preinst is in rxvt-unicode 9.22-3.
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 | #!/bin/sh
set -e
case $1 in
upgrade)
# clean up after old versions, unless the admin chose urxvtcd
if ! update-alternatives --query x-terminal-emulator | grep -q \
'^Value: /usr/bin/urxvtcd$'; then
update-alternatives --remove x-terminal-emulator /usr/bin/urxvtcd
fi
if dpkg --compare-versions $2 lt 9.22-2; then
# Drop rxvt alternative: no longer needed and we provide the symlink
if update-alternatives --list rxvt >/dev/null; then
update-alternatives --remove-all rxvt
fi
fi
;;
install)
# Drop rxvt alternative: no longer needed and we provide the symlink
if update-alternatives --list rxvt >/dev/null; then
update-alternatives --remove-all rxvt
fi
;;
esac
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