sudo mount -t ntfs-3g /dev/sda1 /mnt/usb
sudo rm /var/lib/libvirt/dnsmasq/virbr0.macs
sudo virsh net-start default
systemctl status
systemctl start/stop/restart
systemctl reload
systemctl enable/disable
systemctl list-units --type=service --state=running
systemctl list-dependencies
journalctl -u -f
journalctl -b
journalctl -p 3 -b
journalctl --since "1 hour ago"
df -h
last
journalctl -u sshd -f
journalctl -u sshd | grep "Failed password"
journalctl -u sshd | grep "Accepted"