# Disable autoboot for all CT
sed -i -e "s/^onboot: 1/onboot: 0/g" /etc/pve/lxc/*.conf ; 
# Disable autoboot for all VM
sed -i -e "s/^onboot: 1/onboot: 0/g" /etc/pve/qemu-server/*.conf

# Enable autoboot for all CT
sed -i -e "s/^onboot: 0/onboot: 1/g" /etc/pve/lxc/*.conf ; 
# Enable autoboot for all VM
sed -i -e "s/^onboot: 0/onboot: 1/g" /etc/pve/qemu-server/*.conf