How to limit number of tty in systemd
<p>If I run <code>systemctl</code> I get a lot of ttys (see above). Is there any way to limit this number and so save some memory because obviously I will not need this bunch of tty never.</p>

<pre><code>sys-devices-virtual-tty-ttya0.device                    loaded active plugged   /sys/devices/virtual/tty/ttya0
[...]
sys-devices-virtual-tty-ttyzf.device                    loaded active plugged   /sys/devices/virtual/tty/ttyzf
</code></pre>