output() {
  while IFS= read line; do
    echo "-- $line"
  done
}

post_install() {
  output << EOF
In order to use the openafs-client you have to install the openafs kernel
module (openafs-modules or openafs-modules-dkms).

You may want to edit /etc/openafs/ThisCell to be your current cell.

Afterwards you can enable and start the openafs-client:
  systemctl enable openafs-client.service
  systemctl start openafs-client.service
EOF
}

post_remove() {
    output << EOF
The following directories have not been removed. You can manually remove them
after making sure that openafs is not running anymore:
  /afs
  /var/cache/openafs
EOF
}