On Saturday 04 Feb 2017 10:24:12 Neil Bothwick wrote:
> On Sat, 04 Feb 2017 10:41:14 +0100, Helmut Jarausch wrote:
> > > emerge -n is the correct solution, although emerge -u may also work
> > > for
> > > you.
> >
> > Many thanks, Neil.
> >
> > Still, I don't see how this can help me in my situation.
> >
> > I'm trying to re-emerge packages which are already installed and where
> > there isn't a new version in the tree (in most cases).
> > So neither -u nor -n will do the job.
>
> I see, you do want to rebuild everything, but only once. I have a script
> that I use to rebuild everything only once, you could modify it to use
> your list of files.
>
> #!/bin/bash
>
> EMERGE_ARGS="--oneshot --keep-going"
>
> usage() {
> echo -e "\nUsage: $(basename $0) [-f file] [-r category/package[-
version]
> [-h]" echo " -f re-emerge all packages older than this file"
> echo " -r re-emerge all packages older than this package"
> echo " -h Show this text"
> echo -e "\n All other options are passed to the emerge command"
> echo -e "$*"
> exit
> }
>
> while getopts f:r:pvh ARG; do
> case "${ARG}" in
> f) REFFILE=${OPTARG} ;;
> r) REFFILE=$(ls -1 /var/db/pkg/${OPTARG}*/environment.bz2 |
> head -
n 1)
> ;; p) EMERGE_ARGS="${EMERGE_ARGS} --pretend" ;;
> v) EMERGE_ARGS="${EMERGE_ARGS} --verbose" ;;
> h) usage ;;
> esac
> done
> shift $(expr ${OPTIND} - 1)
>
> [[ "${REFFILE}" ]] || usage "\nYou must specify a reference with -f or
> -r\n" [[ -f ${REFFILE} ]] || usage "\n${REFFILE} not found\n"
>
> PKGLIST=$(mktemp -t mergeolderthan.XXXXXXXX)
>
>
> find /var/db/pkg -name environment.bz2 ! -newer ${REFFILE} | sed -e
> 's:/var/db/pkg/:=:' -e 's:/environment.bz2::' >|$PKGLIST
>
> cat ${PKGLIST} | xargs --no-run-if-empty emerge ${EMERGE_ARGS} && rm -i
> ${PKGLIST}
Not being much of a programmer nowadays, I just do this:
$ alias emerj='sudo emerge --jobs=24 --load-average=48 --keep-going'
$ emerj gcc && emerj glibc libtool
$ emerj --exclude="gcc glibc libtool" system
$ emerj --exclude="$(cat system.pkgs)" -e world
...in which I've previously listed the 43 packages installed by emerj system
in system.pkgs.
--
Regards
Peter
