PREUN

/bin/sh

if [[ "$1" = "0" ]]; then
  perl -ni -e "/^DICT\s*sw\s*TZ\s*sw_TZ$/ or print" /usr/share/dict/ooo/dictionary.lst
fi

POSTIN

/bin/sh

if [[ ! -f "/usr/share/dict/ooo/dictionary.lst" ]] ||       ! grep -q "^DICT[ \t]*sw[ \t]*TZ[ \t]*sw_TZ" /usr/share/dict/ooo/dictionary.lst
then
  echo "DICT sw TZ sw_TZ" >> /usr/share/dict/ooo/dictionary.lst
fi