Bug#145549: apt: command to upgrade already installed packages

[Dan Christensen <jdc@uwo.ca>]

Admar Schoonen <a.m.j.m.schoonen@student.tue.nl> writes:

> On Thu, May 02, 2002 at 11:59:46AM -0400, Dan Christensen wrote:
>> Wichert Akkerman <wichert@wiggy.net> writes:
>> 
>> > Previously Dan Christensen wrote:
>> >> I would find it quite useful to have a command (foo, say) so that
>> >> if I have package1 and package3 installed, and I do:
>> >> 
>> >>   apt-get foo package1 package2 package3
>> >> 
>> >> then only package1 and package3 get installed [plus any new dependencies],
>> >> but nothing happens to package2.
>> >
>> > Sounds like:
>> >
>> > 	apt-get install package1 package3
>> >
>> > which does exactly what you describe.
>> 
>> I want to use the same command line on several machines which have
>> different packages installed, and only cause already-installed
>> packages to be affected.  I don't want to manually change the
>> command line, since I cut and paste it.
>
> seems like 
>   apt-get install $(dpkg --get-selections|egrep "$(echo -e '\t')install"|awk '{print $1}'|tr '\n' ' ')
> will do.

Hmm, that doesn't look quite right.  That looks like it will do
something similar to "apt-get upgrade".  I only want to upgrade
certain packages.

Of course, something like what you wrote could be made to work.  But
it seems like this feature would naturally fit into apt-get, and would
be pretty easy to implement in that context (for someone who knows the
apt-get code :-).

Best,

Dan


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