1, CPU usage
use top, w or vmstat
2, memory usage
top or free
3, disk I/0
vmstat 1 5
4, number of tcp connections
netstat -an | wc -l
Wake up on Lan (WOL) from Linux
I was looking for software to do Wake up on Lan from Linux and this is one of solutions.
get source code form Wake-On-Lan
and compile on your machine.
[root@ns99 ~]# gcc -o wol wol.c
Usage: wol <IP> <MAC>
or
Usage: wol <broadcast IP> <MAC>