function _generateNiceCommand
{
local vdir=$1
- local nice
+ local nice=0
+ local current_nice=`$_NICE`
- test -r "$vdir/nice" || return 0;
- read nice <"$vdir"/nice
+ test -r "$vdir/nice" && read nice <"$vdir"/nice
- NICE_CMD=( $_NICE -$nice )
+ let nice=$nice-$current_nice || :
+ NICE_CMD=( $_NICE -n $nice )
}