I am creating public and private key for sftp in ksh.

then copy the name1.pub file into /.ssh/authorized_keys directory in remote server.

Now my question is how to write that script which do not ask me for the password from prompt.

please help.

thanks in advance.

I'm not exactly sure of the question. The whole point of using keys with ssh is so that you do not have to provide a password. If this is not setup correctly then you will be prompted for a password.

If you try "ssh <remote-host> hostname" are you prompted for a password? If so doublecheck that you have your keys installed correctly. Also check your permissions. The keys will not work if your directory tree is world readable.

If the ssh command works with no password then you are setup correctly. Next, to run in a script try the scp command to move files back and forth. (man scp)