# PostgreSQL Keys UserParameter=psql.version,/usr/bin/psql --version | head -n 1 UserParameter=psql.size,/usr/bin/psql -t -c "select sum(pg_database_size(datid)) as total_size from pg_stat_database" UserParameter=psql.stat[*],/usr/bin/psql -t -c "select sum($1) from pg_stat_database"