Is it possible to filter top to show specific processes?

Question

I'm run top and I want to always see java/tomcat/redis/mysql/mongo, is that possible?

Answer 1

You could to something like this

top -p `pgrep -d ',' "java|tomcat|redis|mysql|mongo"`

This gets pgrep to produce a comma separated list of pid's that are passed to top -p

Answer 2

Check man top manual page for more details about top utility...

Semms you need -p parameter

-p : Monitor PIDs as: -pN1 -pN2 ... or -pN1, N2 [,...]

        Monitor only processes with specified process  IDs.   This  option
        can  be given up to 20 times, or you can provide a comma delimited
        list  with  up  to  20  pids.   Co-mingling  both  approaches   is
        permitted.

Answer 3

Try this:

alias mytop='echo $(sed "s/\([0-9]*\)/-p \1/g;s/^/top /" <(pgrep -d" " "java|redis|mysql|mongo"))'
mytop