Published on Tux Machines (http://www.tuxmachines.org) Home > content > today's howtos today's howtos By Roy Schestowitz Created 18/01/2021 - 3:37pm Submitted by Roy Schestowitz on Monday 18th of January 2021 03:37:49 PM Filed under HowTos [1] Install Inkscape 1.0.2 In Ubuntu / LinuxMint / Debian | Tips On UNIX[2] Inkscape is a free and open-source professional vector graphics editor software that runs on Linux, Mac OS X, and Windows desktop computers. It is suitable for illustrators and web designers and it is an alternative to Adobe Illustrator. It supports many SVG features (markers, alpha blending, clones, etc..) and easy to use. How to enable PowerTools on CentOS 8 [3] The PowerTools repository, which is available on CentOS/RHEL 8, provides developer related tools and libraries. Some EPEL packages depend on packages available from PowerTools. Thus if you have set up the EPEL repository on your CentOS, it is recommended that you enable PowerTools as well. Install gscan2pdf 2.11.0 in Ubuntu / Linux Mmint [4] gscan2pdf a GUI tool used to produce PDF?s or DjVus from Scanned documents,gscan2pdf works on all Linux / BSD machines gscan2pdf team released a newer version 2.11.0 recently and yet to be updated in official Jeffrey Ratcliffe PPA for Ubuntu 20.04 and lower versions. This tutorial will be helpful for beginners to install gscan2pdf 2.11.0 in Ubuntu 20.10, Ubuntu 20.04, Linux Mint 20.1, and lower versions of Ubuntu and Linux Mint. How to set up WireGuard VPN server on Ubuntu 20.04 [5] Traditionally, VPN implementation has existed in two forms. In-kernel VPN implementation such as IPsec performs heavy-duty per-packet crypto processing in the kernel in a "bump-in- the-stack" fashion (i.e., between IP stack and the network drivers). This gives speed as there is no context switch between kernel and userspace during packet processing. But it comes with high management complexity in separate userspace control plane (e.g., IKE). An alternative form of VPN implementation is userspace TUN/TAP-based solutions such as OpenVPN, Tinc, n2n, where crypto processing is performed by a userspace VPN daemon. Naturally, these TUN/TAP-based VPN solutions have poor performance compared to IPsec mainly because network packets traverse the kernel and userspace boundary multiple times, resulting in frequent context switches and packet copies. Despite their performance disadvantage, userspace VPN solutions enjoy more popularty than the in-kernel counterpart due to their ease of use and configuration. How to create a lifecycle policy for an S3 Bucket on AWS [6] We can use the Lifecycle Policy to manage the objects in S3 Bucket so that they are stored cost-effectively throughout. An S3 Lifecycle Policy is a set of rules used to define actions that Amazon S3 applies to objects in the bucket. How to change the hostname on Ubuntu 20.04 LTS [7] In a Local Area Network (LAN) environment, computer systems need to communicate with each other based on their IP addresses. To learn and remember these IP addresses and sharing them when needed is a tricky business. In order to avoid such trouble, users tend to rename their system?s hostname for their own ease. The simpler hostnames will allow all computer users to coordinate easily without an exchange of large IP addresses. This whole scenario is quite related to the URLs and DNS server address, where the user is totally unaware of long addresses and simply use the URLs in their search engine. In this tutorial, I will show you two methods to change the hostname of an Ubuntu 20.04 system via the command line terminal and GUI. Users can opt either way to update the names and share them once they have finalized them. How To Delete Outdated Vagrant Boxes In Linux - OSTechNix [8] You might have downloaded several versions of Vagrant boxes and some of them might be pretty outdated! If they are no longer required, you can safely delete outdated Vagrant boxes in Linux as described in this brief guide. Check for outdated Vagrant boxes I have been using Vagrant for the past few months for testing purposes. Since Vagrant version 1.5, boxes support versioning. The Box Versioning allows the developers who make boxes to push updates or fixes and the users to easily update the underlying box. LHB Digest #21.02: Uptime Monitoring, Terminal Shortcuts, Linux Commands Tips and More[9] How To Install Java on Linux Mint 20 - idroot [10] In this tutorial, we will show you how to install Java on Linux Mint 20. For those of you who didn?t know, Java is a very popular language when it comes to programming. It is a common language for android development and other enterprise solutions. It was first released by Sun Microsystems in 1995. Many programs and scripts require Java to run it, but usually, Java is not installed by default on a VPS or Dedicated Server. building a simple KVM switch for 30€ | die-welt.net[11] Prompted by tweets from Lesley and Dave, I thought about KVM switches again and came up with a rather cheap solution to my individual situation (YMMY, as usual). As I've written last year, my desk has one monitor, keyboard and mouse and two computers. Since writing that post I got a new (bigger) monitor, but also an USB switch again (a DIGITUS USB 3.0 Sharing Switch) - this time one that doesn't freak out my dock \o/ However, having to switch the used computer in two places (USB and monitor) is rather inconvenient, but also getting an KVM switch that can do 4K@60Hz was out of question. Luckily, hackers gonna hack, everything, and not only receipt printers. There is a tool called ddcutil that can talk to your monitor and change various settings. And udev can execute commands when (USB) devices connect? You see where this is going? An introduction to hashing and checksums in Linux | Enable Sysadmin[12] Always wondered how to make use of a checksum? This introduction shows you what they mean, and how to use the proper tools to verify the integrity of a file. How to remove background microphone noise in Windows, Mac, Linux[13] Noisetorch is an open-source Linux application that allows you to create a virtual microphone that suppresses background noise. To filter out background noise in an application, simply select the virtual microphone instead of your regular microphone, and the application will filter out background noise. Craig Small: Percent CPU for processes [14] The ps program gives a snapshot of the processes running on your Unix-like system. On most Linux installations, this will be the ps program from the procps project. While you can get a lot of information from the tool, a lot of the fields need further explanation or can give ?wrong? or confusing information; or putting it another way, they provide the right information that looks wrong. One of these confusing fields is the %CPU or pcpu field. You can see this as the third field with the ps aux command. You only really need the u option to see it, but ps aux is a pretty common invokation. HowTos Source URL: http://www.tuxmachines.org/node/146604 Links: [1] http://www.tuxmachines.org/taxonomy/term/98 [2] https://www.tipsonunix.com/2021/01/install-inkscape-1-0-2-in-ubuntu-linuxmint-debian/ [3] https://www.xmodulo.com/how-to-enable-powertools-centos.html [4] https://www.tipsonunix.com/2021/01/install-gscan2pdf-2-11-0-in-ubuntu-linux-mmint/ [5] https://www.xmodulo.com/wireguard-vpn-server-ubuntu.html [6] https://www.howtoforge.com/how-to-create-a-lifecycle-policy-for-an-s3-bucket-on-aws/ [7] https://vitux.com/ubuntu-hostname/ [8] https://ostechnix.com/how-to-delete-outdated-vagrant-boxes-in-linux/ [9] https://linuxhandbook.com/newsletter/21-02/ [10] https://idroot.us/install-java-linux-mint-20/ [11] https://www.die-welt.net/2021/01/building-a-simple-kvm-switch-for-30eur/ [12] https://www.redhat.com/sysadmin/hashing-checksums [13] https://www.bleepingcomputer.com/news/software/how-to-remove-background-microphone-noise-in-windows- mac-linux/ [14] https://dropbear.xyz/2021/01/18/percent-cpu-for-processes/.