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Editing File: /var/lib/dpkg/info/libwrap0:amd64.postinst

#!/bin/sh -e

create_hosts_files() {
  if [ ! -e /etc/hosts.allow ]; then
    cat > /etc/hosts.allow <<EOF
# /etc/hosts.allow: list of hosts that are allowed to access the system.
#                   See the manual pages hosts_access(5) and hosts_options(5).
#
# Example:    ALL: LOCAL @some_netgroup
#             ALL: .foobar.edu EXCEPT terminalserver.foobar.edu
#
# If you're going to protect the portmapper use the name "rpcbind" for the
# daemon name. See rpcbind(8) and rpc.mountd(8) for further information.
#

EOF
  fi

if [ ! -e /etc/hosts.deny ]; then
    cat > /etc/hosts.deny <<EOF
# /etc/hosts.deny: list of hosts that are _not_ allowed to access the system.
#                  See the manual pages hosts_access(5) and hosts_options(5).
#
# Example:    ALL: some.host.name, .some.domain
#             ALL EXCEPT in.fingerd: other.host.name, .other.domain
#
# If you're going to protect the portmapper use the name "rpcbind" for the
# daemon name. See rpcbind(8) and rpc.mountd(8) for further information.
#
# The PARANOID wildcard matches any host whose name does not match its
# address.
#
# You may wish to enable this to ensure any programs that don't
# validate looked up hostnames still leave understandable logs. In past
# versions of Debian this has been the default.
# ALL: PARANOID

EOF
  fi
}

case "$1" in
    configure)
    create_hosts_files
    ;;

abort-upgrade|abort-remove|abort-deconfigure)
    ;;

*)
    echo "postinst called with unknown argument '$1'" >&2
    exit 1
    ;;
esac

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