    /var/log/messages : General message and system related stuff
    /var/log/auth.log : Authenication logs
    /var/log/kern.log : Kernel logs
    /var/log/cron.log : Crond logs (cron job)
    /var/log/maillog : Mail server logs
    /var/log/qmail/ : Qmail log directory (more files inside this directory)
    /var/log/httpd/ : Apache access and error logs directory
    /var/log/lighttpd/ : Lighttpd access and error logs directory
    /var/log/boot.log : System boot log
    /var/log/mysqld.log : MySQL database server log file
    /var/log/secure or /var/log/auth.log : Authentication log
    /var/log/utmp or /var/log/wtmp : Login records file
    /var/log/yum.log : Yum command log file.
