added pdf-shrinker

scripts/shrinkpdf.bash

@@ -0,0 +1,20 @@
+#!/bin/bash
+for i in $@;
+do
+	if [ -f "${i}" ]; then
+		gs \
+			-sDEVICE=pdfwrite \
+			-dCompatibilityLevel=1.4 \
+			-dPDFSETTINGS=/default \
+			-dNOPAUSE -dQUIET -dBATCH \
+			-dColorConverstionStrategy=/sRGB \
+			-dDownsampleColorImages=true \
+			-dDownsampleGrayImages=true \
+			-dDownsampleMonoImages=true \
+			-dOptimize=true \
+			-sOutputFile="${i}" \
+			"${i}_small.pdf"
+	else
+		echo "${i} is not a valid file."
+	fi
+done