Shell Programming and Scripting

command="/usr/bin/stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M"

maxruntime=$1

$command >/dev/null 2>/dev/null &
watchpid=$!

/bin/sleep "$maxruntime"

if [ -d "/proc/$watchpid" ]
then
        echo "Max runtime exceeded, killing PID $watchpid"

        if /bin/kill -9 "$watchpid" >/dev/null 2>/dev/null
        then
                echo "Killed."
                exit 0
        else
                echo "Could not kill, please investigate manually."
                exit 1
        fi
fi

#!/bin/bash
# Ubuntu_Mate 18.04 LTS
#-----------------------------------
# Much help from https://www.unix.com/shell-programming-and-scripting/
# https://ubuntuforums.org/ https://askubuntu.com/ https://ubuntu-mate.community                                 
#                                 
# don't use ALLCAPS for variable names
#-----------------------------------

LogFile="/home/andy/bin/CPU_Stress_Test.txt"
maxruntime=15s
command=(/usr/bin/stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout "$maxruntime")
# remove logfile if it exists
if [ -f "$Scripts" ];
then
rm $Scripts
fi

"${command[@]}" & watchpid=$!

date +"%Y-%m-%d-%H:%M:%S" >> $LogFile
sensors -f | grep "temp4" >> $LogFile
sensors -f | grep "fan1" >>  $LogFile

/bin/sleep "$maxruntime"

if [ -d "/proc/$watchpid" ]
then
        echo "Max runtime exceeded, killing PID $watchpid"

        if /bin/kill -9 "$watchpid" >/dev/null 2>/dev/null
        then
                echo "Killed."
                exit 0
        else
                echo "Could not kill, please investigate manually."
                exit 1
        fi
fi
date +"%Y-%m-%d-%H:%M:%S" >> $LogFile
sensors -f | grep "temp4" >> $LogFile
sensors -f | grep "fan1" >>  $LogFile