top -l 0 -s 1 -pid XXX -stats rsize | awk 'NR%13==0; fflush(stdout)' > output.txt
to store the rsize value of a process in a file. Currently the contents of output.txt look like this:
3828K+ 3832K+ 3836K+ 3840K+ 3840K 3840K
I would like to modify this one-liner to include timestamp along with the value. How do I modify the awk part of the above one-liner and add timestamp to it? The resultant output should look like this:
1338936728 3828K+ 1338936729 3838K
I'm on a Mac OSX. I would like to make a timestamp Vs rsize plot.