winscp scrip for move and replace.

Unfortunately, winscp is very limited in its basic command set.  There's no way to force the "mv" command to overwrite the files.  If you want to completely blow away all the backups each time you do this, you can first delete the files in /outgoing/completed.  Another option would be to create a separate folder for each day that you do this, and put the files there.

Finally, you could use a more robust script, to first check each individual file in the base directory, check the completed directory for existence of a backup (and remove if it exists), and then do the move.  

You can also do this using .NET wrapper, though it's much more complex:
http://winscp.net/eng/docs/library

yes, the .net is more complex, can we add a timestamp on the txt file? and move to completed folder.

thanks

Yes, you could add a timestamp as well, but not with the basic winscp commands.  It'd have to be done outside that process, in the script that calls winscp.

that's two process, can i have one script to do the whole thing? or other program rather than Winscp ?

Do you have direct command line access to the server in question?  If so, what OS is it?

yes, i can create and run cmd file. it's window 2003. thanks

If you can run a cmd file, just do it with something like:

d:
cd outgoing
ren *.txt *.bak
move /y *.bak completed\

the reason we use winscp is for the sftp remote site. those outgoing and completed are in the remote site sftp server.

Right, that's what I meant by "server".  Do you have direct command-line access to the remote server, via ssh for instance?

oh, no, we can not remote access the server.

How many of the "completed" files do you want to keep?  You could always do a simple round-robin mv, deleting the oldest ones, and successively  moving into different directories, like this:

rm /outgoing/completed3/*.bak
mv /outgoing/completed2/*.bak /outgoing/completed3
mv /outgoing/completed1/*.bak /outgoing/completed2
mv /outgoing/completed/*.bak /outgoing/completed1
mv *.txt  /outgoing/completed/*.bak

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well, we would like to keep them in one location. i find the way to solved my issue,  if there is an error on the .bak, i will move the rest of files in .txt to avoid the name issue. thanks


mv *.txt  /outgoing/completed/*.bak
mv *.txt  /outgoing/completed/*.txt