This post shows exactly how to do, we will make use of a webserver and a php script to do the task but I guess you could do it through command line as well.
<?php # Connect mysql_connect('localhost', 'root', 'pass') or die('Could not connect: ' . mysql_error()); # Choose a database mysql_select_db('my_db') or die('Could not select database'); $sql = "SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'my_db' AND ENGINE <> 'InnoDB'"; $rs = mysql_query($sql); while($row = mysql_fetch_array($rs)) { $tbl = $row[0]; $sql = "ALTER TABLE $tbl ENGINE=INNODB"; mysql_query($sql); } ?>