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today's howtos

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  • How to Install ELK on Ubuntu 20.04

    The ELK stack is known as Elastic Stack is a collection of three open-source software i.e. Elasticsearch, Kibana, and Logstash. The ELK stack is used to search, analyze, and visualize a large volume of data.

  • How-To: Upgrade PinePhone PCB - Boiling Steam

    BraveHeart and UBPorts PinePhone owners: know that you’re not left in the dark if you wanted to have 3 GB of RAM and double the internal storage (32 GB) on your existing device, without having to buy another PinePhone.

    Pine64 has made it possible to upgrade your existing device by selling the mainboard itself. This component currently costs $105; they used to sell them at a discount of $80 for people who already had the older-generation PinePhones, but it seems that promotion has already ended. Tack on another $12 or so for standard shipping, and $20 for expediated shipping.

    I’ve noticed during the time I’ve used Arch Linux with this upgrade, the extra GB of RAM has definitely made an improvement in terms of responsive-ness. Menus and applications open and close a lot more smoothly. And you can’t go wrong with having double the storage capacity; now you can install more applications, have more music, etc.

  • Apt vs. Aptitude Command: A Definitive Guide | FOSS Linux

    f you are like me, you surely have come across the aptitude and apt command. Not only that, but you should have also seen discussions based on which one is “better”? If you are still wondering, then you have come to the right place as we not only understand both of them but also try to differentiate them in the most unbiased way you can find.

  • [Old] How to enable SSH login notifications by email in CentOS 8

    Is your Linux Server used by multiple users and you want to know when a user is logging in by SSH? If yes, then you can enable SSH notifications in Bash profile to get notified. We will add a small script that will send you an email when somebody logs into the server.

  • MAAS CLI-only machine creation | Ubuntu

    The whole point of MAAS configuration is to get machines deployed. If you read the previous post in this series, you know how to install MAAS and do basic configuration using only the MAAS Command-Line Interface (CLI). So far, so good, but now we need to enable networking and create some machines.

More in Tux Machines

Android Leftovers

Schedule appointments with an open source alternative to Doodle

In previous years, this annual series covered individual apps. This year, we are looking at all-in-one solutions in addition to strategies to help in 2021. Welcome to day 13 of 21 Days of Productivity in 2021. Setting appointments with other people is difficult. Most of the time, we guess at a date and time and then start the "is this time bad for you? No, that time is bad for me, how about..." dance. It is easier with co-workers since you can see each others' calendars. You just have to find that magic spot that is good for almost everyone who needs to be on the call. However, for freelancers managing personal calendars, the dance is a routine part of setting up calls and meetings. Read more

This week in KDE: the Plasma 5.20 beta is here!

Well folks, you finally have a chance to test out Plasma 5.21, in beta form! Please do install it and find all the bugs we missed. Bug reports have already started pouring in, and we’ll fix them as fast as we can in the next month. [...] Kate now has a searchable HUD-style command palette that lets you trigger menu items with super speed! It’s activated using the Ctrl+Alt+I shortcut, and we’re investigating adding it to other KDE apps as well in the form of a re-usable framework component. Read more

Free, Libre, and Open Source Software Leftovers

  • Raptor Announces Kestrel Open-Source, Open HDL/Firmware Soft BMC

    Raptor Engineering known for their work on open-source POWER9 systems has announced Kestrel, an open-source baseboard management controller (BMC) design that is open down to the HDL design and firmware. Raptor describes Kestrel as "the world's first open HDL / open firmware soft BMC, built on POWER and capable of IPLing existing OpenPOWER systems!" This isn't a physical BMC chip but a "soft" BMC that is currently designed and tested on Lattice ECP-5 FPGAs. It can currently handle an initial program load (IPL) for a POWER9 host like the Blackbird and Talos II systems of Raptor Computing Systems after deactivating the existing ASpeed hardware BMC found on those systems.

  • Apache Superset Reaches Top-Level Status For Big Data Visualizations

    The Apache Software Foundation announced on Thursday that Apache Superset reached "top-level" status. Apache Superset is the project's big data visualization and business intelligence web solution. Apache Superset allows for big data exploration and visualization with data from a variety of databases ranging from SQLite and MySQL to Amazon Redshift, Google BigQuery, Snowflake, Oracle Database, IBM DB2, and a variety of other compatible data sources.

  • Intel oneAPI Level Zero 1.1 Headers/Loader Released

    The oneAPI Level Zero repository consisting of the Level Zero API headers, Level Zero loader, and validation layer have reached version 1.1. Following last year's big oneAPI 1.0 "Gold" status, Intel's open-source oneAPI effort continues moving along with the Level Zero focus as their low-level, direct-to-metal interface for offload accelerators like GPUs and other "XPU" devices.

  • [Older] A short journey to x86 long mode in coreboot on recent Intel platforms

    While it was difficult to add initial x86_64 support in coreboot, as described in my last blog article how-to-not-add-x86_64-support-to-coreboot it was way easier on real hardware. During the OSFC we did a small hackathon at 9elements and got x86_64 working in coreboot on recent Intel platforms. If you want to test new code that deals with low level stuff like enabling x86_64 mode in assembly, it's always good to test it on qemu using KVM. It runs the code in ring 0 instead of emulating every single instruction and thus is very close to bare metal machines.