리눅스 시스템 정보 체크

System Information checking
 - The number of CPU cores (cat /proc/cpuinfo)
 - CPU frequency (cat /proc/cpuinfo)
 - CPU usage (cat /proc/stat)
 - The host's IP (from /proc/net/route)
 - The gate MAC address (cat /proc/net/arp)
 - The amount of RAM (cat /proc/meminfo)
 - The volume of data transmitted and received (cat /proc/net/dev)
 - The OS name and version (uname -a)

참고 : http://news.drweb.com/?i=5801&c=5&lng=en&p=0