[Gllug] Re: [CHINWAG] /proc
John Hearns
john.hearns at cern.ch
Thu May 23 12:01:31 UTC 2002
Tet! Watch that Subject header!
9Grins as he blatantly hijacks Colin's thread)
On Thu, 2002-05-23 at 13:47, tet at accucard.com wrote:
> Because it's really *not* there. /proc is basically just the kernel
> exposing information to userland. It happens to use filesystem
> semantics to do so (rather than, say, a system call), because it's
> a convenient interface for some things.
Good point. Anyone else care to say what "some things" might be?
The kernel effectively has
> a filesystem driver for procfs, so that when you cat a file, instead
> of reading blocks from disk, it reads information from kernel data
> structures instead. Similarly, writing to /proc updates the relevant
> data structures (although not all can be written to).
>
> >If so, are there any fun - or time wasting - things that could be piped to
> >the /proc system?
>
> Yes, plenty! See /sur/src/linux/Documentation/filesystems/proc.txt for
> an incomplete list.
Good stuff.
Whos's next with the talking stick - anyone newbies out there want to
say "Excuse me - I didn't understand a word there".
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