SMLR 320: Rtcwake

Posted by Tom Lawrence on February 9, 2020 in Show-mp3 |



Show 320

Contact Us:

show (at) smlr.us or the Contact us page

On the Lawrence Systems Forums



Tony Bemus, Tom Lawrence, Phil Porada and Jay LaCroix

Sound bites by Mike Tanner

Phils GitHub


The LawrenceSystems YouTube Channel Where videos

Jay’s Site


Jay’s Bash Prompt https://pastebin.com/kzPjE8y4


Show Notes


(Tom) Wireguard is in the linux kernel 5.6 https://www.zdnet.com/article/at-long-last-wireguard-vpn-is-on-its-way-into-linux/ 

  • It is a layer 3 secure VPN. Unlike its older rivals, which it’s meant to replace, its code is much cleaner and simple. The result is a fast, easy-to-deploy VPN.
  • Linus Torvalds wrote, “I’m 1000% with Jason on this. The crypto/ model is hard to use, inefficient, and completely pointless when you know what your cipher or hash algorithm is, and your CPU just does it well directly.”
  • WireGuard works by securely encapsulates IP packets over UDP. It’s authentication and interface design has more to do with Secure Shell (SSH) than other VPNs. You simply configure the WireGuard interface with your private key and your peers’ public keys, and you’re ready to securely talk.


(Tom) Lenovo is offering Linux servers



(Tony) Ubuntu Touch is Shaping Up Nicely on the PinePhone [Video]



(Phil) The Let’s Encrypt Oak CT log is now included in Google Chrome version 78 and Apple Safari!


  • Certificate Transparency is an Internet security standard and open source framework for monitoring and auditing digital certificates.
  • Usable by all publicly-trusted certificate authorities.
  • Let’s Encrypt owns their own uptime


(Tom) LibreOffice 6.4 Released, This is What’s New


QR code generator

App icons in Start Center

Automatic redaction

Faster help system

Table panel added to the Writer sidebar

Comments can be marked as resolved

Combine multiple text boxes into one in Draw, Impress

Sifr icon theme now supports large sizing

Checkbox to enable/disable sending crash reports


(Tony) Systemd is changing how home directories are managed in systemd v245


  • Systemd-homed has been merged as the latest (optional) fundamental change to Linux distributions in how home directories are handled.
  • Systemd-homed makes it easier to support migratable home directories, more self containment within home directories, better password and encryption handling, and other modern Linux home directory features.
    • LUKS encrypted volumes, mounting home directories from a CIFS server, FSCRYPT encryption, Btrfs sub-volume handling, and making use of JSON-formatted user records. 


(Phil) XCP-ng  is officially joining the Xen Project, an open source hypervisor hosted at the Linux Foundation. https://xcp-ng.org/blog/2020/01/28/xcp-ng-join-the-linux-foundation/ 

  • Xen Project is a recognition that XCP-ng is, de facto, the Open Source Xen hypervisor distribution. 
  • Joining the Xen Project won’t change the XCP-ng Project very much. They will continue to invest resources for innovation and are still recruiting 6 new developers in 2020.
  • We can expect more involvement in the Xen Project itself to improve each layer of the XCP-ng Project.

(Tom) Linus Torvalds says “Don’t use ZFS”—but doesn’t seem to understand it

Linus should avoid authoritative statements about projects he’s unfamiliar with.



(Tony) Emotet Hacks Nearby Wi-Fi Networks to Spread to New Victims


  • discover wireless networks around an already infected Wi-Fi-enabled computer and attempting to brute-force


(Phil) Shellcheck 8 year retrospective https://www.vidarholen.net/contents/blog/?p=859

  • ShellCheck is a static analysis tool that points out common problems and pitfalls in shell scripts.
  • ShellCheck is generally considered a shell script linter, but it actually started life in 2012 as an IRC bot (of all things!) on #bash@Freenode. It’s still there and as active as ever.
  • Since ShellCheck was a hobby project that wasn’t intended to run on random people’s machines, the developer could completely ignore popularity, familiarity, and practicality, and pick the language that was the most fun and interesting. That language is Haskell.
  • Lot’s of what I would have done differently. It’s worth a read.


(Tom) Troll Hunter – Mycroft’s Position on Patent Trolls

Patent trolls get paid because short-sighted companies make the decision to pay.  Simply put, it is usually cheaper in the short run to pay a troll than it is to litigate.  It is also cheaper to give a schoolyard bully your lunch money than it is to visit a doctor.  The thing is, once you pay the bully, he’ll just come back again and again and again. Eventually, that lunch money adds up to a lot more than a doctor’s visit.  In the long run the best way to deal with a bully is to punch him square in the face. You might take a beating, but if you do it every time? The bully will find easier prey.




(Tony) SATA HATs support up to four drives on Raspberry Pi 4 or Rock Pi 4


  • RPI NAS vs Mini ITX NAS

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