Linux Programming Tutorials, Guides & Best Practices

This makes the server send a keep-alive packet every 60 seconds, allowing up to 3 missed replies before disconnecting.

Restart SSH:

If successful, you'll see:

Query OK, 0 rows affected

Then reload AppArmor:

sudo apparmor_parser -r /etc/apparmor.d/usr.sbin.mysqld

sudo ubuntu-drivers devices

You’ll see a list like:

• List installed packages:

  dpkg --list