add progress bar?

[伍文慧]

Hi IOTDB group,


Could you please add a progress bar for import and export scripts in the 
iotdb-cli folder? Since import and export large-size file takes long time and 
the user hopes to know the progress. 


Thanks!
Warm regards,
Sunny Wenhui Wu




Hi IOTDB 小组：


请问使用iotdb-cli 下的export和import脚本时可否加一个导入或导出的进度条？ 因为导入或导出大文件时间比较长，用户不知道进度。
谢谢！


伍文慧
清华软院