Thank for your reply brother

I know that simple scp can do the trick also. But my requirement is to do through sftp.

Problem is not as simple as you think. Actually I have to make a script in which I have to transfer 24 files of approximately 4 to 5 mb each (text based). My shell script should check the number of bytes of each files at server one then after transfer of all these files to server two it should check that all files have been transfer and also have the same number of bytes as in server one.

kind regards