Script to get user that has process with most memory usage?

Question

How can I write a script that gives an output of the user that has the process with the most memory usage in the system. The script is sh. I tried to use top command as the

Answer 1

this works in centos: list most memory cost process

[root@182 ~] # ps aux | sort -k 4 -r | head -n2
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root      7048  0.2  9.6 8060236 1573612 ?     Ssl  Dec14   8:23 java -Djava.security.e

sort -k 4 : sort by the forth column, my pc column4 = %MEM

in other linux/unix, you may find the right column number for memory