pg_updatedicts man page
pg_updatedicts — build PostgreSQL dictionaries from myspell/hunspell ones
pg_updatedicts makes dictionaries and affix files from installed myspell and hunspell dictionary packages available to PostgreSQL for usage with tsearch and word stem support. In particular, it takes all *.dic and *.aff files from /usr/share/myspell/dicts/, converts them to UTF-8, puts them into /var/cache/postgresql/dicts/ with *.dict and *.affix suffixes, and symlinks them into /usr/share/postgresql/version/tsearch_data/, where PostgreSQL looks for them.
Through postgresql-common's dpkg trigger, this program is automatically run whenever a myspell or hunspell dictionary package is installed or upgraded.
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