config() {
  NEW="$1"
  OLD="$(dirname $NEW)/$(basename $NEW .new)"
  # If there's no config file by that name, mv it over:
  if [ ! -r $OLD ]; then
    mv $NEW $OLD
  elif [ "$(cat $OLD | md5sum)" = "$(cat $NEW | md5sum)" ]; then
    # toss the redundant copy
    rm $NEW
  fi
  # Otherwise, we leave the .new copy for the admin to consider...
}

# Leave any new rc.font with the same permissions as the old one:
# This is a kludge, but it's because there's no --reference option
# on busybox's 'chmod':
if [ -e etc/rc.d/rc.font ]; then
  if [ -x etc/rc.d/rc.font ]; then
    chmod 755 etc/rc.d/rc.font.new
  else
    chmod 644 etc/rc.d/rc.font.new
  fi
fi
# Then config() it:
config etc/rc.d/rc.font.new

config etc/pam.d/vlock.new