Blog

VIM: file editor command line on Linux

VIM: file editor command line on Linux

VIM is a free text editor, open-source in Unix-like/Linux command line. The main purpose of an editor is to create, add, or modify text for a file. Open file Syntax vi [tùy_chọn] [filename] Adding, Changing, and Deleting Text Note: You…

ls command list files and directories in Linux

ls command is a basic Linux shell command used to list files and directories. ls command comes with so many arguments and features like: sort files and directories by Date, by Size, able to check hidden files and directories, permissions,…
What is DNSSEC and Why is it important?

What is DNSSEC and Why is it important?

Domain Name System Security Extensions, or DNSSEC, is an important security protocol that prevents internet users from being redirected to fraudulent websites and unintended addresses. Simple enough but understanding how it works calls for…
What is DNS and how is DNS works

What is DNS and how is DNS works

The Domain Name System (DNS) helps users find their way around the Internet. Every computer on the Internet has a unique address called its "IP address" (Internet Protocol address). Because IP addresses (which are strings of numbers) are…