Re: What should I put inside the file called wlan0?

From	<tomas@tuxteam.de>
Newsgroups	linux.debian.user
Subject	Re: What should I put inside the file called wlan0?
Date	2022-03-03 21:00 +0100
Message-ID	<DWZMd-5Exr-3@gated-at.bofh.it> (permalink)
References	(3 earlier) <DWdxT-5aOL-1@gated-at.bofh.it> <DWsdz-5k5B-7@gated-at.bofh.it> <DWBqx-5pjh-1@gated-at.bofh.it> <DWW1Y-5CdK-3@gated-at.bofh.it> <DWYGt-5DUE-11@gated-at.bofh.it>
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On Thu, Mar 03, 2022 at 07:44:35PM +0100, Stella Ashburne wrote:
> Mon cheri
> 
> > Sent: Thursday, March 03, 2022 at 11:50 PM
> > From: "David Wright" <deblis@lionunicorn.co.uk>

[...]

> > In addition, when using "source-directory"¹, you can leave all the
> > configuration files in place, and deactivate them by, say, adding
> > a disallowed character to their filenames, rather than having to
> > remove them.
> > 
> Can you give me an example of (sic) adding a disallowed character to their filenames? Does Linux permit the use of forbidden characters in filenames?

I think David meant "disallowed wrt the 'source-directory' statement
in the interfaces file. The man page (man 5 interfaces) has this to
say:

  "Similarly,  "source-directory"  keyword is used to source
  multiple files at once, without specifying them individually
  or using shell globs. Additionally, when "source-directory"
  is used, names of the files are checked to match the following
  regular expression: ^[a-zA-Z0-9_-]+$. In other words, the
  names must consist entirely of ASCII upper- and lower-case
  letters, ASCII digits,  ASCII  underscores, and ASCII minus-
  hyphens."

I.e. all other characters would be "disallowed" in this context.
E.g. renaming "my-cool-interface" to "#my-cool-interface" would
exclude it from being included by a "source-directory" statement.

As to your other question, that would depend on the file system,
but as far as Linux is concerned, only the slash "/" and the
NULL character are taboo for file names.

Cheers
-- 
t

Thread

What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-02-28 19:50 +0100
  Re: What should I put inside the file called wlan0? <tomas@tuxteam.de> - 2022-02-28 20:20 +0100
    Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-02-28 21:00 +0100
      Re: What should I put inside the file called wlan0? tomas@tuxteam.de - 2022-02-28 21:30 +0100
        Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-02-28 22:50 +0100
      Re: What should I put inside the file called wlan0? <tomas@tuxteam.de> - 2022-02-28 21:30 +0100
        Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-02-28 22:50 +0100
          Re: What should I put inside the file called wlan0? tomas@tuxteam.de - 2022-03-01 07:40 +0100
            Re: What should I put inside the file called wlan0? Brian <ad44@cityscape.co.uk> - 2022-03-01 13:20 +0100
              Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-03-01 15:30 +0100
                Re: What should I put inside the file called wlan0? Brian <ad44@cityscape.co.uk> - 2022-03-01 16:00 +0100
            Re: What should I put inside the file called wlan0? Stefan Monnier <monnier@iro.umontreal.ca> - 2022-03-01 15:20 +0100
              Re: What should I put inside the file called wlan0? <tomas@tuxteam.de> - 2022-03-01 15:50 +0100
      Re: What should I put inside the file called wlan0? Tim Woodall <debianuser@woodall.me.uk> - 2022-03-01 13:20 +0100
        Re: What should I put inside the file called wlan0? <tomas@tuxteam.de> - 2022-03-01 13:30 +0100
          Re: What should I put inside the file called wlan0? David Wright <deblis@lionunicorn.co.uk> - 2022-03-01 15:40 +0100
            Re: What should I put inside the file called wlan0? <tomas@tuxteam.de> - 2022-03-01 15:50 +0100
        Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-03-01 15:40 +0100
          Re: What should I put inside the file called wlan0? Tim Woodall <debianuser@woodall.me.uk> - 2022-03-01 15:50 +0100
            Re: What should I put inside the file called wlan0? Greg Wooledge <greg@wooledge.org> - 2022-03-01 16:00 +0100
              Re: What should I put inside the file called wlan0? Tim Woodall <debianuser@woodall.me.uk> - 2022-03-01 16:40 +0100
                wikis: moin-moin : plain text (was: Re: What should I put inside the file called wlan0?) rhkramer@gmail.com - 2022-03-03 14:50 +0100
                Re: wikis: moin-moin : plain text (was: Re: What should I put inside  the file called wlan0?) Greg Wooledge <greg@wooledge.org> - 2022-03-03 15:00 +0100
                Re: wikis: moin-moin : plain text (was: Re: What should I put inside  the file called wlan0?) Tim Woodall <debianuser@woodall.me.uk> - 2022-03-03 15:50 +0100
      Re: What should I put inside the file called wlan0? David Wright <deblis@lionunicorn.co.uk> - 2022-03-01 17:30 +0100
        Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-03-02 09:10 +0100
          Re: What should I put inside the file called wlan0? Brian <ad44@cityscape.co.uk> - 2022-03-02 19:00 +0100
            Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-03-03 09:00 +0100
              Re: What should I put inside the file called wlan0? Tim Woodall <debianuser@woodall.me.uk> - 2022-03-03 12:30 +0100
                Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-03-03 19:30 +0100
                Re: What should I put inside the file called wlan0? Brian <ad44@cityscape.co.uk> - 2022-03-03 19:50 +0100
                Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-03-03 20:00 +0100
            Re: What should I put inside the file called wlan0? David Wright <deblis@lionunicorn.co.uk> - 2022-03-03 17:00 +0100
              Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-03-03 19:50 +0100
                Re: What should I put inside the file called wlan0? <tomas@tuxteam.de> - 2022-03-03 21:00 +0100
                Re: What should I put inside the file called wlan0? David Wright <deblis@lionunicorn.co.uk> - 2022-03-08 16:20 +0100
            Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-03-03 19:40 +0100
              Re: What should I put inside the file called wlan0? Brian <ad44@cityscape.co.uk> - 2022-03-03 19:50 +0100
                Re: What should I put inside the file called wlan0? Brian <ad44@cityscape.co.uk> - 2022-03-03 20:00 +0100
                Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-03-03 20:00 +0100
          Re: What should I put inside the file called wlan0? David Wright <deblis@lionunicorn.co.uk> - 2022-03-08 16:20 +0100
  Re: What should I put inside the file called wlan0? Brian <ad44@cityscape.co.uk> - 2022-02-28 21:10 +0100
    Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-02-28 21:20 +0100
      Re: What should I put inside the file called wlan0? Brian <ad44@cityscape.co.uk> - 2022-03-01 00:20 +0100
        Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-03-01 06:10 +0100
          Re: What should I put inside the file called wlan0? Markus Schönhaber <debian-user@list-post.mks-mail.de> - 2022-03-01 09:00 +0100
            Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-03-01 12:10 +0100
        Re: What should I put inside the file called wlan0? <tomas@tuxteam.de> - 2022-03-01 07:50 +0100
  Re: What should I put inside the file called wlan0? Nicolas George <george@nsup.org> - 2022-02-28 22:20 +0100
    Re: What should I put inside the file called wlan0? Ash Joubert <ash@transient.nz> - 2022-02-28 23:50 +0100
      Re: What should I put inside the file called wlan0? Brian <ad44@cityscape.co.uk> - 2022-03-01 00:50 +0100
        Re: What should I put inside the file called wlan0? Curt <curty@free.fr> - 2022-03-01 10:30 +0100
        Re: What should I put inside the file called wlan0? Ash Joubert <ash@transient.nz> - 2022-03-01 22:20 +0100
      Re: What should I put inside the file called wlan0? Stella Ashburne <rewefie@gmx.com> - 2022-03-01 06:10 +0100
    Re: What should I put inside the file called wlan0? Brian <ad44@cityscape.co.uk> - 2022-03-01 00:50 +0100
      Re: What should I put inside the file called wlan0? Nicolas George <george@nsup.org> - 2022-03-01 10:50 +0100

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