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.SH "SEARCHING FOR FILE COLLISIONS"
.PP
A last option of \fBqfile\fP is \fB\-\-exclude\fP (\fB\-x\fP), which will makes
it skip one particular package when doing its files owners search. This option
takes one argument, which can be a package name (\fBbash\fP or
\fBapp\-shells/bash\fP), or a versioned package (\fBbash\-3.2_p9\-r1\fP or
\fBapp\-shells/bash\-3.2_p9\-r1\fP), or a slotted package (\fBbash:0\fP or
\fBapp\-shells/bash:0\fP). It is useful for finding file collisions between
packages (ie.\ comparing the contents of one package with the contents of all
the others).
.PP
For example, the following script will search collisions between all your
installed packages. Be careful, this will takes time:
.nf\fI
#!/bin/bash
cd $(portageq vdb_path)
for pkg in *-*/*-* ; do
[[ -f ${pkg}/CONTENTS ]] || continue
collisions=$(sed -n \\
'/^obj\\|^sym/s:^... \\([^ ]\\+\\).*:\1:p' \\
${pkg}/CONTENTS \\
| qfile -e -x ${pkg} -f -)
[[ -n ${collisions} ]] \\
&& echo ">>> ${pkg}:" \\
&& echo "${collisions}"
done
.fi
.PP
An other example is the following script, which can be used to check that a
binary package (.tbz2) has no conflict with any of your installed packages,
but the one it may replace (same name and slot), if any:
.nf\fI
#!/bin/bash
pkgver=$(basename "${1}")
pkgver=${pkgver%%.tbz2}
pn=$(qatom ${pkgver} | cut -d\\ -f2)
tmpdir=$(mktemp -t -d) || exit 1
tarbz2=${tmpdir}/${pkgver}.tar.bz2
xpak=${tmpdir}/${pkgver}.xpak
qtbz2 -s "${1}" "${tarbz2}" "${xpak}"
categ=$(qxpak -O -x "${xpak}" CATEGORY)
slot=$(qxpak -O -x "${xpak}" SLOT)
tar tjf "${tarbz2}" \\
| sed -e 's:^\\./:/:' -e '\\:/$:d' \\
| qfile -e -f - -x ${categ}/${pn}:${slot}
rm -rf "${tmpdir}"
.PP
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