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IBM/Red Hat/Fedora Leftovers

Submitted by Roy Schestowitz on Monday 9th of August 2021 01:45:56 PM Filed under
Red Hat
  • Parsing command options in Lua | Opensource.com

    When you enter a command into your terminal, there are usually options, also called switches or flags, that you can use to modify how the command runs. This is a useful convention defined by the POSIX specification, so as a programmer, it's helpful to know how to detect and parse options.

    As with most languages, there are several ways to solve the problem of parsing options in Lua. My favorite is alt-getopt.

  • 8 DevSecOps pitfalls to avoid | The Enterprisers Project

    Building security into DevOps is more important than ever. The 2021 Upskilling Enterprise DevOps Skills Report reported that 56 percent of survey respondents said DevSecOps is a must-have in the automation tool category. However, a DevSecOps approach is not about simply adding security tools and practices. Like any DevOps approach, it needs to be built into the culture, processes, and technology.

    When DevSecOps isn’t strategically implemented across the organization, it’s easy to hit security roadblocks or issues. The best bet for success is to avoid these potential issues from the get-go. We asked experts including SKILup Day: DevSecOps participants and DevOps Institute Ambassadors to share common DevSecOps pitfalls. Here's what they say you should avoid:

  • Forcing Linux system password changes with the chage command | Enable Sysadmin

    Some of you may work in highly regulated industries, such as medical, government, government contracting, and food and beverage. You probably have strict guidelines for password aging, regular password changes, minimum length, complexity, and minimum time limits between password changes. Others of you might use equally strict guidelines simply because it's a good practice to do so. This article describes how to audit user accounts and set some guidelines around password expiration and change frequency. For the examples, I use the chage command.

  • NMState: A declarative networking config tool - Fedora Magazine

    This article describes and demonstrates NMState, a network manager that uses a declarative approach to configure hosts. This means you define the desired configuration state through an API and the tool applies the configuration through a provider.

  • Debugging function parameters with Dyninst | Red Hat Developer

    As a part of my work at Red Hat, I verify the accuracy of the debugging information that maps between the executable binary generated by compilers and the original source written by the developer. Additionally, I look for complications in the debugging information that stem from compiler optimizations. It is possible to manually inspect the binary and review the debugging information for discrepancies. However, for significant applications, it would take too much time to manually review the megabytes of data. It's also too easy to overlook one drop of erroneous information hidden in the vast sea of correctly generated debugging information.

    To automate this type of analysis, you need a tool that analyzes both the debugging information and the binary executable. Dyninst, available in Fedora and Red Hat Enterprise Linux, provides a suite of dynamic and static analysis and instrumentation tools that you can use for this purpose. A previous Red Hat Developer article, Using the SystemTap Dyninst runtime environment, discussed Dyninst's dynamic instrumentation. This article demonstrates how to write a simplified static analyzer in Dyninst.

»

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.

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