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Date: Thu, 27 Apr 2017 07:56:57 -0700
From: Gary Johnson <garyjohn AT spocom DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: find / without traversing /proc
Message-ID: <20170427145657.GA9395@phoenix>
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On 2017-04-27, bonhard wrote:
> The command "find /" takes forever, if it completes at all, because of the
> need to traverse the induced directory /proc. Is this directory often
> needed by users? Can it be skipped by setting up "export CYGWIN=something",
> or even by default, with the requirement on the user to induce it if needed?
> There seems to be no switch to the command find that would easily allow
> "but not this subdirectory": if there was, I wouldn't be asking. Quite a
> lot of surfing led me to
> $ find / \( -wholename /proc -o -wholename /dev \) -prune -o -print
> which is really heavyweight syntax for a simple requirement. I am pretty
> certain it leads to the behaviour required "do not traverse" though various
> posters seem to think it just leads to "traverse but do not report" saving
> almost nothing.
> Assuming the syntax is correct, I have not been able to incorporate any
> qualifiers such as -type d or -type f or -type l. Any ideas where to slot
> these so that they work?

This isn't exactly what you're looking for because it expands to
give find a list of places to look rather than just excluding some
set of directories from one place to look, but it seems to work
well. You'll need to have the extglob shopt set.

    $ find /!(dev|proc) ...

HTH,
Gary


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