On Thu, 20 Feb 2014 13:38:06 +0100, Helmut Jarausch
<jarausch@igpm.rwth-aachen.de> wrote:
> Hi,
> 
> I have a very simple question. How to emerge (update) all packages  
> which depend on some
> given package P.
> 
> I've tried
> 
> emerge -uv1 `equery -q d P`
> 
> or  emerge -uv1 `qdepends -q -Q P`
> 
> but both commands (equery and qdepends) generate a list with the  
> version attached like
>    app-editors/kile-2.1.3
> which emerge doesn't like (unless there is an '= in front of each
> name)
> 
> Is there an easy way to do so without resorting to shell/python  
> scripting?
> 
> Many thanks for a hint,
> Helmut
> 
> 

How about one of these?
    emerge -1 $(qdepends -N -C -Q P)

    emerge -1 $(qdepends -C -Q P | sed 's/^/=/')

-- 
eroen