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macosbashshellps

How to get rid of the headers in a ps command in Mac OS X ?

I use a specific ps command namely 

ps -p <pid> -o %cpu, %mem

which gives me a result like

 %CPU %MEM
 15.1 10.0

All i want to do is to just print these numbers like 15.1 and 10.0 without the headers. I tried to use the 'cut' . But it seems to work on every line.

i.e 

echo "$(ps -p 747 -o %cpu,%mem)" | cut -c 1-5

gives something like

 %CPU
  8.0

How to get just the numbers without the headers ?

Solution

  • Using awk:

    ps -p 747 -o %cpu,%mem | awk 'NR>1'

    Using sed:

    ps -p 747 -o %cpu,%mem | sed 1d