Re: Bug#94286: apt: should ignore .dpkg-new and the like in apt.conf.d

[Matt Zimmerman <mdz@debian.org>]

On Wed, Apr 18, 2001 at 09:41:29PM -0600, Jason Gunthorpe wrote:

> On Wed, 18 Apr 2001, Matt Zimmerman wrote:
> 
> > My comment, which was unrelated to the patch, was that a better approach
> > might be to accept filenames matching a pattern, rather than excluding
> 
> This is what all debian tools that use .d dirs do. I stole the exclude
> list from cron IIRC.

Which cron did you steal it from?  Surely not Debian's cron.  For
/etc/cron.daily, /etc/cron.weekly and /etc/cron.monthly, it uses run-parts.
For /etc/cron.d, it emulates the filename selection of run-parts:

CRON(8):
[...]
       a crontab file to /etc/cron.d. Such files should be  named
       after  the  package that supplies them. Files must conform
       to the same naming convention  as  used  by  run-parts(8):
       they must consist solely of upper- and lower-case letters,
       digits, underscores, and hyphens. Like  /etc/crontab,  the
[...]

RUN-PARTS(8):
       run-parts runs a number of scripts or programs found in  a
       single  directory  directory.   Filenames  should  consist
       entirely of upper and lower case letters,  digits,  under­
       scores,  and  hyphens.   Subdirectories  of  directory and
       files with other names will be silently ignored.

ifupdown and ppp also use run-parts.  xfree86-common emulates its filename
selection:

# run-parts-style sourcing of every file in the session directory;
# source instead of executing so that the variables defined above are
# available to the scripts, and so that they can pass variables to each
# other
for sessionfile in $syssessiondir/*; do
  if [ -f $sessionfile ]; then
    if expr $sessionfile : '.*/[0-9][0-9][[:alnum:]_-]*$' > /dev/null 2>&1; then
      . $sessionfile
    fi
  fi
done

Let's not forget /etc/rc*.d, which predates all of these, and enforces an even
stricter interpretation of filenames.  I would argue that run-parts-style
filenames are the de facto Debian standard.

-- 
 - mdz