diff --git a/extra/make_sample_sheet.sh b/extra/make_sample_sheet.sh
new file mode 100755
index 0000000..ae89e6e
--- /dev/null
+++ b/extra/make_sample_sheet.sh
@@ -0,0 +1,22 @@
+if [ $# -ne 2 ]; then 
+	echo "USAGE: bash make_sample_sheet.sh [DIRNAME] [OUTFILE]"
+	exit 0 
+fi
+
+
+DIR=$1
+OUTFILE=$2
+
+echo "sample,fastq_1,fastq_2" > $OUTFILE
+
+for f in $DIR/*R1*gz; do
+	file1=`basename $f`
+	name=`echo $file1 | cut -d\. -f1 | cut -d_ -f1` 
+	file2=`echo "$file1" | sed 's/R1/R2/g'`
+	
+	echo $name 
+	echo $file1
+
+	echo "$name,$DIR/$file1,$DIR/$file2" >> $OUTFILE 
+done 
+