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#!/bin/rc
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# desc: move an old third edition plan 9 file system out of the way
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# prereq: mountfs
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rootfiles=(\
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	386\
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	68000\
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	68020\
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	LICENSE\
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	NOTICE\
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	acme\
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	adm\
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	alpha\
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	arm\
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	cron\
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	dist\
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	fd\
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	lib\
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	lp\
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	mail\
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	mips\
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	mnt\
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	n\
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	power\
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	rc\
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	sparc\
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	sys\
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	tmp\
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	usr/glenda\
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	wrap\
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)
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switch($1){
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case checkready
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	if(! test -d /n/kfs/wrap){
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		moveoldfs=done
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		export moveoldfs
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	}
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case go
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	if(test -d /n/kfs/wrap){
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		echo 'You have a Third Edition Plan 9 installation on '^$fs^'.'
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		echo 'We need to move the old file system out of the way (into /3e)'
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		echo 'in order to continue.'
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		echo
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		prompt 'Move old file system' y n
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		switch($rd){
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		case y
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			kname=`{kfsname $fs}
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			log Moving old Plan 9 installation into /3e on kfs
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			logprog disk/kfscmd -n$kname 'create /3e sys sys 555 d' >>[2]/srv/log
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			logprog disk/kfscmd -n$kname 'create /3e/usr sys sys 555 d' >>[2]/srv/log
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			for(i in $rootfiles)
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				if(test -e /n/kfs/$i)
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					logprog disk/kfscmd -n$kname 'rename /'^$i^' /3e/'^$i
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			# copy extant /adm/users in case there have been modifications
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			logprog disk/kfscmd -n$kname 'create /adm adm adm 555 d' >>[2]/srv/log
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			logprog cp /n/kfs/3e/adm/users /n/kfs/adm/users >>[2]/srv/log
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		case n
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			echo 'Okay, but we can''t continue.'
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			echo
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		}
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	}
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case checkdone
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	if(test -d /n/kfs/wrap){
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		moveoldfs=notdone
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		export moveoldfs
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	}
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}