Holhol24 - Linux Howtos, Tutorials & Guides

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Whether you are a seasoned system administrator or a new Linux user, service management is one of the fundamental operations you will have to carry out. Hence, having a firm grasp of how services work and how to manage them is a great…

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I can bet that we are all familiar with sudo. It is a utility available in most Linux distributions and being adopted by those that haven’t implement it yet. Therefore, if you are a regular Linux user, sudo is a must-use tool. Sudo is a…

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Message-Digest algorithm, commonly known as md5 hash, is a type of cryptographic hash function mainly used to verify the integrity of files. Md5 is a 128-bit message digest produced after running the MD5 function against a file. Md5 has its…

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In various instances, you will need to edit the host file in the system. That can be to either use it as a firewall, i.e., control some network traffic, add a domain name, or test out its functionality. The host file is a local file or…

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Names or labels are useful as they allow us to identify one thing or one person from another. Even a person’s name, which might not be globally unique, contains a set of characters that allow a person to become distinguished from another…

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You may have come across the saying, “Everything is a file in Linux.” Although this is not entirely true, it does hold a set of truths to it. In Linux and Unix-like systems, everything is like a file. That means the resources in the Unix…

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We all love SSH! It is a powerful tool that we use to interact with remote machines and perform heavy tasks at the comfort of our local terminal. Due to the comfort and control that SSH gives us, we try to implement methods such as…

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Htop is one of the greatest task managers for Linux systems. Okay, I am a little biased as I have actively contributed to its code. However, I think we can agree that htop is a great tool for monitoring and understanding what is going on…

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When working with graphical desktop environments, we rarely worry about background processes. If we have a process running in the foreground, we can quickly spawn another terminal window and continue with our work. However, if you are in a…

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Secure copy or SCP is a command-line utility that allows users to transfer files and directories securely from one machine to another over SSH protocol. SCP is handy as it is easy to use. Some of the features of using SCP to transfer files…