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

[Dan Christensen <jdc@uwo.ca>]

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.

Dan


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