[SOLVED] Mount USB at boot (reboot) and copy file

Dear all,

I am trying to mount a usb immediately after the boot and copy two files on my system.

At the moment I made the folllwing steps:

• creation of the directory /mnt/usb.

• creation the following script startup with the following code for the user "pi"
  sudo mount /dev/sda1 /mnt/usb -o uid=pi,gid=pi
  sudo cp /mnt/usb/interfaces /etc/network/interfaces
  sudo cp /mnt/usb/resolv.conf /etc/resolv.conf
  if [ -f /mnt/usb/interfaces ]; then
  sudo mv /mnt/usb/interfaces /mnt/usb/interfaces.done
  fi
  if [ -f /mnt/usb/resolv.conf ]; then
  sudo mv /mnt/usb/resolv.conf /mnt/usb/resolv.conf.done
  fi
  sudo reboot

• Insetion of the script to the crontab file by adding the following row:
  @reboot /home/pi/startup

The problem is that it does not work.
In the past I made a similar thing on my Raspberry but I cannot find out how to make it.

Note that, of course, we can use different usb stick with the files to be copied on the system.

Thanks.

Silvano