Eric at on 25 Mar 2014 11:33:55 -0700

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Re: [PLUG] check for a file being transmitted via ftp

A trigger "im-done" file is also good!

I'm going to try lsof first as it is, as you describe, clean.


On 03/25/2014 02:13 PM, Ed Roper wrote:
> The clean way : lsof The dirty way : Have a 'trigger file' posted after uploading is complete. You don't move on the file you're watching until the trigger file shows up. I've seen this done in plenty of production environments, while it's totally a hack, it still works.
> -----Original Message----- From: plug [] On Behalf Of Eric at Sent: Tuesday, March 25, 2014 2:05 PM To: Philadelphia Linux User's Group Discussion List Subject: [PLUG] check for a file being transmitted via ftp
> I expect a file to be routinely transmitted to me via ftp.  A bash script, invoked as a cron job, will process and then archive that ftp file.
> All of that is easy/routine.
> My question is: how do I know that the file is complete?  I don't want to start processing the file without being sure that the ftp process is done.
> I thought about checking the size of the file in bytes and then comparing that to it's size 1 minute earlier... if it's not growing then it's probably done. But, that's just *probably* as ftp could be stalled temporarily or worse.
> I have also considered about using inotify cron (incron) but I expect that it would be triggered at the file's creation - not when it's time for me to process it.
> Thanks Eric

#  Eric Lucas
#                "Oh, I have slipped the surly bond of earth
#                 And danced the skies on laughter-silvered wings...
#                                        -- John Gillespie Magee Jr
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