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Best Linux Tutorials

Find the best Unix and Linux Tutorials for both newbies and advanced users. All our Linux tutorials are based on the most stable Linux OS we use: CentOS and RHEL operating systems.

But on some guides, we will also write and post solutions for Ubuntu and Debian systems, that are very well known inside the Linux community.

Linux Jpeg Image Optimization Command

Days ago we wrote a very useful tutorial on how to optimize / compress PNG files on Linux using the fantastic optipng command. However, lot of users have JPG / JPEG files also, which are widely used for high resolution photographies. What’s the Linux jpeg image optimization command to compress those files? What is JPG format? JPG file…

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Find RAM size in Linux

When you order a dedicated server or cloud server with your web hosting provider, there is one thing you must check always when you first login into your system: your hardware must be exactly the same as ordered. Lot of times, because of order mistakes, dedicated servers providers will give you less hardware resources than the ones you…

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How can I Disable CPU Frecuency Scaling?

As a web performance addict, I’m always looking for ways to improve system performance and speed web applications. And today I will share with you the magic of CPU frecuency scaling, and a practical how to guide to disable CPU frecuency scaling to run your system at full CPU speed. Before getting into how to disable CPU frecuency scaling,…

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Find out RAID Controller Type and Model on Linux

Sometimes you need to find out RAID controller type and model on Linux servers, and this can become a tricky situation if you don’t know the right commands. On this post we will explore exactly that, how to get your Raid type and Model. Linux Command to find out Raid Controller Type and Model lshw and lspci are…

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Bash: No space left on device

If you get this error on your Linux web server: -bash: No space left on device , that means there is no space left on some of your Linux partitions and you need to free up disk space asap. When you are running out of space on your server many system services will start failing. On this post we…

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How to Create a Custom SSH login welcome message

When you login to your Linux servers often you will see an SSH login welcome message. This messages are friendly reminders of system stats, software versions, or just a warning for external cracking intrusions. Today we will help you to create a custom SSH login welcome message for your Linux box. Create a custom SSH login welcome message Creating a…

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How to run Rsync process in background

Question: how can I run rsync process in background? Answer: rsync can be run in background by using the nohup command in front of it, and & at the end. Let’s explore how to run this command as background process in Linux. Why would I need to run rsync process in Background ? Well, I’m pretty sure that…

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