Example infinite loop:

 i=0; while [[ $i -eq 0 ]]; do echo Hello; sleep 2; done

Example loop stops after 11 iterations:

i=0; while [[ $i -le 10 ]]; do echo Hello; sleep 2; ((i++)); done

This does not stop after one iteration. It is an infinite loop playing ever wav file in the directory

echo $?; while [[ $? -eq 0 ]]; do aplay *.wav; done

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