Top: filter separator disabled

Question

I try to filter the top output with a command, but when I type O , then

 COMMAND?apache2 

I get the following error:

 'include' filter delimiter is missing 

I looked at the top page of the manual, but I can not understand what is happening.

Answer 1

Your filter should be COMMAND=apache . For more information, see section 5e of the top man page, especially the "Input Requirements" bit.