Fun infinite loops: random number guessing: bash #3

Posted on by Tony Tam

An actual game using Terminal on the Mac is something with guessing numbers

Open the Terminal.App from your Mac by holding down command space and typing Terminal


RANDOM=$$
while true
do

echo "can you guess a number between 1 and 10 : "
read
echo The number is :
echo `expr $RANDOM % 9 + 1`
echo

done

can you guess a number between 1 and 10 :
3
The number is :
5

can you guess a number between 1 and 10 :
4
The number is :
5

can you guess a number between 1 and 10 :
9
The number is :
4

can you guess a number between 1 and 10 :
The number is :
3

Control-C to tell the computer to stop, remember the computer is not very smart like humans

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Fun infinite loops : bash #2

Posted on by Tony Tam

A second fun loop with Terminal on the Mac is something with time

Open the Terminal.App from your Mac by holding down command space and typing Terminal

while true
do
date
date +%T
sleep 1
done

Thu Nov 7 07:38:50 PST 2013
07:38:50
Thu Nov 7 07:38:51 PST 2013
07:38:51
Thu Nov 7 07:38:52 PST 2013
07:38:52
Thu Nov 7 07:38:53 PST 2013
07:38:53

Control-C to tell the computer to stop, remember the computer is not very smart like humans

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Fun infinite loops: bash #1

Posted on by Tony Tam

C. somehow got interested again in programming and she opened the Terminal App from her Mac and typed


echo why doesn't this work
quote>
quote>
quote>
quote>

I told her the single quote character is a special character that the not so smart computer need the human to escape it

Control-C would tell the computer to abort whatever it is doing

echo "why doesn't this work

Then she asked how do we do that infinite loop

while true
do
echo hey you c8
sleep 1
donehey you c8
hey you c8
hey you c8
hey you c8
hey you c8
hey you c8
hey you c8
hey you c8
hey you c8

Fun!