preinst is in anacron 2.3-14ubuntu1.
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 | #!/bin/sh
set -e
# Automatically added by dh_installinit
if [ "$1" = install ] || [ "$1" = upgrade ]; then
if [ -e "/etc/init.d/anacron" ] && [ ! -L "/etc/init.d/anacron" ]; then
if [ "`md5sum \"/etc/init.d/anacron\" | sed -e \"s/ .*//\"`" != \
"`dpkg-query -W -f='${Conffiles}' anacron | sed -n -e \"\\\\' /etc/init.d/anacron '{s/ obsolete$//;s/.* //p}\"`" ]
then
echo "Obsolete conffile /etc/init.d/anacron has been modified by you, renaming to .dpkg-bak"
mv -f "/etc/init.d/anacron" "/etc/init.d/anacron.dpkg-bak"
else
rm -f "/etc/init.d/anacron"
fi
fi
fi
# End automatically added section
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