diff --git a/include/binaries b/include/binaries
index 89b29b07..33251431 100644
--- a/include/binaries
+++ b/include/binaries
@@ -269,6 +269,28 @@
         LogText "Result: checking of binaries skipped in this mode"
     fi
 
+    # Test if the basic system tools are defined. These will be used during the audit.
+    [ "${AWKBINARY:-}" ] || ExitFatal "awk binary not found"
+    [ "${CUTBINARY:-}" ] || ExitFatal "cut binary not found"
+    [ "${EGREPBINARY:-}" ] || ExitFatal "grep binary not found"
+    [ "${FINDBINARY:-}" ] || ExitFatal "find binary not found"
+    [ "${GREPBINARY:-}" ] || ExitFatal "grep binary not found"
+    [ "${HEADBINARY:-}" ] || ExitFatal "head binary not found"
+    [ "${LSBINARY:-}" ] || ExitFatal "ls binary not found"
+    [ "${PSBINARY:-}" ] || ExitFatal "ps binary not found"
+    [ "${SEDBINARY:-}" ] || ExitFatal "sed binary not found"
+    [ "${SORTBINARY:-}" ] || ExitFatal "sort binary not found"
+    [ "${TRBINARY:-}" ] || ExitFatal "tr binary not found"
+    [ "${UNIQBINARY:-}" ] || ExitFatal "uniq binary not found"
+    [ "${WCBINARY:-}" ] || ExitFatal "wc binary not found"
+
+    # Test a few other tools that we did not specifically define (yet)
+    TOOLS="xxd"
+    for T in ${TOOLS}; do
+        DATA=$(type ${T})
+        if [ $? -gt 0 ]; then ExitFatal "${T} binary not found"; fi
+    done
+
 #
 #================================================================================
 # Lynis - Security Auditing and System Hardening for Linux and UNIX - https://cisofy.com