Linux

Quick Emulator (QEMU) is the main component of the QEMU/KVM virtualization technology suit. It provides hardware virtualization and processor emulation. QEMU runs in userspace and, without the need for kernel, drivers can still provide fast system emulation. QEMU supports two operating modes: Full system emulation, where QEMU emulates an entire computer system, including the CPU […]

A new command that was introduced in systemd-based distributions that enables you to manage many aspects of time is timedatectl. When used without any arguments, this command shows detailed information about the current time and date. It also displays the time zone your system is in, in addition to information about the use of NTP […]

MPI is not a programming language. MPI defines a set of library routines that can be called from C and Fortran programs. MPI programs typically employ a single-program, multiple-data approach. Multiple instances, or MPI ranks, of the same program run concurrently. Each rank computes a different part of the larger problem and uses MPI to […]

KDE Plasma Workspaces is a popular graphical desktop environment for Linux-based systems. Once you have installed the “KDE Plasma Workspaces package group”, you can start the desktop environment using startkde. When you’re done using KDE and log out of the desktop, you’ll be returned to the console: # startkde To configure the system to automatically […]

The Windows Volume Shadow Copy Service (VSS) allows for backups of files, even protected system files, to be made while the operating system is running. Windows uses VSS to make periodic differential backups of the blocks of data on NTFS volumes. These backups are called volume shadow copies and are stored in the System Volume […]

Using ifrename is the easiest way to make sure your network cards keep the correct configurations on Linux systems. Usually, interfaces will come up in the same order, and the kernel will assign them the same names, but sometimes this can change (e.g., after a kernel upgrade or adding another network card). Your nice Linux […]

The GNU autoreconf tool, updates configure scripts by running autoconf, autoheader, aclocal, automake, and libtoolize in specified directories and subdirectories. This command is seldom invoked manually. It is usually called automatically from other autoconf tools. If you encounter below error: autoreconf: command not found you may try installing below package as per your choice of […]

GoBuster is a tool that was built in the Go language, which can be used for brute forcing directories as well as brute forcing subdomains. Since GoBuster is built on Go, we first need to install Go first and then install or configure the GoBuster package. Up until my discovery of Gobuster, I was using […]

uflash is a utility for flashing the BBC micro:bit with Python scripts and the MicroPython runtime. The BBC micro:bit board is the easiest alternative board to use with MicroPython. This is due to two software applications – a desktop application named Mu, and a command-line tool named uFlash. Mu is a full editor that you […]

IDLE is an integrated development environment that is bundled with the Windows and macOS Python distributions (it’s readily available in most Linux distributions as well, usually as IDLE or IDLE3). IDLE is written in Python using Tkinter, and it provides us with not only an editing environment for Python, but also a great example of […]