gcc-avr 1:5.4.0+Atmel3.6.0-1build1 / usr / bin / avr-gcc-5.4.0

/usr/bin/avr-gcc-5.4.0 is in gcc-avr 1:5.4.0+Atmel3.6.0-1build1.

This file is owned by root:root, with mode 0o755.

It is a symlink to /usr/bin/./usr/bin/avr-gcc