Bash Increment Counter Integer Variable

To increment a counter in bash, use any of the following:

Code

#!/bin/bash
 
set -x
 
x=1
echo $x
 
(( x++ ))
echo $x
 
(( x += 1 ))
echo $x
 
let x++
echo $x

Code

+ x=1
+ echo 1
1
+ ((  x++  ))
+ echo 2
2
+ ((  x += 1  ))
+ echo 3
3
+ let x++
+ echo 4
4

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