diff --git a/bin/ai/regression/completeness.sh b/bin/ai/regression/completeness.sh
old mode 100644
new mode 100755
--- a/bin/ai/regression/completeness.sh
+++ b/bin/ai/regression/completeness.sh
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+# $Id$
+
 if ! [ -f ai/regression/regression.nut ]; then
 	echo "Make sure you are in the root of OpenTTD before starting this script."
 	exit 1
diff --git a/bin/ai/regression/regression.nut b/bin/ai/regression/regression.nut
--- a/bin/ai/regression/regression.nut
+++ b/bin/ai/regression/regression.nut
@@ -1,3 +1,5 @@
+/* $Id$ */
+
 import("queue.priority_queue", "PQ", 2);
 import("queue.binary_heap", "BH", 1);
 import("queue.fibonacci_heap", "FH", 1);
diff --git a/bin/ai/regression/regression_info.nut b/bin/ai/regression/regression_info.nut
--- a/bin/ai/regression/regression_info.nut
+++ b/bin/ai/regression/regression_info.nut
@@ -1,3 +1,5 @@
+/* $Id$ */
+
 class Regression extends AIInfo {
 	function GetAuthor()      { return "OpenTTD NoAI Developers Team"; }
 	function GetName()        { return "Regression"; }
diff --git a/bin/ai/regression/require.nut b/bin/ai/regression/require.nut
--- a/bin/ai/regression/require.nut
+++ b/bin/ai/regression/require.nut
@@ -1,3 +1,4 @@
+/* $Id$ */
 
 print("  Required this file");
 
diff --git a/bin/ai/regression/run.sh b/bin/ai/regression/run.sh
old mode 100644
new mode 100755
--- a/bin/ai/regression/run.sh
+++ b/bin/ai/regression/run.sh
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+# $Id$
+
 if ! [ -f ai/regression/regression.nut ]; then
 	echo "Make sure you are in the root of OpenTTD before starting this script."
 	exit 1
diff --git a/findversion.sh b/findversion.sh
--- a/findversion.sh
+++ b/findversion.sh
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+# $Id$
+
 # Arguments given? Show help text.
 if [ "$#" != "0" ]; then
 	cat <<EOF
diff --git a/os/dos/make_dos_binary_selfcontained.sh b/os/dos/make_dos_binary_selfcontained.sh
--- a/os/dos/make_dos_binary_selfcontained.sh
+++ b/os/dos/make_dos_binary_selfcontained.sh
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+# $Id$
+
 cd `dirname $0`
 cc -o exe2coff exe2coff.c || exit
 cp $1 binary.exe || exit
diff --git a/os/macosx/plistgen.sh b/os/macosx/plistgen.sh
--- a/os/macosx/plistgen.sh
+++ b/os/macosx/plistgen.sh
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+# $Id$
+
 # sets VERSION to the value if RELEASE if there are any,
 # otherwise it sets VERSION to revision number
 if [ "$3" ]; then
diff --git a/src/ai/api/squirrel_export.sh b/src/ai/api/squirrel_export.sh
old mode 100644
new mode 100755
diff --git a/svnup.sh b/svnup.sh
--- a/svnup.sh
+++ b/svnup.sh
@@ -1,4 +1,7 @@
 #!/bin/sh
+
+# $Id$
+
 # This script updates the svn source and displays log changes
 # This is only useful for users of CLI based SVN clients
 # Written by Bjarni