From: Robert Klemme <shortcutter@...>
Date: 2009-04-28T18:17:32+09:00
Subject: Re: How Check File Busy?

2009/4/28 Greg Willits <lists@gregwillits.ws>:
> Marc Heiler wrote:
>> Do you require this on a local machine, or only via FTP?
>>
>> I think FTP is extremely limited - not sure if it allows that much.
>
> Sorry, clarification.... all ruby work is local. It just so happens that
> for the file move, the source folder functions as an FTP target, but
> I'll be working with it locally. So, the entire move process is a local
> file system, it's just that the source files may be in the middle of
> being uploaded (they're large, and take several minutes to transfer in).

IMHO it's difficult to detect that. You could use shell utility
"fuser" if available on your platform.  In a shell script you could do

while fuser "$file" >/dev/null; do
  sleep 1
done
cp "$file" "$somewhere_else"

Maybe you can use an FTP server which allows to trigger post
processing after an upload has finished.  I am not sure about FTP
library, but if it contains a server part you might even be able to
cook one yourself.

Kind regards

robert


-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/