preinst is in dpm-copy-server-postgres 1.10.0-2.
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
# Version 1.10.0 starts using defaults-disabled
# Remove rc.d links if upgrading from an older version and the service is
# disabled in /etc/default
if [ -n "$2" ] ; then
if dpkg --compare-versions "$2" "<<" "1.10.0" ; then
[ -r /etc/default/dpmcopyd ] && . /etc/default/dpmcopyd
if [ "${RUN_DPMCOPYDAEMON}" != "yes" ] ; then
update-rc.d -f dpmcopyd remove >/dev/null
fi
fi
fi
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