Binding device to a driver module
This is very popular situation, the use of shell redirection with sudo to write to root owned file. You can run it as:
sudo sh -c 'echo -n "2-1.2:1.0" > /sys/bus/usb/drivers/cdc_acm/bind'
Which run shell as root and use redirect inside it. There are many other ways, see When using sudo with redirection, I get 'permission denied'