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@sillyfellow
Last active February 8, 2016 13:09
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#!/bin/bash -
#===============================================================================
# FILE: Mind Trainder
# USAGE: ./mind_trainer.sh
#
# DESCRIPTION: Train your mind to quickly find your income as a freelancer.
# AUTHOR: Dr. Sandeep Sadanandan (sillyfellow), [email protected]
#===============================================================================
set -o nounset # Treat unset variables as an error
function my_random()
{
echo $(shuf -i $1-$2 -n 1)
}
# Of course, you could have rates like 55.5 per hour.
# But I am going with multiples of five.
function five_floor()
{
NUMBER=$1
ffREM=$((NUMBER % 5))
echo $((NUMBER - ffREM))
}
function check_correctness()
{
EXPECTED=$1
begin_time=`date +%s`
read COMPUTED < /dev/tty
end_time=`date +%s`
TIMETAKEN=$((end_time - begin_time))
CORRECTNESS="Wrong!! (expected: $EXPECTED)"
[ $EXPECTED -eq $COMPUTED ] && CORRECTNESS="Correct!!!"
echo "You took $TIMETAKEN, and you were completely $CORRECTNESS"
}
function evaluate_hours()
{
DAYS=$1
echo "Find the total hours of work in $DAYS days"
check_correctness $((DAYS * 8))
}
function evaluate_netto()
{
DAYS=$1
RATE=$2
echo "Now tell me your netto at a rate of $RATE!"
check_correctness $((DAYS * 8 * RATE))
}
function evaluation_round()
{
DAYCOUNT=$(my_random 8 18)
HOURRATE=$(five_floor $(my_random 70 131))
evaluate_hours $DAYCOUNT
evaluate_netto $DAYCOUNT $HOURRATE
}
while true
do
evaluation_round
echo ""
done
@sillyfellow
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Example output
Once wrong, and once correct.

~/g/s/g/M/energis_app_server » ./mind_trainer.sh
Find the total hours of work in 16 days
0
You took 3, and you were completely Wrong!! (expected: 128)
Now tell me your netto at a rate of 110!
0
You took 3, and you were completely Wrong!! (expected: 14080)

Find the total hours of work in 16 days
128
You took 13, and you were completely Correct!!!
Now tell me your netto at a rate of 125!
16000
You took 8, and you were completely Correct!!!

Find the total hours of work in 16 days
^C
~/g/s/g/M/energis_app_server »

@sillyfellow
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Of course, no real error checking.

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