prerm is in dahdi-dkms 1:2.5.0.1+dfsg-1ubuntu3.
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 | #!/bin/sh
NAME=dahdi
PACKAGE_NAME=$NAME-dkms
CVERSION=`dpkg-query -W -f='${Version}' $PACKAGE_NAME | cut -d\: -f2`
case "$1" in
remove|upgrade|purge)
echo "Removing all DKMS Modules"
dkms remove -m $NAME -v $CVERSION --all > /dev/null
echo "Done."
;;
purge)
delgroup --quiet $NAME
;;
esac
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