The bash environment variable ‘RANDOM’ is a pseudo-random number generator built in bash, and it can generate random numbers in the range of 0 – 32767.

Using the command `echo $RANDOM`, we can generate a random number. Building a random number generator which emits a sequence of random numbers is pretty easy.

#!/bin/bash
for i in `seq 1 10`:
do
echo $RANDOM;
sleep 1s;
done

The ‘seq’ or the ‘sequential’ can be used to generate a sequence of numbers.