--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pdf_anonymiser.sh	Wed May 07 16:25:00 2014 +0200
@@ -0,0 +1,28 @@
+#!/bin/sh
+#
+# (cc) Peter Gervai, 2011
+# cc-by-sa-3.0
+#
+# remove private info from PDFs
+#
+
+if [ "$1" == "" ]; then
+	echo " "
+	echo "pdf metadata cleaner v1.00 by Peter 'grin' Gervai, 2011"
+	echo " "
+	echo "Usage: $0 filename.pdf"
+	echo " "
+	exit 0
+fi 
+
+T=`mktemp /tmp/pdfanon.XXXXXXXX`
+
+# clean and dump InfoKeys
+pdftk "$1" dump_data |  awk '/InfoValue/ {print $1}; !/InfoValue/ {print }' > $T
+# update empty keys in pdf
+pdftk "$1" update_info $T output "$1_new.pdf"
+mv "$1" "$1.bak"
+mv "$1_new.pdf" "$1"
+echo  "$1.pdf written, old one renamed to $1.bak. Have a nice day!"
+
+rm $T