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...
}

# Group for all taler exchange users.
if ! getent group libeufin-bank >/dev/null; then
  groupadd libeufin-bank \
    --system \
    || true
fi

if ! getent passwd libeufin-bank >/dev/null; then
  useradd libeufin-bank \
    --comment 'Talers pseudo bank' \
    --gid libeufin-bank \
    --system \
    --home-dir /var/lib/libeufin-bank \
    || true
fi

config etc/httpd/sites-available/libeufin-bank.conf.new
config etc/libeufin/libeufin-bank.conf.new
config etc/libeufin/settings.json.new
config etc/rc.d/rc.libeufin-bank.new