install and update oscam on raspbian

install-oscam.sh

#!/bin/bash

set -e

if [[ $EUID -ne 0 ]]; then
  echo "This script must be run as root" 1>&2
  exit 1
fi

function install() {
  apt-get -y install apt-utils dialog usbutils gcc g++ wget build-essential subversion libpcsclite1 libpcsclite-dev libssl-dev cmake make  libusb-1.0-0-dev nano pcscd pcsc-tools
  ln -s /usr/lib/arm-linux-gnueabihf/libusb-1.0.a  /usr/local/lib/libusb-1.0.a
  cd /usr/src
  svn co http://www.streamboard.tv/svn/oscam/trunk oscam-svn
  build
  mkdir -p /var/log/oscam
  install-service
}

function update() {
  if is-update-needed; then
    cd /usr/src/oscam-svn
    svn update
    systemctl stop oscam
    build
    systemctl start oscam
  else
    echo "Already at latest revision"
  fi
}

function build() {
  cd /usr/src/oscam-svn
  rm -rf build
  mkdir build
  chmod 755 build
  cd build
  cmake -DHAVE_LIBUSB=1 -DHAVE_PCSC=1 -DWEBIF=1 -DHAVE_LIBCRYPTO=1 -DWITH_SSL=1 ..
  make
  cp oscam /var/local/
}

function is-update-needed() {
  cd /usr/src/oscam-svn
  local LAST_REVISION=$(svn info -r HEAD | grep -i "Last Changed Rev" | cut -d' ' -f4)
  local CURRENT_REVISION=$(svn info | grep -i "Last Changed Rev" | cut -d' ' -f4)
  if [[ $LAST_REVISION>$CURRENT_REVISION ]]; then
    return 0
  else
    return 1
  fi
}

function install-service() {
  cat > /etc/systemd/system/oscam.service <<EOF
## more info: http://techblog.thomserve.co.uk/2016/09/30/systemd-script-for-oscam/
[Unit]
Description=OScam
After=network.target
Requires=network.target

[Service]
Type=forking
PIDFile=/var/run/oscam.pid
ExecStart=/var/local/oscam --daemon --pidfile /var/run/oscam.pid
ExecStop=/usr/bin/rm /var/run/oscam.pid
TimeoutStopSec=1
Restart=always
RestartSec=5
StartLimitInterval=0

[Install]
WantedBy=multi-user.target
EOF
  systemctl daemon-reload
  systemctl start oscam
  systemctl status oscam
}

if [[ -d /usr/src/oscam-svn/ ]]; then
  update
else
  install
fi

how can i change the port for oscam? i am not able to find the config files