Found this cool little thing today when I was looking for a way to create a random number in BASH. It seems that BASH does the hard work for you and creates a variable called $RANDOM

# echo $RANDOM  
# echo $RANDOM  
# echo $RANDOM  

And if you want to print off a certain range such as 0 - 100 you can do it like so.

# echo $((RANDOM%100))  

Figured I would share this as it is a cool little trick.

About Benjamin

Benjamin is a Infrastructure and Software Engineer. On this blog he writes about Linux, Docker, Programming as well as other Systems topics.

Learn more about Linux

If you liked this article, check out Benjamin's book: Red Hat Enterprise Linux Troubleshooting Guide. Where you can learn a lot more about troubleshooting Linux systems. This book is filled with tips and techniques he has learned over years of managing mission critical systems.