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How should I change this to check whether val has an even or odd numeric value?
val=2 if $((RANDOM % $val)); ... 
898
If a number is evenly divisible by 2 with no remainder, then it is even. You can calculate the remainder with the modulo operator % like this num % 2 == 0 . If a number divided by 2 leaves a remainder of 1, then the number is odd.
To tell whether a number is even or odd, look at the number in the ones place. That single number will tell you whether the entire number is odd or even. An even number ends in 0, 2, 4, 6, or 8. An odd number ends in 1, 3, 5, 7, or 9.
In JavaScript, there are two ways to check if a variable is a number : isNaN() – Stands for “is Not a Number”, if variable is not a number, it return true, else return false. typeof – If variable is a number, it will returns a string named “number”.
$ a=4 $ [ $((a%2)) -eq 0 ] && echo "even" even $ a=3 $ [ $((a%2)) -eq 0 ] && echo "even" 
foo=6 if [ $((foo%2)) -eq 0 ]; then echo "even"; else echo "odd"; fi If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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