Added a script for checking if needed systemd units are installed in the system.

check-requirements.sh

+#!/usr/bin/env bash
+
+################################################################################
+# Check if all required systemd units are installed in the system
+################################################################################
+
+UNITS=(
+abrtd.service
+accounts-daemon.service
+basic.target
+display-manager.service
+getty.target
+graphical.target
+kdm.service
+multi-user.target
+network-online.target
+network.target
+rescue.service
+rescue.target
+rtkit-daemon.service
+sshd.service
+switcheroo-control.service
+systemd-update-utmp-runlevel.service
+udisks2.service
+usbguard.service
+)
+
+CHECK_DIRS=(
+/etc/systemd
+/usr/lib/systemd
+)
+
+UNITS_LEN=${#UNITS[@]}
+
+# DON'T TOUCH UNDER THIS LINE! #################################################
+
+echo
+
+units_found=0
+for f in "${UNITS[@]}"
+  do
+  found=0
+  for d in "${CHECK_DIRS[@]}"
+    do
+    if [[ $found == 0 ]];
+    then
+      cd $d
+      lines=$(find . -name $f | wc -l)
+      if [[ $lines != 0 ]]
+      then
+          found=1
+          units_found=$((units_found+1))
+      fi
+    fi
+  done
+  if [[ $found == 0 ]];
+  then
+    echo "Missing: $f"
+  fi
+done
+
+echo
+echo "Summary:"
+echo "  - # units to check: $UNITS_LEN"
+echo "  - # units found: $units_found"