The Unix diff command is very handy, but it can do a lot more than just let you know if two files that you’re evaluating are the same or different. It can find and show you the differences and it can ...

Every now and then I come across a feature of some Linux command that works so well that I have trouble understanding how I managed without it for so long. The one that I most recently discovered is ...

I use the Linux command line daily, but that's because I learned Linux the hard way and those old lessons stuck. Most users could go their entire Linux lifetime and never run a single command. Some ...

For many users who get started with the command line in Linux, there’s a good chance they’re using Bourne Again Shell, or Bash. Bash is the default shell on Mac OS X, and Windows users can use Bash ...

Linux might sound scary for first-time Linux users, but actually, it isn’t. Linux is a bunch of open-source Unix operating systems based on Linux Kernel. These operating systems are called Linux ...

Working on the command line is an integral part of being a successful Linux user. You need to have a firm grasp of certain commands to work effectively. There are even certain commands that you must ...

The commands below include basic Unix commands such as ls, cat, cp, mv, grep, etc. We will also talk about some of the shortcuts that can help you take control of your operating system faster and in a ...

I have the following bash script which tests 2 jpgs and displays a message if they are different.<br><br> diff -a --brief fullsize.jpg fullsize.jpg.bak<br> echo "diff=$?"<br> if [ $? -eq 1 ]; then<br> ...