How do I create a patch?

[Jeff Waugh]

On Tue, 2004-09-28 at 13:03 +1200, Jim Cheetham wrote:
> I've found a package with a small problem, that can be fixed with a 
> change to one line in one of the config files ...
> 
> I'd like to create "a patch" to offer back to Ubuntu ... but I don't 
> know how to create one.
> 
> I know it involves using 'diff' :-) and I guess I should be changing the 
> source package, or perhaps both ... I've downloaded them both, and I've 
> made a copy with my change in ... but how do I create the patch correctly?

So if you have the package source directory, and you've copied it to a
new directory, you can do this:

  diff -ur original-dir modified-dir > package.diff

- Jeff

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