Create a dummy logfile in /tmp/piaware.out, not a symlink.
Create a dummy logfile in /tmp/piaware.out, not a symlink.

Creating a symlink in /tmp runs afoul of "fs.protected_symlinks"
(see https://stackoverflow.com/questions/26496352/symlink-giving-permission-denied-to-root)

flightaware/piaware,flightaware/piaware