[tor-relays] Changing ulimit for debian-tor

[Lluís]

The limit to open files is set to 1024 by default in my system.
So it is for the "debian-tor" user, too. It seems to me a bit low.

I tried to rise it a whit through "sudo" and getting a shell for
debian-tor, but it doesn't work.

Can I use PAM-LIMIT with tor ?
If not, how can I set ulimit for debian-tor when booting ?
And when restarting tor ?

BTW, may the open files ulimit preclude a relay to get the
 "guard" flag ?

thanks in advance,

Lluís
Spain