One of the common tasks you'll encounter when scripting in Bash is performing arithmetic operations on variables, particularly division. This process might seem straightforward, but it requires ...

There are quite a few ways to increment and decrement numeric variables in bash. This post examines the many ways you can do this. When preparing scripts that will run in bash, it’s often critical to ...

Linux 101: What are environment variables? Your email has been sent Jack Wallen introduces you to Linux environment variables. What are they and how are they set and ...

Are you currently learning Bash? Have you seen things like $0 and $EUID and wondered what they mean? Or what the difference is between $UID and $EUID? I'll cover ...

When spending most of your day around bash shell, it is not uncommon to waste time typing the same commands over and over again. This is pretty close to the definition of insanity. Luckily, bash gives ...

I'm working on some scripts that execute on various servers, and I'm trying to consolidate them into one. The problem is that I need to run remote commands but can't ...

This post follows up on Part 1 by examining the many ways that you can test the value of variables – e.g., whether they equal particular strings like “yes” or “no”, if they have a numeric value, if ...