即：tar -xvf
异常2：
> tar -jxvf
stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now解决：
删除j，即：tar -xvf
