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Today's Howtos Today's Howtos Published on Tux Machines (http://www.tuxmachines.org) Home > content > today's howtos today's howtos By Roy Schestowitz Created 18/01/2021 - 8:19pm Submitted by Roy Schestowitz on Monday 18th of January 2021 08:19:44 PM Filed under HowTos [1] How to install Signal Private Messenger on Linux | FOSS Linux [2] Are you looking for an open-source messenger that respects your privacy? Here's how to install Signal Messenger on your Linux PC. We show the installation on popular Linux distros such as Ubuntu, Fedora, and Manjaro. UBlock Origin and custom filters - Mini tutorial [3] Several months ago, I wrote a review of UBlock Origin. It's a powerful, nerdy browser extension, available across the wider range of browsers out there, with the sacred purpose of making the Internet palatable for intelligent use. It does so by being a sophisticated adblocker and content blocker. Since, I've received requests for additional tutorials - and also found myself tackling a few real-world issues with somewhat overzealous content blocking. For example, on Bing images, if I clicked on an image, they would show up for a second, flicker and then disappear. Not consistently - but always with UBlock Origin active. So I used this opportunity to write a little guide on how to create custom filters. Let's have a look. Scribus 1.5.6.1 Available to Install via PPA in Ubuntu 20.04, 20.10 | UbuntuHandbook[4] For those prefer installing applications via apt method, the desktop publishing software Scribus 1.5.6 is finally made into PPA available for Ubuntu 20.04, Ubuntu 20.10, and Linux Mint 20. Scribus 1.5.6 was released a few months ago as the latest development release for the next major version 1.6.0. It feature apt-key Is Deprecated. How To Add OpenPGP Repository Signing Keys Without It On Debian, Ubuntu, Linux Mint, Pop!_OS, Etc. [5] This article explains how to securely add OpenPGP keys and third-party APT repositories on Debian, Ubuntu, and Linux distributions based on these, like Linux Mint, Pop!_OS, Elementary OS and so on, to replace the deprecated apt-key. When you try to add an APT repository key using apt-key on Debian, Ubuntu and Linux distributions based on these, you'll see the following message: "Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8))". The apt-key man page mentions that the "use of apt-key is deprecated, except for the use of apt-key del in maintainer scripts to remove existing keys from the main keyring". What's more, "apt-key will last be available in Debian 11 and Ubuntu 22.04." How to count lines of source code in Linux [6] For various reasons you may want to know in how many lines of code given open-source software is implemented. For example, you want to estimate the effort devoted to developing a particular open-source program. Or you want to gauge the size and complexity of a program before trying it. There is some controversy as to using source lines of code (SLOC) as a metric to determine the size of a software program, since existing programming languages differ greatly in terms of clarify and brevity. In any rate, if you would like to count the number of source code lines quickly and accurately, you can use a command-line tool called cloc (short for "Count Lines Of Code"). cloc is a Perl program that is dedicated to counting the number of lines of code. To estimate the size of codebase accurately, cloc automatically detects different types of programming/scripting languages, and discounts comment lines and blank lines based on the type appropriately. How to List Directory Contents on Linux - buildVirtual [7] When working with the Linux file system, its important to know some of the different ways you can list directory contents on Linux. This article will look at some of the commands you can use to list directory contents, which will work on whichever version of Linux you are using. These commands will also work to list directory contents on VMware ESXi. It will cover how to do a basic directory listing, how to list specific information such as file size and permissions, and how to sort and filter the directory list output. Let?s start by looking at the basic usage of the ls command, before moving onto some more advanced examples of how you can use ls to list directories and their contents. HowTos Source URL: http://www.tuxmachines.org/node/146614 Links: [1] http://www.tuxmachines.org/taxonomy/term/98 [2] https://www.fosslinux.com/45311/install-signal-private-messenger-on-linux.htm [3] https://www.dedoimedo.com/computers/ublock-origin-custom-filters.html [4] https://ubuntuhandbook.org/index.php/2021/01/scribus-1-5-6-available-install-ppa-ubuntu-20-04/ [5] https://www.linuxuprising.com/2021/01/apt-key-is-deprecated-how-to-add.html [6] https://www.xmodulo.com/how-to-count-lines-of-code.html [7] https://buildvirtual.net/how-to-list-directory-contents-on-linux/.
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