preinst is in apache2-mpm-prefork 2.2.22-1ubuntu1.
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 -e
#Debian preinstall handling for apache2
# Thom May <thom@debian.org>
if [ "$2" ] && dpkg --compare-versions "$2" lt 2.2; then
if [ -x "/etc/init.d/apache2" ]; then
if [ -x /usr/sbin/invoke-rc.d ]; then
invoke-rc.d apache2 stop || true
else
/etc/init.d/apache2 stop || true
fi
fi
chmod -x /usr/sbin/apache2
fi
case "$1" in
install)
rm -f /var/cache/apache2/reload
;;
upgrade)
if [ -d /var/cache/apache2 ]; then
touch /var/cache/apache2/reload
fi
;;
*)
;;
esac
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