Using Arithmetic Operations

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#!/bin/bash
# Counting to 11 in 10 different ways

n=1;echo -n "$n"

let "n = $n + 1"
echo -n "$n"

: $((n = $n + 1))
echo -n "$n"

((n = n + 1))
echo -n "$n"

: $[ n = $n + 1]
echo -n "$n"

n=$[ $n + 1 ]
echo -n "$n"

((n++))
echo -n "$n"

: $[ n++ ]
echo -n "$n"

: $((n++))
echo -n "$n"

 

echo
exit 0

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