mximum load factor reporting script

maxload.bash

#!/usr/bin/bash
# Simple Script which prints the maximum load factor to stdout.
# Henri Shustak (C) 2023
# Released Under GNU GPL v3 or later

# version 1.0 initial release.
# version 2.0 bug fix which resulted in different load factor being reported.
# version 3.0 added date to output
# version 4.0 added an optional reset paramater
# version 4.1 bug fix regarding reset time

reset_each_day=true
sleep_interval=2

max_load=0
max_loops=0

current_time=$(date +%s)
midnight_time=$(date -d "tomorrow 00:00:00" +%s)
seconds_until_midnight=$((midnight_time - current_time))
loops_until_midnight=$((seconds_until_midnight / sleep_interval))

while true ; do
        current_load=`uptime | awk -F "load average: " '{print $2}' | cut -d ' ' -f1 | tr -d ','`
        if (( "$(echo "$current_load > $max_load" | bc -l)" )) ; then
                max_load=$current_load
                echo -e "$max_load \t|    `date +%Y-%m-%d--%H:%M:%S--%Z`"
        fi
        if [ "$reset_each_day" == "true" ] ; then
                if [[ $max_loops -ge $loops_until_midnight ]] ; then
                        loops_until_midnight=$((86400 / sleep_interval))
                        max_load=0
                        max_loops=0
                        echo "### MAX Load Reset!  `date +%Y-%m-%d--%H:%M:%S--%Z`"
                fi
                ((max_loops++))
        fi
        sleep $sleep_interval
done