#!/bin/rc
# name: vefs
# usage: vefs patterm
# coded by Kenji Arisawa
# source: http://plan9.aichi-u.ac.jp/netlib/
# last update: 2002/09/04
log=$home/venti/log
if(~ $#* 0)
	a=`{tail -1 $log}
if not
	a=`{grep $"* $log | tail -1}
if(! ~ $#a 4){
	echo '# pattern not exist'
	exit 'pattern not exist'
}
unmount /n/vac >[2] /dev/null
vacfs -h pc <{echo vac:$a(1)}