RaceConditionSim.sh

#!/usr/bin/env bash

###
 # RaceConditionSim.sh
 # A script to simulate a Race Condition
 #
 # Copyright (c) 2021 Dayo Akanji
 # MIT License
###

# Provide custom colours
msg_base() {
    echo -e "\033[0;36m$1\033[0m"
}
msg_info() {
    echo -e "\033[0;33m$1\033[0m"
}
msg_status() {
    echo -e "\033[0;32m$1\033[0m"
}
msg_error() {
    echo -e "\033[0;31m$1\033[0m"
}

## ERROR HANDLER ##
runErr() { # $1: message
    # Declare Local Variables
    local errMessage

    errMessage="${1:-Runtime Error ... Exiting}"
    echo ''
    msg_error "${errMessage}"
    echo ''
    echo ''
    exit 1
}
trap runErr ERR


# Run the Simulation
clear
msg_info '## Simple Race Condition Simulator ##'
msg_info '-------------------------------------'
LoopCount=0
for (( ; ; )) ; do
    LoopCount=$(( LoopCount + 1 ))
    OUR_RAND_A=$(( RANDOM % 3 ))
    OUR_RAND_B=$(( RANDOM % 3 ))
    OUR_RAND_B=$(( OUR_RAND_B + 1 ))

    if (( LoopCount < 10 )) ; then
        LoopTally="0${LoopCount}"
    else
        LoopTally=${LoopCount}
    fi

    if ((OUR_RAND_A > OUR_RAND_B)) ; then
        msg_error "ATTEMPT ${LoopTally}: 'Kernel Panic'"
        echo ''
        msg_info "Kernel Panic at Attempt ${LoopCount}"
        echo ''
        break
    else
        msg_status "ATTEMPT ${LoopTally}: 'Booted'"
    fi
    if (( LoopCount > 99 )) ; then
        echo ''
        msg_info "Halted on ${LoopCount} Successful Boots"
        break
    fi
done