What is this error?

["mr leokenzie" <tenminustwo () hotmail com>]

Initializing rule chains...
ERROR: Unable to open rules file: /etc/snort.conf or /etc//etc/snort.conf
Fatal Error, Quitting..

I got this error when i tried to run this command
snort -A fast -d -i eth0 -c /etc/snort.conf
What is this error?
How can I test my rules to see whether it is working or not?

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