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fshalt: support relative paths to the new kernel

--- a/rc/bin/fshalt

+++ b/rc/bin/fshalt

@@ -14,6 +14,12 @@

 	exit usage

 }

+if(~ $reboot yes && ~ $#* 1){

+	bootf=$1

+	if(! ~ $bootf /*)

+		bootf=`{builtin pwd}^/$bootf

+}

+

 path=(/bin)

 builtin cd /

 bind -c '#s' /srv

@@ -47,8 +53,8 @@

 cp /bin/sleep /tmp

 cp /bin/scram /tmp

 cp /bin/test /tmp

-if(~ $reboot yes && ~ $#* 1){

-	if(! cp $1 /tmp/bootf)

+if(~ $#bootf 1){

+	if(! cp $bootf /tmp/bootf)

 		exit 'failed to copy kernel'

 	bootf=/bin/bootf

 }

-- 

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