ActiveXperts Network Monitor
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Monitor CPU Usage on Linux using an SSH Secure Shell Script

The following script can be used in ActiveXperts Network Monitor to check CPU usage on a remote LINUX machine:

#################################################################################
# ActiveXperts Network Monitor  - shell script checks
# © 1999-2008, ActiveXperts Software B.V.
#
# For more information about ActiveXperts Network Monitor and SSH, please
# visit the online ActiveXperts Network Monitor Shell Script Guidelines at:
#   http://www.activexperts.com/support/network-monitor/online/ssh/
#################################################################################

#!/bin/sh

# Macro definitiions
Max=$1
TotalPS=0

# Validate number of arguments
if [ $# -ne 1 ] ; then
  echo "UNCERTAIN: Invalid number of arguments - Usage: cpu_load "
  exit 1
fi

# Check the CPU usage
for PSID in `ps uax | awk '{if ($3 > 0) {print $3} }'`
do
  TotalPS=`echo "$TotalPS $PSID" | awk '{ print $1 + $2 }'`
done

# Check if the CPU usage good or bad is
st=$(echo "$TotalPS < $Max" | bc)
if [ $st -eq 1 ] ; then
  echo "SUCCESS: CPU usage is [$TotalPS%], maximum allowed=[$1%] DATA:$TotalPS%   $loaddelta"
else
  echo "ERROR: CPU usage is [$TotalPS%], maximum allowed=[$1%] DATA:$TotalPS%   $loaddelta"
fi