add convert pdf script

convert_pdf.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/bash
+set -e
+
+for i in 2025*.jpg;
+do
+    pdfname=$(echo $i|sed 's/jpg$/pdf/') 
+    gs \
+        -q \
+        -dNOSAFER \
+        -sPAPERSIZE=a4 \
+        -dNOPAUSE \
+        -dPDFSETTINGS=/printer \
+        -dBATCH \
+        -dCompressFonts=true \
+        -sDEVICE=pdfwrite \
+        -sOutputFile=$pdfname \
+        /usr/share/ghostscript/lib/viewjpeg.ps \
+        -c \
+        \($i\) viewJPEG showpage
+done;