today's howtos

• How to install ntopng on Ubuntu 22.04?

  In this post, you will learn how to install ntopng in Ubuntu 22.04. This powerful network monitoring tool is a marvel that we can always install to take advantage of it.

• What is the /etc/aliases file – TecAdmin

  /etc/aliases is a text file used to store email aliases on a Linux system. Email aliases are basically nicknames for email addresses. They allow you to send emails to a group of people using a single address, or to redirect emails from one address to another. /etc/aliases are typically used to store aliases for the system’s mail server. However, it can also be used to store aliases for any other purpose. For example, you could use /etc/aliases to create an alias for your own email address. This file is stored in the /etc directory, which is the standard location for system-wide configuration files. /etc/aliases are usually managed by the system administrator. However, you can also edit /etc/aliases yourself if you need to add or change an alias.

• How to Install LXC to Create Linux Containers on RHEL/CentOS/Rocky Linux

  In this article, I will take you through the steps to install LXC (Linux containers) on RHEL/CentOS/Rocky Linux but before that let’s understand the first LXD. It is a free and open source next-generation system container and virtual machine manager. LXD provides a template that contains images of almost all the major Linux distributions. These images can be used to create Linux containers using the LXC utility. This is a CLI-based client utility provided by LXD. When running a virtual machine, LXD uses the hardware of the host system, but the kernel is provided by the virtual machine. Therefore, virtual machines can be used to run, for example, a different operating system.

• Finding Your Router’s IP Address (Default Gateway) in Ubuntu and Other Linux

  You probably already know how to get your system’s IP address in Linux. But how do you know the IP address of your router?

• Guide to Web Application Penetration Testing

  Web application penetration testing is a technique that aims at evaluating web applications and gathering information concerning the possible vulnerabilities and security flaws in the system. The technique involves a series of steps that include identifying vulnerabilities and gathering detailed information on how these vulnerabilities could compromise the web application and impact business.

• How to Cut, Copy and Paste Text in Nano editor?

  GNU Nano is an editor that has a minimal learning curve and hence is widely used for beginner-level guides. That doesn't mean that it is as easy to use for beginners as a graphical text editor. Why? because you still have to rely on the keyboard shortcuts to do the basic things such as save, undo, etc. How about cut, copy and paste in Nano? Does it require specific keyboard shortcuts too? Well, yes and no. You can use the mouse to copy-paste. There are also keyboard shortcuts for the same purpose. To cut, you must use shortcuts.

RHEL / Red Hat / IBM Leftovers

• The History of RHEL (Red Hat Enterprise Linux) Distribution

  Developed by Red Hat, Red Hat Enterprise Linux, colloquially abbreviated as RHEL, is a commercial opensource Linux distribution tailored for the enterprise market. It is available for both server and desktop versions. For servers, it is available for x86-64, IBM Z, ARM64, and Power ISA. For the desktop version, it is avaiable for the x86-64 architecture. The Upstream project on which Red Hat Enterprise Linux major releases are based is Fedora Linux. This is where crucial OS innovations are introduced and thoroughly tested.

• IBM i PTF Guide, Volume 24, Number 26

  There have been some remediations for some issues with the MQSeries message queuing middleware for the IBM i platform, including IBM MQ Version 9.2.4 CD and IBM MQ Version 9.2.5 CD. You can find out more here. As for remediation or fixes, this issue was resolved under APAR IT40453. Upgrade to IBM MQ Version 9.3, there are no workarounds and mitigations.

• Infor Puts CM3 Project On Hold

  Infor is no longer developing an on-premise and containerized version of M3, its ERP system that’s popular with IBM i customers. While the CM3 project is apparently dead, the company is working to certify the latest release of the ERP system on IBM i version 7.5, IT Jungle has learned.

• PowerTech AV Automatically Detects Ransomware Activity [Ed: Fake security which instead of prevention does detection]

  IBM i shops that are concerned about ransomware attacks may be interested in a new release of PowerTech Antivirus from HelpSystems, which can automatically detect ransomware activity on the IBM i system and block it before it can cause damage. There’s also a nifty new “canary file” feature that will hopefully keep IBM i users from falling down the coal mine.

• IBM Mulls Using DataMigrator as Cloud Warehouse Pipeline

How to Exclude Packages from Transactions using DNF in RHEL Linux

While updating packages in your system, you might not want to allow specific packages from transactions, such as updates, for various reasons, such as bugs or instability in the latest release. Packages such as Kernel, PHP, MySql, Apache, Nginx, Python, etc., are regularly used on the running server. Updating them into unstable releases might lead to a catastrophe event.