error message programming linux 17.3 rosa

Hi all
I got this laptop with linux mint 17.3 rosa instalation. I installed IDE and tried to write to chip but get this message, sorry very new to arduino on linux

avrdude; ser_open(); cant open device "/dev/ttyACM5" Permission denied
ioctl (TICMGET"): Inappropriat ioctl for device
Problem uploading to board
txs
john