Since the script is run with sudo, there is no need for other sudos.

Author: dannystaple

setup_arm.sh

@@ -1,8 +1,8 @@
 #!/bin/env bash -e
 # Raspbian setup
-sudo apt-get update -y 
-sudo apt-get install -y python3-libusb1 python3-pip git
+apt-get update -y 
+apt-get install -y python3-libusb1 python3-pip git
 pip3 install git+https://github.com/orionrobots/python_usb_robot_arm
-sudo cat <<END >/etc/udev/rules.d/42-usb-arm-permissions.rules
+cat <<END >/etc/udev/rules.d/42-usb-arm-permissions.rules
 SUBSYSTEM=="usb", ATTR{idVendor}=="1267", ATTR{idProduct}=="0000", MODE:="0666"
 END