[OS X TeX] [bash] Pdfoutput=0 at the beginning of a file

[Alain Matthes]

Hello

I' m a beginner with bash but i would like to modify a script and a  
file foo.tex.
I would like to put pdfoutput=0 at the beginning of the file foo.tex.

My first idea is to put pdfoutput=0 in a new file "tempfile"

echo pdfoutput=0 > tempfile then cat tempfile foo.tex > newfoo.tex

Is it correct ? The problem : i need to test the existence of  
tempfile and newfoo.tex.

Perhaps there is a solution to add an a expression at the beginning  
of a file


Thanks Alain Matthes
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