Boolean check on Bash¶

#!/bin/bash

# There are a lot of work behind the boolean conditions check with Bash.

# More idea captured: https://stackoverflow.com/questions/2953646/how-can-i-declare-and-use-boolean-variables-in-a-shell-script

# Below returned different values.

# Failed
if [[ true &&  true && true &&  false ]];
then echo 1
else echo 2
fi;

# Worked
if true && true && true && false;
then echo 1
else echo 2
fi;