Trouble downloading scipts

I need help,

I have loaded Linux onto my HP Pavilion and I am trying to upload code to my Arduino Mega. I have followed all the instructions but I keep having trouble. The board worked fine under Windows and shows as connected in IDE software but I cannot up load. I get the following error:

avrdude: ser_open(): can’t open device “/dev/ttyACM0”: Permission denied
ioctl(“TIOCMGET”): Inappropriate ioctl for device
ioctl(“TIOCMGET”): Inappropriate ioctl for device
avrdude: ser_send(): write error: Bad file descriptor
avrdude: stk500_send(): failed to send command to serial port
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: Bad file descriptor
avrdude: stk500_send(): failed to send command to serial port
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: Bad file descriptor
avrdude: stk500_send(): failed to send command to serial port
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: Bad file descriptor
avrdude: stk500_send(): failed to send command to serial port
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: Bad file descriptor
avrdude: stk500_send(): failed to send command to serial port
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: Bad file descriptor
avrdude: stk500_send(): failed to send command to serial port
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating with programmer
the selected serial port avrdude: stk500v2_getsync(): timeout communicating with programmer
does not exist or your board is not connected

I tried to unlock port using :sudo chmod a+rw /dev/ttyACMODD

but it didn’t work.

Douglas lovethecape@hotmail.com

https://www.arduino.cc/en/Guide/Linux