[Cialug] Diff that ignores certain things

[David Champion]

diff file1 file2 | grep -v database_host

-dc


On Mon, May 1, 2023 at 1:13 PM Jeffrey Ollie <jeff at ocjtech.us> wrote:

> Dunno if this would work, but difftastic[1] is on my short list of tools to
> check out soon. Otherwise you could replace "dev" with "prod" (for example)
> in one file and diff the result. Or do an end run around the whole thing
> and use templates to generate the config files in the first place. That way
> the only possible differences are the changes inserted by the template.
>
> [1] https://github.com/Wilfred/difftastic
>
> On Mon, May 1, 2023 at 1:04 PM Todd Walton <tdwalton at gmail.com> wrote:
>
> > I often diff two config files that should differ only by one small thing.
> > Like, I might have similar config files for two servers, but one is dev
> and
> > one is prod. So the line for database host, for example, would be:
> >
> >      database_host = "database-dev-1.example.com"
> >
> > In prod, of course, that will be just the same except "dev" will be
> "prod".
> > I'd like to tell diff to consider "dev" and "prod" to be the same, for
> diff
> > purposes. Maybe like this:
> >
> >      diff --consider-identical "/dev/prod/" file1.txt file2.txt
> >
> > Or:
> >
> >      diff --replace "/dev/env/" --replace "/prod/env/" file1.txt
> file2.txt
> >
> > --
> > Todd
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> >
>
>
> --
> Jeff Ollie
> The majestik møøse is one of the mäni interesting furry animals in Sweden.
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