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

Blankman
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4 Answers4

23

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

user9517
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  • Much simpler :) – Mircea Vutcovici Dec 23 '11 at 23:04
  • I was struggling to figure out how to find the process list for multiple process names till I saw how you did it. – user9517 Dec 23 '11 at 23:08
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    A note to future viewers - this method may not give you the data you are expecting. a) this method shows only processes running when top is *started*. Top's normal behavior is to show processes new since it began. b) the top manual I read says -p is limited to 20 process ids. see : http://stackoverflow.com/questions/12075591/top-c-command-in-linux-to-filter-processes-listed-based-on-processname – MaasSql Dec 01 '16 at 17:09
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    After running top -c , hit o and write a filter on a column, e.g. to show rows where COMMAND column contains the string foo, write COMMAND=foo – MaasSql Dec 01 '16 at 17:18
6

Not quite what you're looking for, but sometimes a process is run by it's own user, like apache2 is often run by user www-data.

You can use that to limit top's output to only the processes by that user, effectively only showing apache2 processes by using this command:

top -u www-data
DanMan
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5

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.
Community
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Sergey
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4

Try this:

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