Permission denied on /dev/ttyACM0

First time programming in Arduino (or any micro-controller) .. using Linux distro .. Manjaro KDE.. Arduino 1.8.3 ... IC Atmega328P .. on Uno board. My error message : Arduino: 1.8.3 (Linux), Board: "Arduino/Genuino Uno" Sketch uses 710 bytes (2%) of program storage space. Maximum is 32256 bytes…