[ILUG] GhostScript

[David Neary]

Justin MacCarthy wrote:
> Hi,
> 
> Does anyone know [can you / how to ]  check 100's of PDF files with
> ghostscript to make sure they are valid PDFs???

The first four characters of a valid PDF are %PDF. Is that a good
enough check? You may get a rare false negative... if it's good
enough, then this'll do...

#!/bin/sh

for i in $*; do
  
  read -n 4 BUFFER < $i;
  if [ x$BUFFER = 'x%PDF' ]; then
    echo $i looks like it might be a PDF
  fi
done

Dave.

-- 
       David Neary,
    Marseille, France
  E-Mail: bolsh at gimp.org