postinst is in automysqlbackup 2.6+debian.4-1.
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 | #!/bin/sh
set -e
if [ -e /etc/default/automysqlbackup ] ; then
	. /etc/default/automysqlbackup
fi
if [ -z "${BACKUPDIR}" ] ; then
	BACKUPDIR=/var/lib/automysqlbackup
fi
if [ -d ${BACKUPDIR} ] ; then
	find ${BACKUPDIR} -type f -exec chmod 600 {} \;
fi
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