while ... do

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wikipedia:While


#!/bin/bash
while true; do
  ((my_var++))
  echo $my_var
done
while true; do tput bel; sleep 5; done

Response time:

while true; do echo "Time_total"; curl -so /dev/null -w '%{time_total}\n' test.wikieduonline.com; sleep 1;  done

Fish shell:

while CONDITION; COMMANDS; end


  • cat your_file.txt | while read i; do echo "YOUR_TEXT $i"; done
  • cat your_file.txt | while read i; do echo "$(date) $i"; done


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