/bin/ls sorting bug?
olli at lurza.secnetix.de
Tue Jun 22 08:19:10 GMT 2004
Greg Black <gjb at gbch.net> wrote:
> On 2004-06-21, Leo Bicknell wrote:
> > While I think the particular sort order (current behavior vrs non
> > nano patch vrs nano patch) is largely unimportant, I think consistency
> > is very important. It's quite common to do things like using diff
> > on the output of commands like ls (indeed, I think several of the
> > built in periodic scripts to this), and for that having a _reproduceable_
> > order is important.
> The output of ls has never been good for reproduceable output
> for identical data. It frequently leads to gigantic "diffs" in
> periodic reports which makes them useless, as far as I can
> tell. Take the following case:
> What we need is a canonical output form for this kind of use
> that can be fed to a custom diff that can operate on individual
I always use "diff -Bb" for things like that, i.e. to
ignore any changes in whitespace. Works perfectly fine.
Maybe someone should just add "-b" to the diff command
in those periodic scripts?
Oliver Fromme, secnetix GmbH & Co KG, Oettingenstr. 2, 80538 München
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