Re: [gentoo-user] In need of script/command that will parse out all the packages from "emerge -avu world"

[Bo Ørsted Andresen]

On Monday 20 November 2006 07:37, Daevid Vincent wrote:
> Wondering if someone has a script or shell 'one liner' that can take the
> output of "emerge -avu world" and make a list of the packages (I assume all
> on one line). Then I could pump that back into "emerge -av" again (I don't
> mind if it's a simple manual highlight and copy/append).

You need to replace --ask with --pretend when you send the output into a pipe. 
Otherwise it will wait for input. Also when you send it back to `emerge -av` 
you should add --oneshot in order to avoid that every package on the list 
gets added to the world file.

[SNIP]
> For example:
>
> daevid ~ # emerge -avu world | grep x11-
> [ebuild     U ] x11-misc/util-macros-1.1.2 [1.1.0] USE="-debug" 45 kB
> [ebuild     U ] x11-proto/inputproto-1.4 [1.3.2] USE="-debug" 47 kB
> [ebuild     U ] x11-proto/xproto-7.0.9 [7.0.7] USE="-debug" 138 kB
> [ebuild     U ] x11-libs/xtrans-1.0.2 [1.0.1] USE="-debug" 97 kB
> [ebuild     U ] x11-libs/libX11-1.0.3-r1 [1.0.3] USE="ipv6 -debug" 1,415 kB
> ...
>
> I want to run some command that will give me a list like:
>
> x11-misc/util-macros x11-proto/inputproto x11-proto/xproto ...
>
> Then I could just select and copy that "string" and append it to "emerge
> -av "

I believe [1] should help you understand how this works...:

# emerge -va1 $(emerge -pvu world | 
    sed -n -r 's,^\[ebuild[^]]*\]\ (x11-[^\ ]*).*$,\1,p' |
    sed -r 's/-[^-]+(-r[0-9]+)*$//')

[1] http://www.grymoire.com/Unix/Sed.html

-- 
Bo Andresen