Linux FAQ resource and tutorials

This blog features Linux FAQs, hands-on tips and detailed tutorials on Linux software, Linux networking, security, virtualization and cloud computing.

How to limit network bandwidth on Linux

If you often run multiple networking applications on your Linux desktop, or share bandwidth among multiple computers at home, you will want to have a better control over bandwidth usage. Otherwise, when you are downloading a big file with a downloader, your interactive SSH session may become sluggish to the point where it’s unusable. Or […]
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How to make a file immutable on Linux

Suppose you want to write-protect some important files on Linux, so that they cannot be deleted or tampered with by accident or otherwise. In other cases, you may want to prevent certain configuration files from being overwritten automatically by software. While changing their ownership or permission bits on the files by using chown or chmod […]
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How to apply image effects to pictures on Raspberry Pi

Like a common pocket camera which has a built-in function to add various effects on captured photos, Raspberry Pi camera board (“raspi cam”) can actually do the same. With the help of raspistill camera control options, we can add the image effects function like we have in a pocket camera. There are three comman-line applications […]
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What are useful command-line network monitors on Linux

Network monitoring is a critical IT function for businesses of all sizes. The goal of network monitoring can vary. For example, the monitoring activity can be part of long-term network provisioning, security protection, performance troubleshooting, network usage accounting, and so on. Depending on its goal, network monitoring is done in many different ways, such as […]
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