preinst is in binutils-gold 2.22-8+deb7u2.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | #! /bin/sh
set -e
if [ install = "$1" -o upgrade = "$1" ]; then
if [ -n "$2" ] && dpkg --compare-versions $2 lt 2.20-3; then
case "$(dpkg-divert --list /usr/bin/ld)" in
*ld.single*)
rm -f /usr/bin/ld
dpkg-divert \
--package binutils-gold \
--remove --rename \
--divert /usr/bin/ld.single /usr/bin/ld
esac
fi
dpkg-divert \
--package binutils-gold \
--add --rename \
--divert /usr/bin/ld.bfd-link /usr/bin/ld
dpkg-divert \
--package binutils-gold \
--add --rename \
--divert /usr/share/man/man1/ld.bfd-link.1.gz /usr/share/man/man1/ld.1.gz
fi
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