MariaDB starting with 10.4.6
From MariaDB 10.4.6, mariadb-find-rows is a symlink to mysql_find_rows, the tool for reading files containing SQL statements and extracting statements that match a given regular expression or that contain USE db_name or SET statements.
MariaDB starting with 10.5.2
From MariaDB 10.5.2, mariadb-find-rows is the name of the tool, with mysql_find_rows a symlink .
See mysql_find_rows for details.