Displays top cpu eaters

ps -eo pcpu,pid,user,args | sort -k 1 -r | head -10

Top Memory Eaters:

ps -auxf | sort -nr -k 4 | head -10

Load Average :

uptime | awk '{print $10}' | sed 's/,//g'

Total No. of Cpus [cores]:

cat /proc/cpuinfo | grep processor | wc -l