Erasing a BD-RE, DVD-RW, or CD-RW disk on a Linux system can be as easy as entering one line command using the wodim utility. In this tutorial, you will see how to erase a rewritable disk (Blu Ray, DVD, or CD) on Linux via command line.
Commands
Remove or substitute space within a file name
The purpose of this tutorial is to show various methods on how to remove or substitute spaces within a file name. Some tools on a Linux system may not work properly with files that contain spaces, which would give some users motivation to replace the white space with underscores or just delete them completely, for example. Manipulating files without white space is much easier, as you do not have to worry about escaping the file name each time. In this tutorial, you will see how to remove or substitute the spaces in file names in Linux.
3 Methods to install PyCharm Community Edition on Linux
PyCharm is a professional Python IDE (Integrated Development Environment) developed by JetBrains, which supports a lot of features like code completion, refactoring, debugging, etc. Two versions of the IDE exist: the “Professional” version, which must be purchased, and the free, “Community” version, which is based on open source software, and can be downloaded and installed free of charge. Various methods can be used to install the IDE on Linux.
journalctl command usage and examples on Linux
The journalctl command can be used to view all of the logs collected by systemd on a Linux system. This includes logs related to the system’s kernel, initrd, various services and applications, as well as systemd itself. The journalctl command makes querying all of these logs pretty painless, since systemd gathers and stores all these various logs in a central location for administrators to view.
How to send desktop notifications using notify-send
Every desktop environment on Linux has its own notification system which implements the Freedesktop notifications specifications. Some of them, like GNOME or KDE, use their own built-in notification systems which cannot be replaced; others like Xfce or Mate, use more modular components (Xfce notification daemon and Mate notification daemon, respectively). Desktop-independent notification systems also exist (dunst, for example): most of the time they are used on minimal setups (e.g. when using a plain window manager instead of full blown Desktop environments).
Linux commands: Top 20 most important commands you need to know
There are thousands of commands that you can learn to use on a Linux system, but most users will find themselves executing the same few commands over and over. For users looking for a way to get started, we have compiled 20 of the most important Linux commands you need to know. These commands are some of the most useful, common, and essential tools that you will need in order to administer your Linux system or perform everyday tasks.
How to backup gpg keys on paper
Having a reliable backup of our GPG (Gnu Privacy Guard) secret key is not optional: the key represents our identity, and loosing it could potentially be a disaster. Creating a backup of our keys and sub-keys is quite a simple thing to do using gpg, and the resulting files can be easily backed up on one or more devices. Electronic devices such USB drives or hard disks, however, tend to fail, and usually in the most inappropriate times; therefore as an extreme resort, we may want to print our keys to paper.
How to manage git repositories with Python
Neither Python nor Git need presentations: the former is one of the most used general-purpose programming language; the latter is probably the most used version control system in the world, created by Linus Torvalds himself. Normally, we interact with git repositories using the git binary; when we need to work with them using Python, instead, we can use the GitPython library.
Linux epoch time
Epoch time is a convention used on Unix and Linux systems that many applications rely on for calculating time between dates and other similar functions. Some Linux commands like date and perl have an epoch option built in. An epoch denotes the number of seconds that have passed since the date January 1st, 1970.
Linux Cheat Sheet
In this tutorial, we will list various practical Linux commands to be used only as a reference guide and by experienced Linux users. Not all Linux commands will be available on your system by default so consider installing the relevant package before use.
Pax command examples on Linux
pax is an archive utility somewhere between cpio and tar. This is just because it is independent of the specific archive format, and supports a wide variety of different archive formats. It can perform simple tasks as creating a compressed archive of a selected directory or it can as much easily create a daily incremental backup.
Introduction to terminal multiplexer Tmux
Tmux is a terminal multiplexer: it let us run and manage multiple terminal sessions from a single screen. This is specially useful when connecting to remote machines using ssh, since, among the other things, it allows us to keep processes started from those terminals running in the background when we disconnect from the session (or logout and close the remote secure shell altogether), letting us re-attach to it at a later time.