Add support for a filename parameter

Author: rjcorwin

push

@@ -1,5 +1,9 @@
+#! /bin/bash
+
+filename=$1
+
 while read line
 do
   echo "$line"
-  date +"%Y-%m-%d %H:%M:%S" | tr -d "\n" >> output.csv; echo -n "," >> output.csv; echo "$line" >> output.csv;  
-done < "${1:-/dev/stdin}"
+  date +"%Y-%m-%d %H:%M:%S" | tr -d "\n" >> "$filename"; printf "," >> "$filename"; echo "$line" >> "$filename";  
+done < /dev/stdin