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Bug#241901: FHS should be more clear [Was: Bug#241901: apt: E: Could not open lock file /var/cache/apt/archives/lock - open (2 No such file or directory)]



Hi!

FHS should make clear whether the dirs under /var/cache can be deleted
or not.

The FHS, section 5.2, says:

   [...]
   /var/cache is intended for cached data [...] The application must be
   able to regenerate or restore the data. Unlike /var/spool, the cached
   files can be deleted without data loss.
   [...]

Now many apps in Debian will choke on *directories* under /var/cache
being removed.  Matt Zimmerman says to this (in the Bug#241901 thread):

> On Sat, Apr 03, 2004 at 11:50:33AM -0800, Matt Zimmerman wrote:
> > If you read the FHS more closely, you see that it only refers to the
> > deletion of _files_ under /var/cache, not directories.

Which is right, but: as directory is a special kind of a file, the
wording there is ambiguous, or misleading, at least (*I* was mislead).

I'd suggest the progs being able to survive the deletion of *anything*
under /var/cache, and FHS being worded more clearly.

Cheers,
Jan.

-- 
``[A]le vubec si to nezaslouzis, takze ti doporucuju abys pokracoval standardni
  ... cestou a nasel si nejblizsi oficialni ap.''
  	-- Lukas Holubicka alias Skrin

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