Le 02/02/2016 04:39, Simon Wise a écrit :
> so looking at apt.conf I see as the very first text 'DESCRIPTION'
>
> /etc/apt/apt.conf is the main configuration file shared by all
> the tools in the APT suite of tools, though it is by no means
> the only place options can be set. The suite also shares a
> common command line parser to provide a uniform environment.
>
> When an APT tool starts up it will read the configuration
> files in the following order:
>
> 1. the file specified by the APT_CONFIG environment variable
> (if any)
>
> 2. all files in Dir::Etc::Parts in alphanumeric ascending
> order which have either no or "conf" as filename extension
> and which only contain alphanumeric, hyphen (-),
> underscore (_) and period (.) characters. Otherwise APT
> will print a notice that it has ignored a file, unless
> that file matches a pattern in the
> Dir::Ignore-Files-Silently configuration list - in which
> case it will be silently ignored.
>
> 3. the main configuration file specified by Dir::Etc::main
>
> 4. the command line options are applied to override the
> configuration directives or to load even more
> configuration files.
>
>
> Dir::Etc::Parts is in fact apt.conf.d/
>
> as seen by going to the FILES section at the end of the manpage,
> either with a search for Dir::Etc::Parts or because you know a FILES
> section usually exists:
>
> FILES
> /etc/apt/apt.conf
> APT configuration file. Configuration Item:
> Dir::Etc::Main.
>
> /etc/apt/apt.conf.d/
> APT configuration file fragments. Configuration Item:
> Dir::Etc::Parts.
This is also in man apt.conf, but - call me an idiot - I still
can't make sense of it. What the hell is the meaning of the words 'Dir',
'Etc', 'Main' and 'Parts'? Why the hell do '::' translate to '/' ? What
document did you learn that "language" from?
Another point: I'd expect the configuration tool to provide a way
to specify a scope for any parameter setting, something which could, for
example, restrict the scope of the line 'APT::Install-Recommends
"false";' to synaptic, eg simply 'SYNAPTIC::Install-Recommends "false";'
Maybe, since Synaptic is a front-end to apt, the rationale is it is
also intended to tune apt proper. I admit it makes sense. It's imperfect
because the setting is lost if you purge synaptic but nothing can be
perfect.
Didier
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