Sorry for the delay in responding. I'll see if I can gather the HP-UX version info.
The sender claims that they are not prefixing tmp_
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HPUNIX SFTP filename tmp_ prefix
Does anyone know how to stop SFTP on HP UNIX from prefixing the filename with tmp_ while the file is in transit? I do not want this to happen because it is breaking some automation on the receiving SFTP server.
If I look at the folder on the SFTP server as the file is coming in from a HP UNIX using SFTP, the filename has tmp_ on the beginning. Is it possible to prevent this behavior on the HP UNIX side? Maybe by specifying a parameter on the command line, or in a config file or something?
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Answers
OK, HP-UX 11i v1 doesn't include ssh/sftp as part of the standard operating system; HP supply a free add-on package (Secure Shell, based on OpenSSH, which includes sftp), but admins are free to install other software packages which is why I asked for the output of "swlist" (Assuming that it was installed as an HP-UX package! Otherwise the HP-UX admins will have to work harder to figure out where they installed the sftp client software and where they got it from)
Another possibility is that this SFTP implementation uses a configuration file that allows you to specify a temporary prefix (or suffix). Googling "sftp temporary rename" or "sftp tmp_" returns a few results indicating that this sort of thing is desirable in many SFTP implementations, but nothing concrete.
You could ask the HP-UX admins to test it themselves locally - sftp localhost and put a file, and while that's transferring, use another terminal to look in the receiving directory for *filename* and see if it gets a temporary "tmp_" prefix.
Alternatively - Does this happen with transfers from other Unix variants? And how does this break the automation on the receiving server? What OS & SFTP package does your server have? It may be easier for you to handle the issue there than convince a crusty old Unix admin that _he_ has a problem :-)
You may also want to use the "Request Attention" button to ask the Moderators to make this question visible to Experts in more Zones; Maybe Networking and Security?
Excellent response.
I especially like this part..
You could ask the HP-UX admins to test it themselves locally - sftp localhost and put a file, and while that's transferring, use another terminal to look in the receiving directory for *filename* and see if it gets a temporary "tmp_" prefix.
I should have thought of that one myself. I'll see what I can find out.
Sorry that I don't have more details. The HP-UX admins didn't say exactly what they did, but they did say that they did some poking around. Due to the fact that I have to go thru another person to get the details, and the fact that it is a customer I was unable to get more details. It would have been nice if they shared more because it helps us all to understand issues that might come up.
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by: tfewsterPosted on 2009-11-07 at 03:21:37ID: 25765830
I've not seen that behaviour, but it seems very sensible to avoid the problem of the receiving server trying to process a file before it's finished transferring.
What version of HP-UX & sftp are you using? On the HP-UX server;
uname -r
/usr/sbin/swlist -l file|grep sftp # lists product_name.fileset_name filename
/usr/sbin/swlist -l product <product name>
It's also possible that the sending sftp is scripted to do something like
put filename tmp_filename
rename tmp_filename filename