[YLUG] How do to substition in a file with sed or similar

[David Matthews]

On Fri, 27 Oct 2006 12:15:19 +0100
york-request at mailman.lug.org.uk wrote:

> How I do the substition on the file 'in place'?

This demonstrates what you want I think, but don't ask me how. Its from a script I wrote to LilyPond/Musixtex NoteEdit output.
Sed 's a 'mare. I (eventually) get it to do what I want, bung it in a script and run screaming from the room.

#if the TeX file doesn't contain a musicsize instruction, insert one
	if ! grep "musicsize" $FILE > /dev/null; then
		sed '/nobarnumbers/i\\normalmusicsize' $FILE > temp.tex
		mv temp.tex $FILE
	fi

	#substitute musicsize instruction as per command line
	#some versions of sed don't understand * so need two passes
	if grep "normalmusicsize" $FILE > /dev/null; 	then
		sed /normal/s/normalmusicsize/$RP/ $FILE > temp.tex

	else sed /musicsize/s/.....musicsize/$RP/ $FILE > temp.tex
	echo "Temporary TeX file created"
	fi


-- 
David

dmatthews at mailc.net
Public key at hkp://www.keys.eu.pgp.net
and http://pooter.sourceforge.net/dmatthews.asc

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