Logging all query in one seperate File - Mailing list pgsql-performance

Hai all,

          I want to log my queries send to the Postgresql server. I heard that we can do this my specifying the file name in

/etc/rc.d/init.d/Postgresql  initiating file. But I don’t know. If this is the way means how to do that. Or anyother way is there.

Thanks is advance

Raja