Create script to enable disable journal logging.
To prevent SD card wearing on RaspberryPi I've decided to take control of journal logging.
start_loging_journal.sh
#!/bin/bash
sed -i '/Storage=none/d' /etc/systemd/journald.conf
systemctl restart systemd-journald
stop_loging_journal.sh
#!/bin/bash
sed -i '/Storage=none/d' /etc/systemd/journald.conf
echo "Storage=none" >> /etc/systemd/journald.conf
systemctl restart systemd-journald