Written by Benjamin Cane on 2011-07-01 23:11:38

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.

Picture of Benjamin Cane

Benjamin is a Systems Architect working in the financial services industry focused on platforms that require Continuous Availability. He has been working with Linux and Unix for over 10 years now and has recently published his first book; Red Hat Enterprise Linux Troubleshooting Guide.


Identify, capture and resolve common issues faced by Red Hat Enterprise Linux administrators using best practices and advanced troubleshooting techniques

What people are saying:
Excellent, excellent resource for practical guidance on how to troubleshoot a wide variety of problems on Red Hat Linux. I particularly enjoyed how the author made sure to provide solid background and practical examples. I have a lot of experience on Red Hat but still came away with some great practical tools to add to my toolkit. - Amazon Review

Sponsored by