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#!/bin/rc
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if(! c: || ! test -f /n/c:/boot.ini) {
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	echo 'Could not find NT''s boot.ini on the first FAT disk.'
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	exit bad
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}
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if(test -f /n/c:/boot.p9) {
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	echo 'A Plan 9 backup already exists; will not edit boot.ini again.'
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	exit bad
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}
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if(! cp /n/c:/boot.ini /n/c:/boot.p9) {
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	echo 'Could not back up boot.ini; will not continue.'
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	exit bad
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}
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chmod +w /n/c:/boot.ini
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if(! grep -si '\[operating systems\]' /n/c:/boot.ini) {
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	echo 'Could not parse boot.ini.'
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	exit bad
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}
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if(grep -si 'Plan 9' /n/c:/boot.ini) {
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	p9file=`{grep 'Plan 9' /n/c:/boot.ini | sed 1q | sed 's/=.*//'}
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	if(! ~ $p9file [Cc]:'\'*) {
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		echo 'Unexpected Plan 9 entry in boot.ini already; not continuing.'
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		exit bad
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	}
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}
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if not {
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	p9file='c:\bootsect.p9'
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	echo 'c:\bootsect.p9 = "Plan 9 from Bell Labs"
' >>/n/c:/boot.ini
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}
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	echo 'Plan 9 added to Windows NT boot menu.'
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	exit ''
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}
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exit bad
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