All posts by HydTech

Install Nginx with ngx_pagespeed on CentOS 7

Zabihah Halal Vitamins
Install Nginx with ngx_pagespeed on CentOS 7
Ngx-pagespeed is a free and open source Nginx module that can be used to speeds up your site and reduces page load time. It works by automatically applying web performance best practices to pages and associated assets without requiring you to modify your existing content or workflow. You can easily optimize various files such as CSS, HTML, png, and jpg using Ngx-pagespeed module.

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Software Defined Networking (SDN) – Architecture and role of Openflow

Zabihah Halal Vitamins
Software Defined Networking (SDN) – Architecture and role of Openflow
In our previous article, we had a good overview of SDN as a technology, why it’s needed, and how IT industry is adopting it. Now, let’s get a layer deeper, and understand SDN’s architecture and the role of the Openflow protocol in the implementation of the technology.

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Linux cksum command explained for beginners (with examples)

Zabihah Halal Vitamins
Linux cksum command explained for beginners (with examples)
In Linux, there’s a command line tool that you can use to create/verify checksum. It’s dubbed cksum. Most vendors offer a checksum (or a checksum-like code) corresponding to the file(s) being downloaded. If the file doesn’t behave in an expected way, user’s can recompute the file’s checksum and compare it with the original checksum provided by the vendor to see if the file is intact or got corrupted.

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Linux clear command tutorial for beginners (3 examples)

Zabihah Halal Vitamins
Linux clear command tutorial for beginners (3 examples)
Sometimes, while working on the command line, you arrive at a point where there’s too much text on the terminal screen, and none of that is relevant to you. So, in order to avoid distraction, you’d want to clear the terminal screen. Those new to the Linux command line may not know that there exists a dedicated command line utility that does this work for you.

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How to find and delete directory recursively on Linux or Unix-like system

How to find and delete directory recursively on Linux or Unix-like system

I type ‘find . -type d -iname foo -delete‘ command to find the foo directories and delete them. However, I am getting an error message that read as find: cannot delete './hourly.4/data/foo': Directory not empty on Linux server. How do delete directories based on find command output on Linux or Unix-like system?
Halal Vitamins

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