Unix, Xenix and ODT General FAQ

This article is from a FAQ concerning SCO operating systems. While some of the information may be applicable to any OS, or any Unix or Linux OS, it may be specific to SCO Xenix, Open There is lots of Linux, Mac OS X and general Unix info elsewhere on this site: Search this site is the best way to find anything.

How can I monitor cpu usage (Old Sco Unix)?

This script is useful:

        #!/bin/sh
        # @(#)/usr/local/bin/mon, quick & dirty process monitor
        # @(#)Bela Lubkin, June 1997 & December 2000
        # @(#)Bob Stockler, December 2000
        # @(#)Jean-Pierre Radley, December 2000
 
        trap 'echo "$CN\c";trap 0;exit' 0 2 3 15
        trap 'trap 0;exit' 1
        N=`tput lines`
        EL=`tput el` ED=`tput ed` CL=`tput clear` HO=`tput home`
        CF=`tput civis` CN=`tput cnorm` F="%12.2f%3d$ED$HO"
        echo "$CF$CL\c"
        HDR="`ps -p1 -opid -opcpu -oc -oargs | head -1`"
        while :
        do
          ps -e -opid= -opcpu= -oc= -oargs= |
          sort -rn +1 |
          mawk -v H="$HDR" -v N="$N" -v E="$EL" -v F="$F" '
            BEGIN{print H;N-=2}
            $2>0||$3{print substr($0,1,79) E;P+=$2;C+=$3}
            NR>=N{exit}
            END{printf F,P,C}'
          sleep ${1-1}  # sleep time on script's command line (default 1 sec.)
        done
 

(change "mawk" to "awk" if you don't have it- it still runs, just more slowly)

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