03. Until loops until, do, done

Until loops are very similar to while loops except they run as long as the exit status of the condition is unsuccessful.

until [ condition exits successfully ]
do
  # Commands here
done

A simple example - counting up to 10

Here is a quick example that runs the until loop until our value is greater than 10.

#!/bin/bash
 
value=1
until [ ! $value -le 10 ]
do
  echo "$value is not yet greater than 10."
  ((value=$value+1))
done
 
echo "$value is now greater than 10!"

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