diff --git a/neu.sh b/neu.sh
deleted file mode 100755
index 1b39f38..0000000
--- a/neu.sh
+++ /dev/null
@@ -1,315 +0,0 @@
-#!/usr/bin/env bash
-
-# This is my Linux server configuration utility (sconfig.sh)
-# Read more about it here: https://git.socialnerds.org/david/sconfig
-
-# ***** CONFIG *****
-
-# general information
-NAME="sconfig"
-TITLE="Server Configuration"
-DESCRIPTION="The Linux server configuration utility"
-VERSION="0.2"
-AUTHOR="david@socialnerds.org"
-WEBSITE="https://git.socialnerds.org/david/sconfig"
-REPO="$WEBSITE.git"
-LICENSE="https://git.socialnerds.org/david/sconfig/raw/branch/main/LICENSE"
-
-# default settings
-CONFIGFILE="/etc/sconfig/sconfig.conf"
-DEBUG=0
-LOGFILE=""
-
-declare -A CONFIG
-CONFIG=([debug_enabled]=$DEBUG
-        [logfile]="$LOGFILE"
-        [btrfs_enabled]=
-        [btrfs_subvols]="/"
-        [btrfs_versions]=30
-        [miab_enabled]=
-        [miab_host]="box.example.com"
-        [miab_user]="admin@example.com"
-        [miab_password]="verysecret!=+%password"
-        [healthchecks_enabled]=
-        [healthchecks_baseurl]=""
-        [healthchecks_id]="")
-
-declare -A PACKAGES
-PACKAGES=([ubuntu]="curl less vim"
-          [arch]="curl less vim"
-          [debian]="curl less vim")
-
-# external library files and command prerequsites
-# both unused for now
-#LIBRARIES=("library.sh" "ui.sh")
-#DEPENDENCIES=("curl" "more" "sort")
-
-# ***** FUNCTION DEFINITIONS *****
-# execute upon Ctrl-C detection
-function bashtrap {
-  library_log warn "Ctrl-C detected, exiting"
-  exit 2
-}
-
-# return 1/false if not executed as root
-function amiroot {
-  if [ "$(whoami)" != "root" ]; then
-    return 1
-  fi
-}
-
-# check if stdout is a TTY and return 1 if it is not
-# for detecting if executed by cron (or user)
-function amitty {
-  if [ ! -t 1 ]; then
-    return 1
-  fi
-}
-
-# general text output method
-# usage: output <loglevel> <message>
-function library_log {
-  if [ "$1" != "debug" -o $DEBUG -eq 1 ]; then
-    echo "[$1] ${@:2}"
-    if [ "$LOGFILE" -a -w "$LOGFILE" ]; then
-      echo "[$(date +%Y%m%d%H%M%S)][$1] ${@:2}" >> "$LOGFILE"
-    fi
-  fi
-}
-
-# very simple configfile parser
-# it fills a global variable with key=value pairs from a configfile
-# usage: config_read <path/to/configfile>
-function config_read {
-  if [ "$1" -a -r "$1" ]; then
-    local FILE="$1"
-    while read -r LINE || [ -n "$LINE" ]; do
-      local FILTER='^[0-9a-zA-Z]+[_-]?[0-9a-zA-Z]+=.*$'
-      if [[ "$LINE" =~ $FILTER ]]; then
-        CONFIG[${LINE%%=*}]=${LINE#*=}
-      fi
-    done < $FILE
-  else
-    return 1
-  fi
-}
-
-# very simple configfile writer
-# it (over)writes a configfile with key=value pairs from a global variable
-# usage: config_write <path/to/configfile>
-function config_write {
-  if [ "$1" ]; then
-    local FILE="$1"
-    for KEY in ${!CONFIG[@]}; do
-      echo "$KEY=${CONFIG[$KEY]}"
-    done | sort > $FILE
-  else
-    return 1
-  fi
-}
-
-# get the linux distribution id from /etc/os-release
-# only systems with this file present are supported
-function library_get_distro {
-  local RELEASE_FILE="/etc/os-release"
-  if [ -r $RELEASE_FILE ]; then
-    while read -r LINE || [ -n "$LINE" ]; do
-      local FILTER='^ID='
-      if [[ "$LINE" =~ $FILTER ]]; then
-        echo "${LINE#*=}"; break
-      fi
-    done < $RELEASE_FILE
-  fi
-}
-
-# retrieve path to this script
-#function get_scriptpath {
-#  local DIRNAME="$(dirname $0)"
-#  if [ -L $0 ]; then
-#    local DIRLINK="$(dirname $(readlink $0))"
-#    if [ $DIRLINK == "."  ]; then
-#      local SCRIPTPATH="$DIRNAME"
-#    else
-#      local SCRIPTPATH="$DIRNAME/$DIRLINK"
-#    fi
-#  else
-#    local SCRIPTPATH="$DIRNAME"
-#  fi
-#  if [[ $SCRIPTPATH =~ ^/.* ]]; then
-#    echo "$SCRIPTPATH"
-#  else
-#    #TODO: redirect stdout and stderr for cd to /dev/null
-#    cd $SCRIPTPATH; echo "$PWD"
-#  fi
-#}
-
-#function main {
-#  for MODULE in ${MODULES[@]}; do
-#    library_log debug "Module found ($MODULE)"
-#  done
-#  library_log info "This is an informational message"; sleep 2
-#}
-
-# print the usage message
-function usage {
-  echo; echo "Usage: $(basename $0) <OPTIONS>"
-  echo ""; echo "OPTIONS:"
-  echo "  -h           Show help message"
-  echo "  -i           Show script information (Version, etc.)"
-  echo "  -c <file>    Use custom configuration file"
-  echo "  -l <file>    Use custom log file"
-  echo "  -d|-v        Enable verbose output"; echo
-}
-
-# print general information
-function info {
-  echo; echo "$NAME - $DESCRIPTION"; echo
-  echo "Version:     $VERSION"
-  echo "Author:      $AUTHOR"
-  echo "Website:     $WEBSITE"
-  echo "License:     $LICENSE"; echo
-}
-
-# ***** START *****
-# bashtrap initialization
-trap bashtrap INT
-
-# require root
-if ! amiroot; then
-  library_log error "You need to run this script with elevated privileges"
-  exit 1
-fi
-
-# option handler
-while getopts "c:l:dvih" ARG; do
-  case $ARG in
-    c)
-      CONFIGFILE="$OPTARG"
-      library_log debug "Custom config file set by command line option [-$ARG $OPTARG]"
-      ;;
-    l)
-      LOGFILE="$OPTARG"
-      library_log debug "Custom log file set by command line option [-$ARG $OPTARG]"
-      ;;
-    d|v)
-      if [ ! $DEBUG -eq 1 ]; then
-        DEBUG=1
-        library_log debug "Debug mode enabled by command line option [-$ARG]"
-      fi
-      ;;
-    i)
-      info; exit 0
-      ;;
-    h)
-      usage; exit 0
-      ;;
-    *)
-      usage; exit 1
-      ;;
-  esac
-done
-
-# loading config values (from $CONFIGFILE)
-if ! config_read "$CONFIGFILE"; then
-  library_log warning "Could not read config file, skipping [$CONFIGFILE]"
-fi
-
-# setting runtime variables
-#SCRIPTPATH="$(get_scriptpath)"
-#MODULES=($(ls $SCRIPTPATH/modules/*.sh))
-if [ ! $DEBUG -eq 1 ]; then
-  DEBUG=${CONFIG[debug_enabled]}
-fi
-if [ -z $LOGFILE ]; then
-  LOGFILE=${CONFIG[logfile]}
-fi
-
-# create logfile if missing
-if [ "$LOGFILE" -a ! -w "$LOGFILE" ]; then
-  if [ ! -d $(dirname "$LOGFILE") ]; then
-    mkdir -p $(dirname "$LOGFILE")
-  fi
-  touch "$LOGFILE"
-fi
-
-# create configfile if missing
-if [ ! -w $CONFIGFILE ]; then
-  if [ ! -d $(dirname $CONFIGFILE) ]; then
-    mkdir -p $(dirname $CONFIGFILE)
-  fi
-  # write config values (to $CONFIGFILE)
-  library_log info "Creating new config file [$CONFIGFILE]"
-  if ! config_write "$CONFIGFILE"; then
-    library_log warning "Could not write to config file [$CONFIGFILE]"
-  fi
-fi
-
-# fix file permissions
-library_log debug "Fixing file permissions"
-chown $(id -u):$(id -g) "$CONFIGFILE"
-chmod 600 "$CONFIGFILE"
-if [ "$LOGFILE" ]; then
-  chown $(id -u):$(id -g) "$LOGFILE"
-  chmod 644 "$LOGFILE"
-fi
-
-# loading libraries
-#for LIBRARY in ${LIBRARIES[@]}; do
-#  if [ -r $SCRIPTPATH/$LIBRARY ]; then
-#    source $SCRIPTPATH/$LIBRARY
-#    if [ $DEBUG -eq 1 ]; then
-#      echo "[debug] Library loaded [$LIBRARY]"
-#    fi
-#  else
-#    echo "[error] Library not found [$LIBRARY]"
-#    exit 1
-#  fi
-#done
-
-# checking for the availibility of ${DEPENDENCIES[@]}
-#TODO: loop through all before reporting the missing depenencies
-#for DEPENDENCY in ${DEPENDENCIES[@]}; do
-#  if ! $(command -v $DEPENDENCY &> /dev/null); then
-#    library_log error "Dependency not found [$DEPENDENCY]"
-#    #exit 1
-#  fi
-#done
-
-# update package repositories and install required packages
-case "$(library_get_distro)" in
-  debian|ubuntu|raspbian)
-    library_log info "Updating package repositories"
-    apt-get update > /dev/null
-    if [ $? -eq 0 ]; then
-      library_log debug "Success!"
-    else
-      library_log error "An error occured while updating package repositories"
-      exit 1
-    fi
-    ;;
-  arch)
-    library_log info "Updating package repositories"
-    pacman -Sy > /dev/null
-    if [ $? -eq 0 ]; then
-      library_log debug "Success!"
-    else
-      library_log error "An error occured while updating package repositories"
-      exit 1
-    fi
-    ;;
-  *)
-    library_log error "Could not determine your operating system"
-    exit 1
-    ;;
-esac
-
-# main program, execute only if called directly
-if [ $(basename $0) == "$NAME" -o $(basename $0) == "$NAME.sh" ]; then
-  # output useful debugging information
-  library_log debug "*****  START  *****"
-#  main
-fi
-
-# ***** END *****
-library_log debug "*****  END  *****"
-exit 0
diff --git a/sconfig.sh b/sconfig.sh
index 3fd5f3c..ee602a8 100755
--- a/sconfig.sh
+++ b/sconfig.sh
@@ -1,43 +1,203 @@
 #!/usr/bin/env bash
 
+# This is my Linux server configuration utility (sconfig.sh)
+# Read more about it here: https://git.socialnerds.org/david/sconfig
 
-## name:       sconfig.sh
-## author:     david@socialnerds.org
-## version:    0.1
-##
-## decription: This is a script to help you configure
-##             various aspects of a linux server.
-##
-## features:   manage user accounts and their keys
-##             update operating system packages
-##             install admin tools
-##             harden sshd
-##             enable ufw
-##             setup docker
-##             setup nginx & acme.sh
-##             setup duplicity
-##             setup snmpd
-##
-## usage:      ./sconfig.sh
-##
-## changelog:  2020-06-29 - implemented basic features, not quite there yet
-##             2020-06-22 - first draft of a working menu
-##             2020-06-21 - started development of v0.1
+# ***** CONFIG *****
+
+# general information
+NAME="sconfig"
+TITLE="Server Configuration"
+DESCRIPTION="The Linux server configuration utility"
+VERSION="0.2"
+AUTHOR="david@socialnerds.org"
+WEBSITE="https://git.socialnerds.org/david/sconfig"
+REPO="$WEBSITE.git"
+LICENSE="https://git.socialnerds.org/david/sconfig/raw/branch/main/LICENSE"
+
+# default settings
+CONFIGFILE="/etc/sconfig/sconfig.conf"
+DEBUG=0
+LOGFILE=""
+INTERACTIVE=2
+
+declare -A CONFIG
+CONFIG=([debug_enabled]=$DEBUG
+        [logfile]="$LOGFILE"
+        [btrfs_enabled]=
+        [btrfs_subvols]="/"
+        [btrfs_versions]=30
+        [miab_enabled]=
+        [miab_host]="box.example.com"
+        [miab_user]="admin@example.com"
+        [miab_password]="verysecret!=+%password"
+        [healthchecks_enabled]=
+        [healthchecks_baseurl]=""
+        [healthchecks_id]="")
+
+declare -A PACKAGES
+PACKAGES=([ubuntu]="curl less vim"
+          [arch]="curl less vim"
+          [debian]="curl less vim")
+
+# external library files and command prerequsites
+#LIBRARIES=("library.sh" "ui.sh")
+DEPENDENCIES=("sort" "stat" "date" "whoami" "id"
+              "tput" "chmod" "chown" "dirname"
+              "basename" "seq")
+
+# ***** FUNCTION DEFINITIONS *****
+# execute upon Ctrl-C detection
+function bashtrap {
+  if [ $INTERACTIVE -eq 1 ]; then
+    header
+    echo "Detected Ctrl-C"; echo "Dropping to shell"; sleep 1
+    clear; exit 2
+  else
+    library_log warn "Ctrl-C detected, exiting"
+    exit 2
+  fi
+}
 
 
-# **** start of script ****
 
-#  ****  bash trap initialisation  ****
-trap bashtrap INT
+# return 1/false if not executed as root
+function amiroot {
+  if [ "$(whoami)" != "root" ]; then
+    return 1
+  fi
+}
 
-## functions
+# check if stdout is a TTY and return 1 if it is not
+# for detecting if executed by cron (or user)
+function amitty {
+  if [ ! -t 1 ]; then
+    return 1
+  fi
+}
 
-#detect Ctrl-c
-bashtrap() {
-  header
-  echo "Detected Ctrl-C"; echo "Dropping to shell"; sleep 1
-  clear; exit 0
+# general text output method
+# usage: output <loglevel> <message>
+function library_log {
+  if [ "$1" != "debug" -o $DEBUG -eq 1 ]; then
+    echo "[$1] ${@:2}"
+    if [ "$LOGFILE" -a -w "$LOGFILE" ]; then
+      echo "[$(date +%Y%m%d%H%M%S)][$1] ${@:2}" >> "$LOGFILE"
+    fi
+  fi
+}
 
+# very simple configfile parser
+# it fills a global variable with key=value pairs from a configfile
+# usage: config_read <path/to/configfile>
+function config_read {
+  if [ "$1" -a -r "$1" ]; then
+    local FILE="$1"
+    while read -r LINE || [ -n "$LINE" ]; do
+      local FILTER='^[0-9a-zA-Z]+[_-]?[0-9a-zA-Z]+=.*$'
+      if [[ "$LINE" =~ $FILTER ]]; then
+        CONFIG[${LINE%%=*}]=${LINE#*=}
+      fi
+    done < $FILE
+  else
+    return 1
+  fi
+}
+
+# very simple configfile writer
+# it (over)writes a configfile with key=value pairs from a global variable
+# usage: config_write <path/to/configfile>
+function config_write {
+  if [ "$1" ]; then
+    local FILE="$1"
+    for KEY in ${!CONFIG[@]}; do
+      echo "$KEY=${CONFIG[$KEY]}"
+    done | sort > $FILE
+  else
+    return 1
+  fi
+}
+
+# get the linux distribution id from /etc/os-release
+# only systems with this file present are supported
+function get_distro {
+  local RELEASE_FILE="/etc/os-release"
+  if [ -r $RELEASE_FILE ]; then
+    while read -r LINE || [ -n "$LINE" ]; do
+      local FILTER='^ID='
+      if [[ "$LINE" =~ $FILTER ]]; then
+        echo "${LINE#*=}"; break
+      fi
+    done < $RELEASE_FILE
+  fi
+}
+
+function set_fs_permissions {
+  #TODO: check if $1 is a valid mask
+  #TODO: check if is ownership is wrong
+  if [ $# -eq 2 ]; then
+    if [ -f "$2" -o -d "$2" ]; then
+      local PERM="$1"
+      local FILE="$2"
+      local STAT=$(stat -c "%a" "$FILE")
+      if [ $PERM -ne $STAT ]; then
+        library_log debug "Fixing wrong file permissions [$FILE: $STAT -> $PERM]"
+        chown $USERID:$GROUPID "$FILE"
+        chmod $PERM "$FILE"
+      fi
+    fi
+  else
+    return 1
+  fi
+}
+
+# retrieve path to this script
+#function get_scriptpath {
+#  local DIRNAME="$(dirname $0)"
+#  if [ -L $0 ]; then
+#    local DIRLINK="$(dirname $(readlink $0))"
+#    if [ $DIRLINK == "."  ]; then
+#      local SCRIPTPATH="$DIRNAME"
+#    else
+#      local SCRIPTPATH="$DIRNAME/$DIRLINK"
+#    fi
+#  else
+#    local SCRIPTPATH="$DIRNAME"
+#  fi
+#  if [[ $SCRIPTPATH =~ ^/.* ]]; then
+#    echo "$SCRIPTPATH"
+#  else
+#    #TODO: redirect stdout and stderr for cd to /dev/null
+#    cd $SCRIPTPATH; echo "$PWD"
+#  fi
+#}
+
+#function main {
+#  for MODULE in ${MODULES[@]}; do
+#    library_log debug "Module found ($MODULE)"
+#  done
+#  library_log info "This is an informational message"; sleep 2
+#}
+
+# print the usage message
+function usage {
+  echo; echo "Usage: $(basename $0) <OPTIONS>"
+  echo ""; echo "OPTIONS:"
+  echo "  -h           Show help message"
+  echo "  -i           Show script information (Version, etc.)"
+  echo "  -c <file>    Use custom configuration file"
+  echo "  -l <file>    Use custom log file"
+  echo "  -n           Force non-interactive mode"
+  echo "  -d|-v        Enable verbose output"; echo
+}
+
+# print general information
+function info {
+  echo; echo "$NAME - $DESCRIPTION"; echo
+  echo "Version:     $VERSION"
+  echo "Author:      $AUTHOR"
+  echo "Website:     $WEBSITE"
+  echo "License:     $LICENSE"; echo
 }
 
 #print header
@@ -46,7 +206,7 @@ header() {
   local cols=$(tput cols); local char="="
   if [ $cols -gt 59 ]; then
     local i=0; while [ $i != $((cols)) ]; do local chars="$chars$char"; i=$((i+1)); done
-    echo $chars; echo "Server configuration"; echo -e "$chars\n"
+    echo $chars; echo "$TITLE"; echo -e "$chars\n"
   else
     echo "error: terminal not wide enough (it must be at least 60 characters wide)"; exit 1
   fi
@@ -83,165 +243,316 @@ prompt() {
   esac
 }
 
-#get sudo
-makemeasandwich()
-{
-  while true; do
-    if $(sudo -n true 2>/dev/null); then
-      return 0
-    else
-      header
-      content "With great power comes great responsibility!"
-      password=$(prompt password)
-      echo "$password" | sudo -S -v 2>/dev/null
-      if [ $? -ne 0 ]; then
-        header
-        echo "Wrong password. Try again."; sleep 1
-        continue
+# get sudo
+#makemeasandwich()
+#{
+#  while true; do
+#    if $(sudo -n true 2>/dev/null); then
+#      return 0
+#    else
+#      header
+#      content "With great power comes great responsibility!"
+#      password=$(prompt password)
+#      echo "$password" | sudo -S -v 2>/dev/null
+#      if [ $? -ne 0 ]; then
+#        header
+#        echo "Wrong password. Try again."; sleep 1
+#        continue
+#      fi
+#    fi
+#  done
+#}
+
+# ask for confirmation
+function areyousure {
+  echo "i am sure"
+}
+
+# update package repositories and install required packages
+function update_package_repos {
+  case "$(get_distro)" in
+    debian|ubuntu|raspbian)
+      library_log info "Updating package repositories"
+      apt-get update > /dev/null
+      if [ $? -eq 0 ]; then
+        library_log debug "Success!"
+      else
+        library_log error "An error occured while updating package repositories"
+        exit 1
       fi
-    fi
-  done
-}
-
-#print results of system checks
-status() {
-  pass
-}
-
-
-## run main loop
-while true; do
-  # Main menu
-  header
-  content "1) System status" \
-          "2) Configuration" \
-          "3) Maintenance" \
-          "" \
-          "4) Reboot" \
-          "5) Shutdown" \
-          "6) Exit to shell"
-  case $(prompt) in
-    1)
-      header
-      echo "Not yet implemented"; sleep 1
       ;;
-    2)
-      while true; do
-        # Configuration submenu
-        header
-        content "1) Users" \
-                "2) Install admin utilities" \
-                "" \
-                "*) Return to main menu"
-        case $(prompt) in
-          1)
-            header
-            echo "Not yet implemented"; sleep 1
-            ;;
-          2)
-            header
-            echo "Not yet implemented"; sleep 1
-            ;;
-          *)
-            break
-            ;;
-        esac
-      done
+    arch)
+      library_log info "Updating package repositories"
+      pacman -Sy > /dev/null
+      if [ $? -eq 0 ]; then
+        library_log debug "Success!"
+      else
+        library_log error "An error occured while updating package repositories"
+        exit 1
+      fi
       ;;
-    3)
-      while true; do
-        # Maintenance submenu
-        header
-        content "1) System updates" \
-                "2) Backup" \
-                "3) Update this script" \
-                "" \
-                "*) Return to main menu"
-        case $(prompt) in
-          1)
-            #update system packages
-            makemeasandwich
-            if [ $? -eq 0 ]; then
-              clear; header; sudo apt update && sudo apt dist-upgrade -y && sudo apt autoremove -y && sudo apt autoclean -y
-              clear; header; echo "System is up-to-date"; sleep 1
-            fi
-            ;;
-          2)
-            header
-            echo "Not yet implemented"; sleep 1
-            ;;
-          3)
-            # Update this script submenu
-            header
-            #TODO: check for new version
-            if false; then #this should run the check
-              content "A new version of sconfig is available." \
-                      "Do you want to update?" \
-                      "" \
-                      "1) Yes" \
-                      "2) No"
-              if [ $(prompt) -eq 1 ]; then
-                  #run self update
-                  header
-                  echo "Update not yet implemented"; sleep 1
-              fi
-            else
-              header
-              echo "You are already up-to-date."; sleep 1
-            fi
-            ;;
-          *)
-            break
-            ;;
-        esac
-      done
-      ;;
-    4)
-      # Reboot submenu
-      header
-      content "1) Yes, i really want to reboot." \
-              "*) Get me out of here!"
-      case $(prompt) in
-        1)
-          #reboot server
-          makemeasandwich
-          if [ $? -eq 0 ]; then
-            header
-            echo "Rebooting server"; sleep 1
-            sudo shutdown -r now
-          fi
-          ;;
-        *)
-          continue
-          ;;
-      esac
-      ;;
-    5)
-      # Shutdown submenu
-      header
-      content "1) Yes, i really want to shutdown." \
-              "*) Get me out of here!"
-      case $(prompt) in
-        1)
-          #shutdown server
-          makemeasandwich
-          if [ $? -eq 0 ]; then
-            header
-            echo "Shutting down server"; sleep 1
-            sudo shutdown -h now
-          fi
-          ;;
-        *)
-          continue
-          ;;
-      esac
-      ;;
-    6)
-      clear; exit 0
+    *)
+      library_log error "Could not determine your operating system"
+      exit 1
       ;;
   esac
+}
 
+# ***** START *****
+# bashtrap initialization
+trap bashtrap INT
+
+# require root
+if ! amiroot; then
+  library_log error "You need to run this script with elevated privileges"
+  exit 1
+fi
+
+# checking for the availibility of ${DEPENDENCIES[@]}
+#TODO: rename to PREREQISITES
+MISSING_DEPENDENCIES=()
+for DEPENDENCY in ${DEPENDENCIES[@]}; do
+  if ! $(command -v $DEPENDENCY &> /dev/null); then
+    MISSING_DEPENDENCIES+=("$DEPENDENCY")
+  fi
+done
+if [ $MISSING_DEPENDENCIES ]; then
+  library_log error "Dependencies not found [${MISSING_DEPENDENCIES[@]}]"
+  exit 1
+fi
+
+# option handler
+while getopts "c:l:ndvih" ARG; do
+  case $ARG in
+    c)
+      CONFIGFILE="$OPTARG"
+      library_log debug "Custom config file set by command line option [-$ARG $OPTARG]"
+      ;;
+    l)
+      LOGFILE="$OPTARG"
+      library_log debug "Custom log file set by command line option [-$ARG $OPTARG]"
+      ;;
+    n)
+      INTERACTIVE=0
+      library_log debug "Forcing non-interactive mode by command line option [-$ARG]"
+      ;;
+    d|v)
+      if [ ! $DEBUG -eq 1 ]; then
+        DEBUG=1
+        library_log debug "Debug mode enabled by command line option [-$ARG]"
+      fi
+      ;;
+    i)
+      info; exit 0
+      ;;
+    h)
+      usage; exit 0
+      ;;
+    *)
+      usage; exit 1
+      ;;
+  esac
 done
 
-# **** end of script ****
+# loading config values (from $CONFIGFILE)
+if ! config_read "$CONFIGFILE"; then
+  library_log warning "Could not read config file, skipping [$CONFIGFILE]"
+fi
+
+# setting runtime variables
+USERID=$(id -u)
+GROUPID=$(id -g)
+DISTRO=$(get_distro)
+#SCRIPTPATH="$(get_scriptpath)"
+#MODULES=($(ls $SCRIPTPATH/modules/*.sh))
+if [ ! $DEBUG -eq 1 ]; then
+  DEBUG=${CONFIG[debug_enabled]}
+fi
+if [ -z $LOGFILE ]; then
+  LOGFILE=${CONFIG[logfile]}
+fi
+if [ ! $INTERACTIVE -eq 0 ]; then
+  if amitty; then
+    INTERACTIVE=1
+  fi
+fi
+
+# create logfile if missing
+if [ "$LOGFILE" -a ! -w "$LOGFILE" ]; then
+  if [ ! -d $(dirname "$LOGFILE") ]; then
+    mkdir -p $(dirname "$LOGFILE")
+  fi
+  touch "$LOGFILE"
+fi
+
+# create configfile if missing
+if [ ! -w $CONFIGFILE ]; then
+  if [ ! -d $(dirname $CONFIGFILE) ]; then
+    mkdir -p $(dirname $CONFIGFILE)
+  fi
+  # write config values (to $CONFIGFILE)
+  library_log info "Creating new config file [$CONFIGFILE]"
+  if ! config_write "$CONFIGFILE"; then
+    library_log warning "Could not write to config file [$CONFIGFILE]"
+  fi
+fi
+
+# change file permissions if wrong
+#TODO: check return code
+set_fs_permissions 600 "$CONFIGFILE"
+set_fs_permissions 644 "$LOGFILE"
+
+# loading libraries
+#for LIBRARY in ${LIBRARIES[@]}; do
+#  if [ -r $SCRIPTPATH/$LIBRARY ]; then
+#    source $SCRIPTPATH/$LIBRARY
+#    if [ $DEBUG -eq 1 ]; then
+#      echo "[debug] Library loaded [$LIBRARY]"
+#    fi
+#  else
+#    echo "[error] Library not found [$LIBRARY]"
+#    exit 1
+#  fi
+#done
+
+# log start of main script
+library_log debug "*****  START  *****"
+
+if [ $INTERACTIVE -eq 1 ]; then
+  # run text ui
+  while true; do
+    # Main menu
+    header
+    content "1) System status" \
+            "2) Configuration" \
+            "3) Maintenance" \
+            "" \
+            "4) Reboot" \
+            "5) Shutdown" \
+            "6) Exit to shell"
+    case $(prompt) in
+      1)
+        header
+        echo "Not yet implemented"; sleep 1
+        ;;
+      2)
+        while true; do
+          # Configuration submenu
+          header
+          content "1) Users" \
+                  "2) Install admin utilities" \
+                  "" \
+                  "*) Return to main menu"
+          case $(prompt) in
+            1)
+              header
+              echo "Not yet implemented"; sleep 1
+              ;;
+            2)
+              header
+              echo "Not yet implemented"; sleep 1
+              ;;
+            *)
+              break
+              ;;
+          esac
+        done
+        ;;
+      3)
+        while true; do
+          # Maintenance submenu
+          header
+          content "1) System updates" \
+                  "2) Backup" \
+                  "3) Update this script" \
+                  "" \
+                  "*) Return to main menu"
+          case $(prompt) in
+            1)
+              #update system packages
+              makemeasandwich
+              if [ $? -eq 0 ]; then
+                clear; header; sudo apt update && sudo apt dist-upgrade -y && sudo apt autoremove -y && sudo apt autoclean -y
+                clear; header; echo "System is up-to-date"; sleep 1
+              fi
+              ;;
+            2)
+              header
+              echo "Not yet implemented"; sleep 1
+              ;;
+            3)
+              # Update this script submenu
+              header
+              #TODO: check for new version
+              if false; then #this should run the check
+                content "A new version of sconfig is available." \
+                        "Do you want to update?" \
+                        "" \
+                        "1) Yes" \
+                        "2) No"
+                if [ $(prompt) -eq 1 ]; then
+                    #run self update
+                    header
+                    echo "Update not yet implemented"; sleep 1
+                fi
+              else
+                header
+                echo "You are already up-to-date."; sleep 1
+              fi
+              ;;
+            *)
+              break
+              ;;
+          esac
+        done
+        ;;
+      4)
+        # Reboot submenu
+        header
+        content "1) Yes, i really want to reboot." \
+                "*) Get me out of here!"
+        case $(prompt) in
+          1)
+            #reboot server
+            header
+            echo "Rebooting server"; sleep 1
+            shutdown -r now
+            ;;
+          *)
+            continue
+            ;;
+        esac
+        ;;
+      5)
+        # Shutdown submenu
+        header
+        content "1) Yes, i really want to shutdown." \
+                "*) Get me out of here!"
+        case $(prompt) in
+          1)
+            #shutdown server
+            header
+            echo "Shutting down server"; sleep 1
+            shutdown -h now
+            ;;
+          *)
+            continue
+            ;;
+        esac
+        ;;
+      6)
+        header
+        echo "Dropping to shell"; sleep 1
+        clear; break
+        ;;
+    esac
+  done
+else
+  # run scheduled tasks
+  library_log info "Running scheduled tasks"
+  update_package_repos
+fi
+
+# ***** END *****
+library_log debug "*****  END  *****"
 exit 0