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get_freespace()
##############
 PRE : $1 is the name of the directory to check for disk space.
 POST: echos free disk space used by parent of $1
 OVERWRITES: JUNK
{
    if [ "_$1" = "_" ]; then
    	echo "0"
    fi

    JUNK="`get_parent "$1"`"

    case "$OS_NAME" in 
    	SunOS )
	    $DF -bk "$JUNK" |sed 1d |tr -s ' ' | cut -d" " -f,4
	    ;;

	Darwin )
            $DF -k "$JUNK" | tail -1 | tr -s ' ' | cut -d" " -f 4
	    ;;

	Linux )
	    $DF -kP "$JUNK" | sed 1d | tr -s ' ' | cut -d" " -f,4
	    ;;

	HP-UX )
	    $DF -b "$JUNK" | tr -s ' ' | cut -d" " -f,5
	    ;;

    	AIX )
            $DF -k "$JUNK" | sed 1d | tr -s ' ' | cut -d" " -f,3
	    ;;

        OSF1 )
            $DF -k "$JUNK" | sed 1d | tr -s ' ' | cut -d" " -f,4
            ;;

        *)  
	    echo "${ERR_OS_UNSUPPORTED}"
            exit 1
    esac
}