define-my-own-pre-increment-unary-function.sh

# This shell file used for practice the learning from the following link:
# - https://blog.dnmfarrell.com/post/bash-function-names-can-be-almost-anything/

function ++ { (( $1++ )); }

a=1
++ a
echo $a

This snippet demonstrate the usage of arithmetic in bash.

#!/bin/bash
a=1
(( a++ ))
echo $a