Hello,

I would like to make one remark. When extracting the information out of the file top.txt, I would not rely on the fixed number for the column (35-39). If something happens like the number for ni(ce) or sy(stem) are taking more room than they do now, the information of your choice may end up in columns 38-43.

I think it's better to take advantage of the patterns present in the file:

 after every column there is a "," :

cat top.txt | grep ^Cpu | cut -d "," -f 4 | cut -d "%" -f 1

 should do the job.

Note futher that I use the ^ sign before Cpu. That's selecting only the lines which start with "Cpu". By omitting this, a line with Cpu somewhere in it is also selected.

Kind regards,

 Stef Bon