syslog.conf
 

I want to log all of my sudo messages into a sudolog, say in /var/log/sudolog. How could I alter syslog to do that?

from my centos box:

# The authpriv file has restricted access.
authpriv.* /var/log/secure

this catches all sudo based commands.

just dug this up in man sudoers:

Defaults logfile=/var/log/sudolog