diff -up ./scripts/pdfbook2/pdfbook2.py3 ./scripts/pdfbook2/pdfbook2
--- ./scripts/pdfbook2/pdfbook2.py3	2020-01-10 08:49:13.071743210 -0500
+++ ./scripts/pdfbook2/pdfbook2	2020-01-10 08:50:18.938615714 -0500
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python3
 """ pdfbook2 - transform pdf files to booklets
                    
     This program is free software: you can redistribute it and/or modify
@@ -29,15 +29,15 @@ import shutil
 
 def booklify( name, opts ):
     #------------------------------------------------------ Check if file exists
-    print "\nProcessing", name
+    print("\nProcessing", name)
     if not os.path.isfile( name ):
-        print "SKIP: file not found."
+        print("SKIP: file not found.")
         return
-    print "Getting bounds...",
+    print("Getting bounds...", end=' ')
     sys.stdout.flush()
 
     #---------------------------------------------------------- useful constants
-    bboxName = "%%HiResBoundingBox:"
+    bboxName = b"%%HiResBoundingBox:"
     tmpFile = ".crop-tmp.pdf"
 
     #------------------------------------------------- find min/max bounding box
@@ -50,8 +50,8 @@ def booklify( name, opts ):
         p.wait()
         out, err = p.communicate()
         if len( err ) != 0:
-            print err
-            print "\n\nABORT: Problem getting bounds"
+            print(err)
+            print("\n\nABORT: Problem getting bounds")
             sys.exit( 1 )
         lines = out.splitlines()
         bboxes = [s[len( bboxName ) + 1:] for s in lines if s.startswith( bboxName )]
@@ -69,11 +69,11 @@ def booklify( name, opts ):
         minLOdd -= maxWidth - widthOdd
         maxREven += maxWidth - widthEven
 
-        print "done"
+        print("done")
         sys.stdout.flush()
 
     #--------------------------------------------- crop file to area of interest
-        print "cropping...",
+        print("cropping...", end=' ')
         sys.stdout.flush()
         p = subprocess.Popen( ["pdfcrop",
                                "--bbox-odd", "{L} {T} {R} {B}".format( L = minLOdd - opts.innerMargin / 2,
@@ -92,16 +92,16 @@ def booklify( name, opts ):
         p.wait()
         out, err = p.communicate()
         if len( err ) != 0:
-            print err
-            print "\n\nABORT: Problem with cropping"
+            print(err)
+            print("\n\nABORT: Problem with cropping")
             sys.exit( 1 )
-        print "done"
+        print("done")
         sys.stdout.flush()
     else:
         shutil.copy( name, tmpFile )
 
     #-------------------------------------------------------- create the booklet
-    print "create booklet...",
+    print("create booklet...", end=' ')
     sys.stdout.flush()
     pdfJamCallList = [ "pdfjam",
                        "--booklet", "true",
@@ -124,7 +124,7 @@ def booklify( name, opts ):
         p.wait()
         out, err = p.communicate()
         if len( out ) == 0:
-            print "\n\nABORT: The everyshi.sty latex package is needed for short-edge."
+            print("\n\nABORT: The everyshi.sty latex package is needed for short-edge.")
             sys.exit( 1 )
         else:
             pdfJamCallList.append( "--preamble" )
@@ -139,7 +139,7 @@ def booklify( name, opts ):
     #-------------------------------------------- move file and remove temp file
     os.rename( tmpFile[:-4] + "-book.pdf", name[:-4] + "-book.pdf" )
     os.remove( tmpFile )
-    print "done"
+    print("done")
     sys.stdout.flush()
 
 
@@ -228,7 +228,7 @@ if __name__ == "__main__":
     if len( args ) == 0:
         parser.print_version()
         parser.print_help()
-        print ""
+        print("")
         sys.exit( 2 )
 
     #------------------------------------------- run for each provided file name