Found how how much memory in kB $PID is occupying in Linux

echo 0$(awk '/Pss/ {printf "+"$2}' /proc/$PID/smaps)|bc
The "proportional set size" is probably the closest representation of how much active memory a process is using in the Linux virtual memory stack. This number should also closely represent the %mem found in ps(1), htop(1), and other utilities.
Sample Output
92327

5
By: atoponce
2013-09-26 18:20:22

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Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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