I'm trying to read /dev/ttyUSB0
of another computer mounted via sshfs, however commands such as cat /mnt/tmp1/dev/ttyUSB0
return "Permission denied" (I'm mounting the filesystem to /mnt/tmp1
).
- I've mounted the file system as root
# The machine whos serial port I want to access is called "trogdor"
sudo sshfs -o allow_root -o IdentityFile=$HOME/.ssh/id_rsa root@trogdor:/ /mnt/tmp1/
- I can do other things in the file system as root so I'm pretty sure I have root permissions on the mounted file system.
- When in an ssh session I cat
cat /dev/ttyUSB0
with no problem.