prerm is in openvas-server 2.0.3-6.
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 | #!/bin/sh
set -e
if [ "$1" != "upgrade" ]; then
	if [ -x "/etc/init.d/openvas-server" ] ; then
		        if which invoke-rc.d >/dev/null 2>&1; then
		                invoke-rc.d openvas-server stop
			else
	        		/etc/init.d/openvas-server stop
			fi
	else
                start-stop-daemon --stop --quiet --oknodo --exec /usr/sbin/openvasd
	fi
fi
exit 0
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