#!/bin/sh
setglobal BZIP = '/usr/local/bin/bzip2'
setglobal RM = '"rm -f'"
setglobal MV = '"mv -f'"

if test $Argc -ne 2
{	echo "Usage: $0 <log> <keep>"
	exit 1
}

if test ! -f $1
{	 exit 1
}

if test ! -x $BZIP
{	exit 1
}

if test $2 -le 0
{	echo "Keep at least 1 copy please."
	exit 1
}

setglobal k = $2
$RM "$1.$k" 2>/dev/null || exit 1
while [ "$k" -ge 2 ]
{	setglobal prev = $[expr $k - 1]
	$MV $1.$prev.bz2 $1.$k.bz2 2>/dev/null 
	setglobal k = $prev
}
$BZIP -c $1 >$1.1.bz2 && : >$1