how to check RAM used by each process

============ RAM used by each process ============

ps axo rss,comm,pid \

| awk '{ proc_list[$2]++; proc_list[$2 "," 1] += $1; } \

END { for (proc in proc_list) { printf("%d\t%s\n", \

proc_list[proc "," 1],proc); }}' | sort -n | tail -n 10 | sort -rn \

| awk '{$1/=1024;printf "%.0fMB\t",$1}{print $2}'