prerm is in qemu-system-misc 2.0.0~rc1+dfsg-0ubuntu3.
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 26 27 28 | #!/bin/sh
set -e
# == begin update-alternatives maintscript fragment ==
# This is a script fragment used in postinst, prerm and postrm maintscripts.
# Set up /usr/bin/qemu alternative to be one the qemu-system emulators.
# See #722914 for details about how it is done
arches="alpha cris lm32 m68k microblaze microblazeel moxie or32 sh4 sh4eb s390x xtensa xtensaeb unicore32" # our architectures
case "$DPKG_MAINTSCRIPT_NAME:$1" in
postinst:configure )
for arch in $arches ; do
# Set i386 as highest priority,
# as it has been the default qemu for quite some time.
case $arch in i386) prio=20;; *) prio=10;; esac
update-alternatives --install /usr/bin/qemu qemu \
/usr/bin/qemu-system-$arch $prio
done;;
prerm:remove | postrm:disappear )
for arch in $arches ; do
update-alternatives --remove qemu /usr/bin/qemu-system-$arch
done;;
esac
# == end update-alternatives maintscript fragment ==
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