Because I am unable to start the mysql daemon, I have edited my my.cnf files so that innodb_force_recover=6.
Now I am able to start the mysql daemon. I guess the data are corrupt somewhere so I am planning a backup and reinstallation and restore.
However, when I ran mysqldump or mysqlcheck to assist me in this, nothing happens. I execute each of the command, and no output was given to stdout nor stderr.
Exit statuses (as from $?) are 0.
Why, and how can I solve this?