Here is how to generate a random number in a bash shell script. In the bash shell we have environmental variable $RANDOM that can generate a unique random number each time it is referenced.
echo $RANDOM
And to assign this value to a variable :
var=$RANDOM
![Generate a random number 🔢 in Unix Shell Script image 1 - Generate a random number 🔢 in Unix Shell Script](https://i0.wp.com/pcx3.com/wp-content/uploads/2021/02/image-1.png?resize=394%2C177&ssl=1)