diff --git a/modules/01-system-settings.sh b/modules/01-system-settings.sh
new file mode 100755
index 0000000..2b8dc48
--- /dev/null
+++ b/modules/01-system-settings.sh
@@ -0,0 +1,112 @@
+#!/usr/bin/env zsh
+# vi: ft=zsh
+
+function checkPrerequisites() {
+  local -A cmds=(
+    [docopts]='(with -f option supported)'
+    [osascript]=''
+    [scutil]=''
+    [systemsetup]=''
+    [nvram]=''
+    [pmset]=''
+    [defaults]=''
+    [launchctl]=''
+  )
+  test "`id -u`" -eq 0 || { lop error 'This module requires root access. Please run as root.'; return 11 }
+  checkCommands
+}
+
+function main() {
+  autoloadZShLib || return
+  checkPrerequisites || return
+  eval "`docopts -f -V - -h - : "$@" <<- USAGE
+	Usage:
+    $0 show-questions
+    $0 [-v] [-d FILE] --hostname NAME --timezone ZONE
+
+	Set energy, basic network and host preferences.
+	
+	Options:
+	  --hostname NAME  Set NAME as current host's host name.
+	  --timezone ZONE  Set ZONE as current host's timezone [default: Europe/Berlin].
+	  -d FILE, --logfile FILE  Print log message to logfile instead of stdout.
+	  -v, --verbose            Be more verbose.
+	----
+	$0 0.1.0
+	Copyright (C) 2022 Rezart Qelibari, Astzweig GmbH & Co. KG
+	License EUPL-1.2. There is NO WARRANTY, to the extent permitted by law.
+	USAGE`"
+  [ $# -eq 0 ] && return
+  configureLogging
+  if [ "${show_questions}" = true ]; then
+    local timezones="`systemsetup -listtimezones | tail -n +2 | awk '{print $1}' | paste -sd, -`"
+    hio info 'i: hostname=What shall the hostname of this host be?' 
+    hio info 's: timezone=What shall the timezone of this host be? # choose from:'"${timezones};"
+    return
+  fi
+  
+  lop debug 'Quitting System Preferences App'
+  osascript -e 'tell application "System Preferences" to quit'
+  
+  lop info 'Configuring computer hostname.' debug "Current hostname: `scutil --get ComputerName`"
+  if [[ "`scutil --get ComputerName`" != "${hostname}" ]]; then
+    lop debug 'Hostname of computer has not been set.' debug "Current hostname: `scutil --get ComputerName`"
+  
+    scutil --set ComputerName "${hostname}"
+    scutil --set HostName "${hostname}"
+    systemsetup -setcomputername "${hostname}" > /dev/null 2>&1
+    systemsetup -setlocalsubnetname "${hostname}" > /dev/null 2>&1
+  else
+    lop debug 'Hostname of computer seems to have already been set. Skipping.' debug "Hostname: `scutil --get ComputerName`"
+  fi
+  
+  lop -n info 'Configuring systemsetup and nvram...'
+  # Disable the sound effects on boot
+  nvram SystemAudioVolume=" "
+  
+  systemsetup -settimezone "${timezone}" >&! /dev/null
+  systemsetup -setusingnetworktime on >&! /dev/null
+  systemsetup -setnetworktimeserver 'time.apple.com' >&! /dev/null
+  systemsetup -setsleep never >&! /dev/null
+  systemsetup -setwakeonnetworkaccess off >&! /dev/null
+  systemsetup -setrestartfreeze on >&! /dev/null
+  systemsetup -f -setremotelogin off >&! /dev/null
+  systemsetup -setremoteappleevents off >&! /dev/null
+  lop success 'done'
+  
+  # ==
+  lop -n info 'Configuring power management...'
+  cmd=(pmset -a)
+  ${cmd} displaysleep 0
+  ${cmd} disksleep 0
+  ${cmd} sleep 0
+  ${cmd} womp 0
+  ${cmd} acwake 0
+  ${cmd} proximitywake 0
+  ${cmd} destroyfvkeyonstandby 1 > /dev/null
+  pmset -b acwake 1
+  ${cmd} lidwake 1
+  ${cmd} halfdim 1
+  ${cmd} powernap 1
+  ${cmd} hibernatemode 0
+  lop success 'done'
+  
+  # ==
+  lop -n info 'Configuring login window...'
+  cmd=(defaults write '/Library/Preferences/com.apple.loginwindow')
+  ${cmd} DisableFDEAutoLogin -bool true
+  ${cmd} SHOWFULLNAME -bool false
+  ${cmd} AdminHostInfo -string HostName
+  ${cmd} GuestEnabled -bool false
+  lop success 'done'
+  
+  # ==
+  lop info 'Configuring global umask'
+  launchctl config user umask 027
+}
+
+if [[ "${ZSH_EVAL_CONTEXT}" == toplevel ]]; then
+  test -f "${ASTZWEIG_MACOS_SYSTEM_LIB}" || { echo 'This module requires macos-system library. Please run again with macos-system library provieded as a path in ASTZWEIG_MACOS_SYSTEM_LIB env variable.'; return 10 }
+  source "${ASTZWEIG_MACOS_SYSTEM_LIB}"
+  main "$@"
+fi