SHELL

bash random number

$ echo $(( $RANDOM % 10 ))

range of random numbers bash

$(((RANDOM % $((upperBound - lowerBound))) + lowerBound))

bash generate random number between

#If you have coreutils installed and want a number inbewtween a value
shuf -i MIN-MAX -n 1
#or you can use bash 
$RANDOM

bash random int

$ echo $((1 + $RANDOM % 10))
3

random number in bash

echo $RANDOM
echo $(( $RANDOM % 50 + 1 ))