Monitor memory fine-grained usage (e.g. firefox)

cat $(echo "ls /proc/{`pidof firefox | sed -e 's/$/,/' -e 's/ /,/g'`}/smaps 2>/dev/null" | bash) | awk '/Rss/{sum += $2; } END{print sum, "KB"}'
I have modified the original one-liner to allow it to manage multiple PIDs. However, I haven't found the way it can work properly with the watch command. NOTE: brace expand must be activated via "set -B" in order to this script can work.
Sample Output
961936 KB

By: pchalim
2015-09-30 22:22:53

1 Alternatives + Submit Alt

What do you think?

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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