title: In bash, show a list with: process cpu time, nice priority and custom command. in different columns
body: <p>The custom comand is: the calculation of the relation between resident memory and the need of exchange memory necessary to store the process in case of suspending it and the owner of the process.<br>
  I know <code>ps -eo cputime,nice</code> but I want another column with my custom calculation  and I dont know how.</p>
  
  <p>P.D. And if I want to add in my script: <code>-nice a b</code>, where it will process only the processes in "a-b" range how it could be.</p>
  
  <p>Thanks.</p>