preinst is in sendmail-bin 8.15.2-3.
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 | #!/bin/sh
set -e;
# do we have debconf?
if [ -f /usr/share/debconf/confmodule ]; then
DEBCONF=true;
. /usr/share/debconf/confmodule;
else
DEBCONF='';
fi;
if [ "$1" = "upgrade" ]; then
# Prevent cronjob from running during upgrade...
if [ -f /etc/cron.d/sendmail ]; then
echo "#preinst" > /etc/cron.d/sendmail;
fi;
fi
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