To Nha Notes | Jan. 27, 2021, 2:08 p.m.
ps ax -o pid,size,%cpu,%mem,command | sort -b -k4 -r | head -n 20 | awk '{print "PID:" $1 " " $2/1024 "MB cpu " $3 "% mem "$4 "% " $5}'
free -t | awk 'NR == 2 {print "Current Memory Utilization is : " $3/$2*100}'