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How can I Identify who SSH into my Linux System?

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Linux

Identifying who has logged into your system in Linux is way easier than the Windows Operating System.

In Linux System whenever someone tries to log in using SSH is recorded by the log file, the log file is located in /var/log/auth.log. location can be different in other distribution.

If you not found the auth.log file in your system try to execute the below command to view the log from systemctl.

journalctl -u sshd |tail -100

  • -u (Show the user journal for the current)
  • sshd (SSH user created by system by default)
  • tail -100 (Print top 100 result from log file)

journalctl of sshd
User logged in using SSH

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Kali Linux for android without rooting your device

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Linux

Kali Linux for android devices under ten minutes in just few steps.
Kali Linux for android

Daylight Linux Version 4

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Linux

Daylight Linux (Web site) version 4 has just been released.

The Linux kernel is now upgraded to the 5.3 version for the AMD64 live version and Kernel 4.19.68 for the Raspberry Pi version.

All packages are upgraded to the Debian 10 version or to the cutting-edge version (experimental) for all current software packages.

Added compatibility for the Raspberry Pi 4.

By Hamdy Abou El Anein
Founder / Linux system engineer

Daylight Linux V4

Daylight Linux V4

Daylight Linux V4

Daylight Linux V4

Daylight Linux V4

Microsoft's Deadly Touch

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Linux

Mask of death

Everything Microsoft touched has died. Remember Nokia, Yahoo and Novell? What happened to these companies and where are they now? This is exactly what Microsoft wants to do to Linux because they don't innovate and they can't compete; so they infiltrate. Sooner or later Linux will be part of those latter companies. Something to watch out for.

Assess your Linux Knowledge.

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Linux

This Linux testmight help to check your personal knowledge of the various topics discussed in the Linux/UNIX fundamentals courses, in order to find out assess your Linux skills.

Olinux- Everything about Linux

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Linux

Our goal is to help you solve your computer problems and learn new technologies. We write about things that are in any way related to Linux. This website is updated regularly with high quality content. Content throughout OLinux.net and Ethical Hacking covers the following areas:

VAR-SOM-MX7 is now available with Certified 802.11ac/a/b/g/n and Bluetooth 4.2 support

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Linux

Variscite Announces the Upgrade of its VAR-SOM-MX7 SoM with Bluetooth 4.2 and the Launch of its New VAR-SOM-MX7 Variant with Improved Dual-band 802.11ac/a/b/g/n Certified Wi-Fi Module.

Translation of the Latest 'Microsoft Loves Linux' Charm Offensive

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Linux

QUITE a few additional articles -- mostly puff pieces (below is a complete/exhaustive list) -- have been published since yesterday's blog post, which was followed by a short article from Techrights. There is a lot of Microsoft PR inside the news/media right now (more and more by the hour) and it's coordinated (sometimes in advance, based on what we learned yesterday) by Microsoft. Here is a quick rebuttal to the 4 strands of news:

  1. The Linux Foundation joins Microsoft (not a slip): Microsoft paid half a million dollars for over a hundred puff pieces (in English alone) and lots of leverage over Linux, including a distraction from the patent wars it wages.
  2. The GNU/Linux crowd gets a proprietary software database it neither wants nor needs: This might be useful when Microsoft tries to infiltrate GNU/Linux deployments like the one in Munich, later boasting better integration with Windows than with GNU/Linux (same for running Bash/Ubuntu under Windows 10).
  3. Google and .NET: Microsoft accepts that it lost the mobile wars and also lost developers, so it tries ever more desperately to spread .NET and/or Mono.
  4. Tizen/Samsung and .NET: As above.

That's about all it means. Below is the raw PR, which is intended to sometimes (it doesn't always work) mislead the reader, having misled the writers/journalists.

Related/contextual items from the news:

  1. Microsoft demonstrates its commitment to open source by joining Linux Foundation [Ed: Microsoft advocacy sites (often paid-for nonsense) like to pretend to themselves that Microsoft is now a good citizen, not racketeer. iophk: “You’ve probably seen links about LF joining Microsoft so I won’t add them. It would have been news if Microsoft joined OIN.”]
  2. Microsoft joins The Linux Foundation as a Platinum member [Ed: How MS advocacy sites put it; the larger payment (like political 'donation') was inevitable. To quote Benjamin Henrion, "Microsoft depends so much on taxing Linux via its dubious software patents that they have decided to join the Linux Foundation #corruption"]
  3. Microsoft now a Platinum Member at Linux Foundation and .NET foundation has Google onboard
  4. Microsoft joins the Linux foundation and blows everyone’s mind
  5. Microsoft And Linux Working On Advance Open Source Project Development, SQL Server And Azure App Service
  6. Microsoft and Linux Collaborates For Open-Source Game; As Rivals Unite, How Could Linux Benefit From This?
  7. Microsoft joins Linux Foundation as it continues to embrace open source
  8. Microsoft join hands with Linux Foundation as platinum member
  9. Microsoft joins the Linux Foundation as a Platinum member
  10. Microsoft Becomes a Member of The Linux Foundation
  11. Is Google crashing the Microsoft open source party?
  12. Microsoft: SQL Server for Linux is the real deal
  13. Microsoft doubles down on Linux love, joins foundation
  14. Microsoft joins the Linux Foundation, launches test build of Visual Studio for Mac
  15. Microsoft makes open source commitment with new partnerships involving Google, Linux, Samsung
  16. Microsoft joins Linux Foundation as a Platinum Member
  17. Microsoft joins Linux Foundation, Open-Source development to get major boost
  18. Microsoft joins Linux Foundation at Platinum Partner
  19. After OpenAI Partnership, Microsoft Joins The Linux Foundation To Dive Deeper Into Open-Source Code
  20. Microsoft is joining the Linux Foundation
  21. Microsoft Joins Linux Foundation, Bets on Open Cloud Computing
  22. Microsoft Shows Linux Love by Joining the Linux Foundation
  23. Loves spreads, new Microsoft SQL Server now previewed on Ubuntu
  24. Microsoft joins the Linux Foundation, no really
  25. Linux Academy Partners with Microsoft Visual Studio Dev Essentials Program
  26. Microsoft Becomes Linux Foundation Platinum Member, The Last Leaf has Fallen
  27. Microsoft joins the Linux Foundation, confirms commitment to open source development
  28. Microsoft has joined the Linux foundation
  29. Microsoft Joins Linux Foundation, After Calling Linux a 'Cancer'
  30. Microsoft Drops Tech Bombshell As It Joins Linux Foundation
  31. Microsoft partners with the Linux Foundation
  32. Microsoft and Google bury the hatchet in one small way
  33. Microsoft Joins the Linux Foundation As Everyone Now Loves Open Source
  34. Microsoft is the Platinum member of Linux Foundation
  35. Linux Foundation Gets a Surprising New Member: Microsoft
  36. SQL Server joins the Linux party, new preview comes to Linux and Docker
  37. Microsoft joins the Linux Foundation as a Platinum member, Google joins .Net community
  38. Microsoft joins Linux Foundation that promotes open-source technology
  39. Microsoft SQL Server Supports Linux
  40. Cricket Australia to adopt Microsoft’s team and player performance platform
  41. Microsoft announces association with Linux Foundation with Platinum membership
  42. Microsoft joins The Linux Foundation at highest membership tier
  43. Microsoft Joins Linux Foundation As Platinum Member And Releases Ports
  44. Microsoft Embraces Open Source, Joins Linux Foundation
  45. As Microsoft joins Linux, Google shakes hands with the .NET Foundation
  46. Microsoft joined the Linux foundation as a platinum member because of Cloud Services
  47. Microsoft, Google, and Samsung Bury the Hatchet with New Partnerships
  48. Microsoft, Google, Samsung Team Up In Open Source Development
  49. Microsoft surprises by joining Linux, 15 years after calling it a ‘cancer’
  50. Microsoft joins Linux Foundation in another nod to open-source code
  51. Microsoft officially joins the Linux league of open source contributors
  52. After Microsoft joins Linux, Google Cloud joins .NET Foundation
  53. Google signs on to the .NET Foundation
  54. Microsoft Joins Linux Foundation
  55. Microsoft’s .NET Foundation Now Includes Google
  56. Microsoft Joins The Linux Foundation In Latest Open Source Commitment
  57. Microsoft joins The Linux Foundation; takes on Oracle
  58. Microsoft Joins The Linux Foundation to Boost Open Source Software Ecosystem
  59. Microsoft has officially joined the Linux Foundation

Linux Foundation Commits Suicide as Microsoft E.E.E. Takes a Leap Forward

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Linux

I have covered Microsoft's interference with FOSS for over a decade and carefully studied even pertinent antitrust documents. I know the company's way of thinking when it comes to undermining their competition, based on internal communications and strategy papers. Even days ago we got this in the news.

The pattern of embrace and extend (to extinguish) -- all this while leveraging software patents to make Linux a Microsoft cash cow or compel OEMs to preinstall privacy-hostile Microsoft software/apps with proprietary formats (lockin) -- never ended. What I see in the Linux Foundation right now is what I saw in Nokia 5 years ago and in Novell 10 years ago -- the very thing that motivated me to start Boycott Novell, a site that has just turned 10 with nearly 22,000 blog posts.

It is a saddening day because it's a culmination, after years of Microsoft 'micro' payments to the Linux Foundation (e.g. event sponsorship in exchange for keynote positions), which will have Microsoft shoved down the throats of GNU/Linux proponents and give an illusion of peace when there is none, not just on the patent front but also other fronts (see what Microsoft's partner Accenture is doing in Munich right now). The links below are a complete list of the bad (in my view very bad) news.

"We need to slaughter Novell before they get stronger….If you’re going to kill someone, there isn’t much reason to get all worked up about it and angry. You just pull the trigger. Any discussions beforehand are a waste of time. We need to smile at Novell while we pull the trigger."

--Jim Allchin, Microsoft's Platform Group Vice President

In the news today:

Subsonic 5.1 Media Streamer Released, Install In Ubuntu/Linux Mint

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Linux


Subsonic 5.1 Released, Install In Ubuntu/Linux Mint

Subsonic is a nice free, multi-platform web basedmedia streamer, make large collection of music handling easy. You can share music with your frineds or stream your favorite music anywhere. You can stream to multiple players simultaneously.
 
 
 
 

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Audiocasts/Shows: Open Source Security Podcast, Linux Action News, and SMLR

Review: Artix Linux in 2021

Artix Linux is a fork (or continuation as an autonomous project) of the Arch-OpenRC and Manjaro-OpenRC projects. Artix Linux offers a lightweight, rolling-release operating system featuring alternative init software options, including OpenRC, runit, and s6. The distribution is available in many editions, including Base, Cinnamon, LXDE, LXQt, MATE, KDE Plasma and Xfce. With all of the desktop options, combined with the available init choices, there are 21 editions, not including community spins from which to choose. All editions appear to be built for 64-bit (x86_64) machines. Picking randomly, I selected Artix's Plasma edition featuring the runit init software. The download for this edition is is 1.3GB. Browsing the other editions it looks like most flavours are about 1.1GB to 1.3GB in size, though the minimal Base edition is a compact 618MB. The project's live media boots to the KDE Plasma desktop. On the desktop we find multiple documentation and README icons. There is also an icon for launching the system installer. The default layout places a panel at bottom of the screen where we can find the application menu and system tray. The default wallpaper is a soft blue while the theme for windows and menus is dark with high contrast fonts. [...] Artix Linux is one of those distributions I really enjoy using and yet struggle to review in a meaningful way because it doesn't really go out of its way to introduce new or exciting features and everything works smoothly. The distribution is wonderfully easy to install, offers top-notch performance, and is unusually light on resources. Artix is somewhat minimal, but still ships enough software to be immediately useful right out of the gate. We can browse the web, install packages, view files, and play videos. Meanwhile the application menu isn't cluttered with a lot of extras. The developers clearly expect us to install the functionality we need, while doing a really good job of providing enough for the desktop environment to feel base-line useful right from the start. Artix does a nice job of balancing performance and functionality while also juggling ease of use against not getting in the way. There is a little documentation, but no initial welcome screen or configuration wizards that might distract the user. The one piece I felt was missing was a graphical package manager which would have made it easier to build the extra functionality I wanted on top of the base distribution. However, that one piece aside, I felt as though Artix was really well designed and put together, at lease for someone like me. It's not a distribution geared toward beginners, it's not a "first distro". It is a bit minimal and requires command line knowledge. However, for someone with a little experience with Linux, for someone who doesn't mind the occasional trip to the command line or installing new applications as needed, then Artix provides an excellent experience. It's fast, light, looks (in my opinion) great with the default theme, and elegantly walks the line between minimalism and having enough applications ready to go out of the box to be immediately useful. I'm unusually impressed with how smooth and trouble-free my experience was with this distribution and the fact it offers such a range of desktop and init diversity is all the more appealing. Read more

Alpine Linux Review: Ultimate Distro for Power Users

Alpine Linux is gathering a lot of attention because of its super-small size and focus on security. However, Alpine is different from some of the other lightweight distros we covered on FOSSLinux. It isn’t your typical desktop distribution as it is terminal-based like Arch and is marketed as a “general purpose distro.” It is currently widely adopted as a Docker container thanks to its ultra-small footprint. However, it can be used for all sorts of Linux deployments that benefit from small, resource-efficient Linux distros. Now, that statement might feel too generic. But don’t worry, as we have put together an in-depth and comprehensive review of Alpine Linux, giving you a detailed look at what it has under the hood and how to use it. As such, by the end, you should have a clear understanding of whether you should consider Alpine Linux as your next Linux distro. So without further ado, let’s dive in. Read more

Programming Leftovers

  • How to manipulate strings in bash

    Without explicit support for variable types, all bash variables are by default treated as character strings. Therefore more often than not, you need to manipulate string variables in various fashions while working on your bash script. Unless you are well-versed in this department, you may end up constantly coming back to Google and searching for tips and examples to handle your specific use case. In the spirit of saving your time and thus boosting your productivity in shell scripting, I compile in this tutorial a comprehensive list of useful string manipulation tips for bash scripting. Where possible I will try to use bash's built-in mechanisms (e.g., parameter expansion) to manipulate strings instead of invoking external tools such as awk, sed or grep. If you find any missing tips, feel free to suggest it in the comment. I will be happy to incorporate it in the article.

  • Python Generators

    Python generators are very powerful for handling operations which require large amount of memory.

  • We got lucky

    If you’re having enough production incidents to be able to evaluate your preparation, you’re probably either unlucky or unprepared ;) If you have infrequent incidents you may be well prepared but it’s hard to tell. Chaos engineering experiments are a great way to test your preparation, and practice incident response in a less stressful context. It may seem like a huge leap from your current level of preparation to running automated chaos monkeys in production, but you don’t need to go straight there. Why not start with practice drills? You could have a game host who comes up with a failure scenario. You can work up to chaos in production.

  • React Testing Library – Tutorial with JavaScript Code Examples

    This post will help you to learn what React Testing Library is, and how you can use it to test your React application. This tutorial will assume you already know some basic JavaScript and understand the basics of how React works. React Testing Library is a testing utility tool that's built to test the actual DOM tree rendered by React on the browser. The goal of the library is to help you write tests that resembles how a user would use your application, so that you'll have more confidence that your application work as intended when a real user do use it.

  • Why I Moved From Ops to DevOps (and why you might want to)