Thanks!
Gustavo Seabra
> Em 19 de nov de 2015, à(s) 17:22, Eric A. Borisch <ebori...@macports.org>
> escreveu:
>
> On Thu, Nov 19, 2015 at 11:07 AM, Gustavo Seabra <gustavo.sea...@gmail.com>
> wrote:
> > I apologize for my ignorance… What rest was just for fun? Will the command
> > work even in the presence of the ports that don’t have a +quartz? and, in
> > this case, what would happen to those?
> >
> > The complex command Eric presented earlier is very useful to me as well. I
> > won’t memorize it either, but I bookmarked the message.
> >
> > All the best,
> > Gustavo Seabra
>
> The sed / xargs part was "for fun." Because regexes are fun, right?
>
> To answer your other question, yes; the port echo line will only show
> installed ports that have (but may or may not be selected) both a quartz and
> an x11 variant.
>
> For reference, here is the command again;
> port echo active and variant:quartz and variant:x11 \
> | sed -n -e '/\+quartz/d;s/@[^+-]*//;s/\+x11/-x11+quartz/p' \
> | sudo xargs -n 2 port install
>
> Breaking down the sed/xargs portion, it:
>
> 1) Checks for +quartz to be present (and thus currently active) and ignores
> ('/d' for delete and continue) those lines. I do this because some ports
> (notably cairo) can be both +x11 and +quartz.
>
> 2) Removes the version information (between the @ and the first + or -; will
> fail as noted if the version string has a + or -)
>
> 3) Searches for lines with +x11, and replaces that with -x11+quartz (the
> desired action originally requested) and then (/p) prints only those (-n
> argument) lines.
>
> xargs -n 2 then takes each set of two arguments (<port> <new variants>) and
> calls "port install" with those arguments.
>
> Glad you found it useful; perhaps you'll find it fun. ;)
>
> - Eric
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