This is used to verify existence of required users/groups.
diff --git a/IDcheck.sh b/IDcheck.sh
new file mode 100755
index 0000000..908c1d7
--- /dev/null
+++ b/IDcheck.sh
@@ -0,0 +1,27 @@
+#!/bin/sh
+
+id nobody
+if [ $? -eq "0" ]; then
+ id bin
+ if [ $? -eq "0" ]; then
+ id daemon
+ if [ $? -eq "0" ]; then
+ id -g nobody
+ if [ $? -eq "0" ]; then
+ id -g bin
+ if [ $? -eq "0" ]; then
+ id -g daemon
+ if [ $? -eq "0" ]; then
+ echo "Required users/groups exist."
+ exit 0
+ fi
+ fi
+ fi
+ fi
+ fi
+fi
+echo ""
+echo "************************************************************************"
+echo "* Please check that the required users/groups exist. See INSTALL file. *"
+echo "************************************************************************"
+echo ""