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Bash - for loop with counter

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Created by:

martineau

1320

This article will show you how to use for loop with a counter in Bash.

Syntax:

#!/bin/bash

for (( INITIALIZER; CONDITION; STEP))
do
    # commands
done

Practical example

#!/bin/bash

for (( i=0; i<5; i++ ))
do  
   echo $i
done

Output:

Infinite loop

#!/bin/bash

for (( ; ; ))
do  
   echo "Hello"
done

Output:

Hello
Hello
Hello
Hello
Hello
Hello
Hello
Hello
...

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