Thanks for all those would responded, plenty of advice there...
The reason I wanted a bash, script was just for a very quick and nasty
solution to check the files the 'file *' solution work very nicely, and on a
closer look it lead me to the 'magic' file, which had a good description of
what defines what a good postscript header looks like. As it happens, in the
long run I'll write something in Java, as it's for a web based app. and has
a java element anyway.
Below is the definition in the magic file... man file will give you the
knowledge to read it.
Thanks all
Justin
# PostScript, updated by Daniel Quinlan (quinlan at yggdrasil.com)
0 string %! PostScript document text
>2 string PS-Adobe- conforming
>>11 string >\0 at level %.3s
>>>15 string EPS - type %s
>>>15 string Query - type %s
>>>15 string ExitServer - type %s
# Some PCs have the annoying habit of adding a ^D as a document separator
0 string \004%! PostScript document text
>3 string PS-Adobe- conforming
>>12 string >\0 at level %.3s
>>>16 string EPS - type %s
>>>16 string Query - type %s
>>>16 string ExitServer - type %s
0 string \033%-12345X%!PS PostScript document
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