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À partir d’avant-hiernixCraft

How to upgrade FreeBSD 13.1 to 13.2 release

Par : Vivek Gite

The FreeBSD Release Engineering Team is announcing the availability of FreeBSD version 13.2-RELEASE on 11/April/2023. It is the third release of the stable/13 branches. I updated my FreeBSD version 13.1 to 13.2 using the CLI over an ssh-based session. Here are my quick notes.

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FreeBSD 13 released: Here is how to upgrade FreeBSD 12 to 13

Par : Vivek Gite

FreeBSD 13 verfication
The FreeBSD project released FreeBSD version 13. The new version comes with updated software and features for a wild variety of architectures. The latest release provides performance improvements and better support for FreeBSD. One can benefit greatly using an upgraded version of FreeBSD. Let us see what's new and quickly update FreeBSD 12 to 13 using the CLI.

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cpufetch – awesome CPU architecture info tool for Linux and macOS

Par : Vivek Gite

AMD cpufetch
Typically we use the lscpu command or /proc/cpuinfo command on Linux to check CPU information. I recently found another simplistic yet fancier CPU architecture fetching tool inspired by neofetch, pfetch or screenfetch. Let us see how to install cpufetch on Linux, macOS, Android, and Windows to fetch CPU details.

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How to install ncdu on Linux / Unix to see disk usage

Par : Vivek Gite

Running ncdu on FreeBSD Unix server
The du (disk usage) command summarizes directory trees' sizes, including all of their contents and individual files' sizes on Linux and Unix-like systems such as macOS. It helps track down space hogs. In other words, we can list directories and files that consume large amounts of space on a hard disk drive. Let us see the ncdu command, a curses-based version of the well-known du command.

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The post How to install ncdu on Linux / Unix to see disk usage appeared first on nixCraft.

Linux Desktop Fun: Bonsai tree generator for CLI lovers

Par : Vivek Gite

cbonsai
Bonsai (盆栽) is nothing but planting in a try. It is old age Japanese art of growing small trees in pots. Now you can do that with your Linux or Unix terminal easily for fun and profit. Let us look into the Bonsai tree generator called cbonsai created in Clang and Bash.

The post Linux Desktop Fun: Bonsai tree generator for CLI lovers appeared first on nixCraft.

How to unlock LUKS using Dropbear SSH keys remotely in Linux

Par : Vivek Gite


On Linux, we encrypt our partitions and entire disk using Linux Unified Key Setup-on-disk-format (LUKS) for security and privacy reasons. We unlock LUKS protected disk by providing a passphrase at boot time. You need to be in front of your computer or use a remote console to open the encrypted disk under Linux at boot time. However, if your system is in the basement, remote datacenter/office, or upstairs office, you won't able to unlock and boot your Linux box. We can use the Dropbear SSH server for LUKS encrypted Debian or Ubuntu or any other Linux distro via SSH to solve this problem. Let us see how to unlock LUKS using Dropbear SSH keys in Linux at boot time.

The post How to unlock LUKS using Dropbear SSH keys remotely in Linux appeared first on nixCraft.

Significant vulnerabilities that crippled IT world this decade (2010-2020)

Par : Vivek Gite

Significant vulnerabilities that crippled IT world this decade 2010-2020
The last ten years in the computer and IT security world are crippled with so many vulnerabilities. We saw massive cloud computing adoption and end-users using mobile devices with high speed 4G LTE networks. A threat actor may have exploited such weakness in modern computers and networks. Let us look into top vulnerabilities and the attack surface in this decade (2010-2020) that affected Linux/Unix, macOS, IT, cloud-computing, and computers in general.

The post Significant vulnerabilities that crippled IT world this decade (2010-2020) appeared first on nixCraft.

Top 6 awesome text editors for Linux and Unix command-line users/developers

Par : Vivek Gite

Awesome text editors for Linux unix macos command line CLI users
A text editor is an essential tool for both developers and sysadmin, especially when dealing with text based sessions. We use a text editor to create, edit, and update text. A text editor is used for many things. Some use them to write documents. Some people write code and others use it to edit Linux and Unix configuration files locally or remote servers running in the cloud. Let us see the top 6 text editors for Linux, macOS, and Unix command-line users/developers.

The post Top 6 awesome text editors for Linux and Unix command-line users/developers appeared first on nixCraft.

How to change LUKS disk encryption passphrase in Linux

Par : Vivek Gite

How to change LUKS disk encryption passphrase in Linux
We use encryption to protect mobile devices. For instance, I always use LUKS disk encryption to protect all files stored on my SSD. Dm-crypt (Cryptsetup and LUKS) open-source disk encryption is transparent disk encryption and a great way to keep your data secure. However, changing passphrase is a bit of a challenge for new Linux users and developers. This step-by-step guide explains how to find LUKS slots assigned to you and change your passphrase on a Debian/Ubuntu, CentOS/RHEL, OpenSUSE/SUSE other Linux distros.

The post How to change LUKS disk encryption passphrase in Linux appeared first on nixCraft.

bpytop – Awesome Linux, macOS and FreeBSD resource monitor

Par : Vivek Gite

byptop
The bashtop is an impressive Linux resource monitor that shows usage and stats for processor, memory, disks, and network. However, it suffers from bash itself, and cross-platform support is a nightmare. Now we have the Python port of bashtop. We can use a resource monitor that shows usage and stats for CPU, RAM, SSD (hard disk), network, and processes information in a lovely format.

The post bpytop – Awesome Linux, macOS and FreeBSD resource monitor appeared first on nixCraft.

GNU/Bash 5.1 released with the random ${SRANDOM} number engine

Par : Vivek Gite

Current GNU/Bash maintainer Chet Ramey announced the latest major release, Bash 5.1, on December 7th, 2020. Bash is the default shell on many Linux distros and popular among developers, especially those working with Linux containers. It is the fifth major release of bash. It came with a new enhanced random number generation and added a new variable called SRANDOM. Let us see how to install and use newly released GNU/BASH 5.1 on Linux.

The post GNU/Bash 5.1 released with the random ${SRANDOM} number engine appeared first on nixCraft.

tmpmail – A temporary email right from Linux / Unix terminal

Par : Vivek Gite

temp email
Are you looking to send a temporary email right from your Linux or Unix terminal? Look no further. Try tmpmail command-line utility that allows you to generate a temporary email address for receiving emails. Underneath the script uses 1secmail's API to receive the emails.

The post tmpmail – A temporary email right from Linux / Unix terminal appeared first on nixCraft.

How to backup and restore LUKS header on Linux

Par : Vivek Gite

LUKS backup and restore on Linux
Previously I explained how to encrypt Linux partitions or disk with the LUKS (Linux Unified Key Setup)/dm-crypt. In this quick blog post, I will explain how to backup and restore LUKS header for emergency purposes. Backup is useful for recovering from misconfigurations, corrupted headers or forgotten passphrase or unknown password.

The post How to backup and restore LUKS header on Linux appeared first on nixCraft.

10 Linux commands to know the system

Par : Vivek Gite

10 Linux command to know the system
Here are 10 Linux command to know the system and increase your productivity quickly.

The post 10 Linux commands to know the system appeared first on nixCraft.

Linux Slimbook Laptop with AMD Ryzen 4000 released

Par : Vivek Gite

Slimbook
KDE project and Slimbook released a new Linux ultrabook with AMD Ryzen 4000 CPU that comes with eight cores, 16 threads, and a Plasma desktop. Let us look into laptop hardware specifications and other information.

The post Linux Slimbook Laptop with AMD Ryzen 4000 released appeared first on nixCraft.

CentOS Linux 8.2 (2004) released and here is how to upgrade it

Par : Vivek Gite

CentOS Linux 8.2 (2004) released. It is a Linux distribution derived from RHEL (Red Hat Enterprise Linux) 8.2 source code. CentOS was created when Red Hat stopped providing RHEL free. CentOS 8.2 gives complete control of its open-source software packages and is fully customized for research needs or for running a high-performance website without the need for license fees. Let us see what's new in CentOS 8.2 (2004) and how to upgrade existing CentOS 8.1.1199 server to 8.2.2004 using the command line.

The post CentOS Linux 8.2 (2004) released and here is how to upgrade it appeared first on nixCraft.

bat Linux command – A cat clone with written in Rust

Par : Vivek Gite

bat Linux command in action on my Ubuntu desktop
The cat (short for concatenate) command is one of the most frequently used flexible commands on Linux and Unix-like operating systems. Say hello to bat Linux command, which is a cat command written in Rust programming language. The bat command comes with syntax highlighting, git integration, and works as is a drop-in cat command replacement. Let us see how to install bat on Linux and Unix system for fun and profit.

The post bat Linux command – A cat clone with written in Rust appeared first on nixCraft.

Letsencrypt is revoking certificates on March 4

Par : Vivek Gite

Let's Encrypt is a non-profit certificate authority that provides X.509 certificates for Transport Layer Security (TLS) encryption free of cost. The TLS certificate is valid for 90 days only. However, Due to the bug, they need to revoke many (read as "certain") Let’s Encrypt TLS/SSL certificates. Let us see how to find out if you are affected by this bug and how you can fix it to avoid any problems with your TLS/SSL certificates.

The post Letsencrypt is revoking certificates on March 4 appeared first on nixCraft.

System76 Announces AMD Threadripper Linux Workstations

Par : Vivek Gite

System76 is a Denver, Colorado-based American computer manufacturer. They are specializing in the sale of Linux powered laptops, desktops, and servers. Last year System76 announced two Intel laptops with Coreboot, which as an alternative to proprietary BIOS using Intel 10th Gen CPUs. Now, System76 updated its Linux workstations line and ship with the latest AMD chips for CPU-intensive workloads. But how much of a difference can 64 cores AMD CPU make?

The post System76 Announces AMD Threadripper Linux Workstations appeared first on nixCraft.

Linux / Unix desktop fun: gti get jeep/car when you mistype git

Par : Vivek Gite

One of the most common mistakes developers and ops people make is typing gti instead of git command. I set an alias i.e. alias gti=git, but then you may miss out on the jeep/car on your screen.
gti get jeep or car on linux or unix screen when you mistype git

The post Linux / Unix desktop fun: gti get jeep/car when you mistype git appeared first on nixCraft.

CentOS Linux 8.1 (1911) released and here is how to upgrade it

Par : Vivek Gite

CentOS Linux 8.1 (1191) released. It is a Linux distribution derived from RHEL (Red Hat Enterprise Linux) 8.1 source code. CentOS was created when Red Hat stopped providing RHEL free. CentOS 8.1 gives complete control of its open-source software packages and is fully customized for research needs or for running a high-performance website without the need for license fees. Let us see what's new in CentOS 8.1 (1911) and how to upgrade existing CentOS 8.0.1905 server to 8.1.1911 using the command line.

The post CentOS Linux 8.1 (1911) released and here is how to upgrade it appeared first on nixCraft.

Kubuntu Linux Focus Laptop Announced

Par : Vivek Gite

Kubuntu is a free and open-source version based upon Ubuntu Linux. Kubuntu flavor uses KDE instead of GNOME desktop. Now, the Kubuntu project announced the first authorized laptop called Kubuntu Focus in collaboration with MindShareManagement Inc, and Tuxedo Computers. Let us see technical specs and other information.

The post Kubuntu Linux Focus Laptop Announced appeared first on nixCraft.

killersheep – Silly game for Vim version 8.2

Par : Vivek Gite

Vim is my favorite text editor and version 8.2 released. The new version includes support for popup windows and text properties. Popup windows can be used for many purposes. For example, a list of choices can be displayed, where the user selects an entry with keys or with the mouse. There is also a new vim game released named as killersheep to show you new capabilities of Vim. Let us see how to install and play killersheep.
killersheep - Silly game for vim version 8.2

The post killersheep – Silly game for Vim version 8.2 appeared first on nixCraft.

How to add bash auto completion in CentOS 8 Linux

Par : Vivek Gite

I set up a new cloud server, but my auto-completion of bash shell commands are not working. How do I enable autocomplete feature in CentOS 8 (CentOS Enterprise Linux 8)? How do I write simple bash completion code in CentOS 8?

The post How to add bash auto completion in CentOS 8 Linux appeared first on nixCraft.

Debian Linux 10.9 released and here is how to upgrade it

Par : Vivek Gite


The Debian GNU/Linux project has released an updated version of its stable Linux distribution Debian 10 ("buster"). You must upgrade to get corrections for security problem as this version made a few adjustments for the severe issue found in Debian version 10.8. Debian is a Unix-like (Linux distro) operating system and a distribution of Free Software. It is mainly maintained and updated through the work of many users who volunteer their time and effort. The Debian Project was first announced in 1993 by Ian Murdock.

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Ubuntu Linux 19.10 released: New Features and Download

Par : Vivek Gite

Ubuntu Linux 19.10 released and will be supported for nine months till July 2020. It is codenamed as Eoan Ermine. The newer release comes with updated Linux kernel 5.3.x, NVIDIA drivers for gaming or AI programming, ZFS on root, OpenStack Train, and more. Let us see what's new in Ubuntu 19.10 and how to upgrade 19.04 to 19.10 using the command-line options.
Ubuntu Linux 19.10 desktop

The post Ubuntu Linux 19.10 released: New Features and Download appeared first on nixCraft.

Modern Linux Laptops with Coreboot Firmware From System76

Par : Vivek Gite

Are you looking for modern Linux laptops with coreboot? The wait is over. Coreboot is a free and open-source software. The coreboot project aimed at replacing the proprietary BIOS firmware and blobs. System76 recently announced two Intel laptops with Coreboot, which as an alternative to proprietary BIOS. These laptops are using Intel 10th Gen CPUs.

The post Modern Linux Laptops with Coreboot Firmware From System76 appeared first on nixCraft.

CentOS Linux 8 released: New Features and Download

Par : Vivek Gite

CentOS Linux 8 released. It is a Linux distro derived from RHEL 8. CentOS was created when Red Hat stopped providing RHEL free. These days CentOS mostly used on servers, HPC, and desktop. CentOS is a high-quality Linux distribution. It gives complete control of its open-source software packages and is fully customized for research needs or for running a high-performance website without the need for license fees. Let us see what's new in CentOS 8.

The post CentOS Linux 8 released: New Features and Download appeared first on nixCraft.

CentOS Linux 7.7 released and here is how to update it

Par : Vivek Gite

The CentOS Linux project has released an updated version of its stable Linux distribution CentOS Linux 7.7. You must upgrade to get corrections for security problem as this version made a few adjustments for the severe issue found in CentOS 7.6. CentOS is a Linux distro that is mainly maintained and updated through the work of many users who volunteer their time and effort. It is based upon RHEL 7.7 upstream source code.

The post CentOS Linux 7.7 released and here is how to update it appeared first on nixCraft.

Linux Kernel 5.3 released and here is how to install it

Par : Vivek Gite

Linux kernel version 5.3 released. This version includes many improvements including support for AMD Navi GPU, support for new IPv4 addresses in the 0.0.0.0/8 range, the lightweight hypervisor ACRN for embedded IoT devices and much more.

The post Linux Kernel 5.3 released and here is how to install it appeared first on nixCraft.

Dell announces new Linux XPS 13 developer edition 7390 laptop

Par : Vivek Gite

Dell recently announced the new XPS 13 developer edition powered by Ubuntu Linux and Intel's 10th generation Comet Lake CPUs. The new device will soon be available in the US, Canada, and European markets. It is good news for both developers and Linux enthusiast who wants Linux laptop with preloaded Ubuntu operating systems. Let us see new Linux XPS 13 developer edition specs and other information.

The post Dell announces new Linux XPS 13 developer edition 7390 laptop appeared first on nixCraft.

Raspberry PI 4 Released – Complete specs and pricing

Par : Vivek Gite

A new version of the Raspberry PI 4 model has been released, and it is incredible update over the older model. A few years ago, I got Raspberry Pi 3 . It was my first 64-bit ARM board. It came with a 64-bit CPU. Here are the complete specs for an updated 64-bit credit card size Raspberry PI 4 desktop computer level of performance.

The post Raspberry PI 4 Released – Complete specs and pricing appeared first on nixCraft.

Ubuntu 18.04.2 LTS released and here is how to upgrade it

Par : Vivek Gite

The Canonical LTD has released an updated version of its long term support (LTS) Linux distribution Ubuntu Linux 18.04.02. You must upgrade to get corrections for security problem as this version made a few adjustments for the severe issue found in Ubuntu version 18.04.02. The Ubuntu LTS enablement (also called HWE or Hardware Enablement) stacks provide newer kernel and X support for existing Ubuntu LTS releases. These enablement stacks can be installed manually but are also available when installing with Ubuntu LTS point release media. These newer enablement stacks are meant for desktop and server and even recommended for cloud or virtual images.

The post Ubuntu 18.04.2 LTS released and here is how to upgrade it appeared first on nixCraft.

Firefox is now placing ads and here is how to disable it

Par : Vivek Gite

Firefox is now placing ads
Firefox user discovered that Mozilla Firefox is displaying ads on the home or new tab page. When you open Firefox on your desktop, an advertisement banner at the bottom page displayed. The advertisement read as follows:

The post Firefox is now placing ads and here is how to disable it appeared first on nixCraft.

2018: Top 10 biggest news stories from Linux and open source world

Par : Vivek Gite

Biggest news stories from Linux and open source world in 2018
The year 2018 turn out to be big newsmaker for Linux and open source world. The most important acquisition in the open source world, Deepfakes, important security flows in CPUs, and the Facebook scandal all happened in 2018. Vivek Gite picks top 10 most significant and biggest news stories from Linux and open source world that rock IT world.

The post 2018: Top 10 biggest news stories from Linux and open source world appeared first on nixCraft.

FreeBSD 12 released: Here is how to upgrade FreeBSD 11 to 12

Par : Vivek Gite

The FreeBSD project announces the availability of FreeBSD 12.0-RELEASE. It is the first release of the stable/12 branch. The new version comes with updated software and features for a wild variety of architectures. The latest release provides performance improvements and better support for FreeBSD jails and more. One can benefit greatly using an upgraded version of FreeBSD.

The post FreeBSD 12 released: Here is how to upgrade FreeBSD 11 to 12 appeared first on nixCraft.

Microsoft is building Edge on top of Chromium (open source version of Google Chrome)

Par : Vivek Gite

It is official now. Microsoft is throwing away old code base of Edge browser and making next version of Edge browser on top of Chromium. The open source project behind Google Chrome is known as Chromium. Microsoft is building a Chromium browser to replace Edge on Windows 10 on both x86 and ARM-based systems.

The post Microsoft is building Edge on top of Chromium (open source version of Google Chrome) appeared first on nixCraft.

How to add bash auto completion in RHEL 8 (Red Hat Linux)

Par : Vivek Gite

I set up a new RHEL 8 VM from cloud images, but my auto-completion of bash shell commands are not working. How do I enable autocomplete feature in RHEL 8 (Red Hat Enterprise Linux 8)? How do I write simple bash completion code in RHEL 8?

The post How to add bash auto completion in RHEL 8 (Red Hat Linux) appeared first on nixCraft.

Raspberry $25 Pi 3 Model A+ Released – Complete specs and pricing

Par : Vivek Gite

The Raspberry Pi is a small single-board computer (SBC) developed by the Raspberry Pi Foundation. It supposes to promote the teaching of computer science, programming for kids and in developing countries. The new Raspberry Pi 3 Model A+ comes with 1.4GHz clock speed, 5GHz wireless networking and improved thermals of Raspberry Pi 3B+ in a smaller form factor. It costs $25.

The post Raspberry $25 Pi 3 Model A+ Released – Complete specs and pricing appeared first on nixCraft.

KDE has been deprecated in RHEL 7.6 and future version of RHEL

Par : Vivek Gite

Red Hat Enterprise Linux is well known to set defaults across the industry. For example, RHEL pushed systemd so hard that all other Linux distro adopted for good or bad reasons. Now Red Hat announced that KDE Plasma Workspaces (KDE) been deprecated from RHEL 7.6 and all future version of RHEL.

The post KDE has been deprecated in RHEL 7.6 and future version of RHEL appeared first on nixCraft.

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