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From Diane Holt <>
Subject Re: Checking for file/directory existence
Date Sun, 12 Nov 2000 03:15:02 GMT
--- Artem Portnoy <> wrote:
> Is it possible in Ant to execute a task depending on the file or
> directory existence?

There's the <available> task:
but I don't think you can specify a directory instead of a file.

But note: You can only do execution-determination with the if/unless at
the target level, not at the task level.

> For example, I would like to copy a certain file if it exists or skip
> the copy operation if it doesn't.  How do I do that?

Well, copy will tell you the file doesn't exist (post 1.2), but it won't
cause the build to fail just because of that. So it shouldn't actually
hurt anything if the <copy> executes even if the file doesn't exist.



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