- WLUG - wlug.mailman3.com

WLUG meeting and presentation material
by Joshua Stone 21 Dec '19

21 Dec '19

Hey everyone, Thank you again for letting me present on Silverblue, Toolbox, and Flatpak for December's WLUG meeting! I've uploaded a PDF copy of the slideshow material to my Google Drive for anyone who couldn't make it to the meeting and/or wants to look at some of the references inside: https://drive.google.com/open?id=1FJc9864buwRFS5UktivfffU7u9CySSKB Admittedly the material itself can be difficult to understand as it was made more to complement an oral presentation format, but I could continue improving on the material to make it more complete if there's enough interest, plus much development has been going on around containers that it makes sense to update it anyway. I hope everyone is having an excellent time enjoying the holidays! -Josh

2 1

Encrypted Sorna Reviewer CD files
by Richard Klein 21 Dec '19

21 Dec '19

I picked up a copy of some x-rays and MRIs. They're on a CD, encrypted, with Windows viewer software. Has anyone figured out how to view these in Linux? I have the password to decrypt, I just don't know what software to use (without resorting to Windows). I think it may actually be a DICOM file format. Here's a link to the viewer software: https://sorna.com/solutions/reviewer/ -- Rich

6 7

December WLUG Meeting! Topic: Fedora Silverblue, toolbox and Flatpaks!
by Tim Keller 19 Dec '19

19 Dec '19

Hey Everybody, We've got a meeting this Thursday on December 19th 2019! Location: WPI Campus Center Mid-Century room (our usual haunt) Date & Time: December 19th, 2019 Our speaker this month is Joshua Stone. He's going to giving a talk about a couple of cool technologies in Fedora! Josh provided me some details about these innovations so I've mashed them up and included them below. Silverblue: https://fedoramagazine.org/what-is-silverblue/ Toolbox: https://docs.fedoraproject.org/en-US/fedora-silverblue/toolbox/ Flatpaks: https://flatpak.org/ *Silverblue* s a Fedora variant designed around immutability where a new system image is committed as the new /sysroot without affecting the state of the running system. This is reminiscent of Android A/B updates, although the update backend -- ostree -- has elements of a version control system like git. *Toolbox* is also interesting as it lets you switch into an unprivileged development environment that can be built up and torn down without affecting the host as tools are installed inside a container. *Flatpak* uses the same file storage backend as Silverblue to manage apps and shared runtimes. This app distribution technology allows you to decouple apps and operating systems as everything is built and run inside a sandbox, making upgrades easier. Compare needing only one version of an app to package as a flatpak, versus packaging for different versions. As usual, snacks and refreshments will be provided and afterwards we'll head off for dinner to continue the conversation. Thanks, Tim Keller WLUG President -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

4 4

Marvellous Inc.
by Dennis Payne 17 Dec '19

17 Dec '19

I stumbled on an open source programming game. It is called Marvellous Inc. It is available on Steam and itch.io for $5. I downloaded the github source to try it. I had to make some modifications to get it running on love 11.2. You can download it from: https://github.com/dulsi/MarvInc To run it, install love. Grab the git repository. Go to the MarvInc/marv directory and run 'love .' I've written up an Open Game Source article about my playing around with the program. http://identicalsoftware.com/games/marvellousinc -- Dennis Payne dulsi(a)identicalsoftware.com https://social.freegamedev.net/channel/dulsi

1 0

Date for next meeting
by Joshua Stone 09 Dec '19

09 Dec '19

Hey everyone, Have we decided on a day for the next club meeting? I'm interested in demonstrating some new material for it, if not for January. -Josh

2 1

Plex media drive mount point
by Richard Klein 02 Dec '19

02 Dec '19

I blew away my Linux Mint installation today and installed Manjaro. All my media for my Plex server was on a separate drive that was mounted at /Media. Now it's at /run/media/richspk/Media/, and Plex can't see anything below richspk. My /etc/fstab is much more spartan than I'd expected. sda is a Windows install, sdb is media, and sdc is the Manjaro install. Should I add /Media (sdb) to /etc/fstab, or should I mount it some other way? This is what /etc/fstab looks like right now: # /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a device; this may # be used with UUID= as a more robust way to name devices that works even if # disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> UUID=26dedffb-3099-4a86-b565-c2e8adec81b2 / ext4 defaults,noatime,discard 0 1 tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0 And current block devices: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT UUID loop0 7:0 0 89.1M 1 loop /var/lib/snapd/snap/core/8039 sda 8:0 0 465.8G 0 disk ├─sda1 8:1 0 500M 0 part B6AAD05DAAD01BA5 ├─sda2 8:2 0 464.5G 0 part E002D31A02D2F50E └─sda3 8:3 0 846M 0 part 9294B21894B1FF33 sdb 8:16 0 2.7T 0 disk /run/media/richspk/Media 946b363e-ec7e-49d1-a5f2-f06caf8e4e21 sdc 8:32 0 931.5G 0 disk └─sdc1 8:33 0 931.5G 0 part / 26dedffb-3099-4a86-b565-c2e8adec81b2

4 11

Call for help with network hardware setup
by Keith Wright 22 Nov '19

22 Nov '19

I am using Debian and trying to set up a couple of ethernet cards. I've seen strange behavior. Have I found a bug? Done something stupid? Rather than clog the WLUG list with details, I have put my question on a web page, which I will update as I learn more: http://www.free-comp-shop.com/ether.html -- Keith

2 3

Ideas for the next WLUG meeting
by Joshua Stone 20 Nov '19

20 Nov '19

Hey everyone, I'd just like to say I had a fun time at Thursday's meeting! I'm already looking forward to the next meeting as I'm sure there are plenty of interesting topics we could discuss. As mentioned before, I think we could examine technologies that'd be beneficial to Linux on the desktop, like comparing packaging technologies including Flatpak, Snap, and AppImage. I think we could also look into the future of containers on the desktop as a whole with projects like Flatpak, toolbox, podman, and Silverblue. My workflow over the past few years has been using these upcoming technologies as daily drivers as they lead to saner development. For example, my laptop runs Silverblue ( https://fedoramagazine.org/what-is-silverblue/) which is a Fedora variant designed around immutability where a new system image is committed as the new /sysroot without affecting the state of the running system. This is reminiscent of Android A/B updates, although the update backend -- ostree -- has elements of a version control system like git. Toolbox ( https://docs.fedoraproject.org/en-US/fedora-silverblue/toolbox/) is also interesting as it lets you switch into an unprivileged development environment that can be built up and torn down without affecting the host as tools are installed inside a container. For example, I can build and install duc inside a toolbox without actually installing to the host /usr: [jstone@jstone-laptop ~]$ toolbox create --release 31 --container duc- test [jstone@jstone-laptop ~]$ toolbox enter --container duc-test ⬢[jstone@toolbox ~]$ git clone https://github.com/zevv/duc ⬢[jstone@toolbox ~]$ cd duc ⬢[jstone@toolbox duc]$ sudo dnf --assumeyes install gcc make autoconf automake pango-devel cairo-devel tokyocabinet-devel ncurses-devel ⬢[jstone@toolbox duc]$ autoreconf --install ⬢[jstone@toolbox duc]$ ./configure ⬢[jstone@toolbox duc]$ make ⬢[jstone@toolbox duc]$ sudo make install # no password needed ⬢[jstone@toolbox duc]$ mkdir ~/.cache/duc ⬢[jstone@toolbox duc]$ tcbmgr create ~/.cache/duc/duc.db ⬢[jstone@toolbox duc]$ duc index ~ ⬢[jstone@toolbox duc]$ duc gui Finally, I've been installing most of my apps as Flatpaks, which uses the same file storage backend as Silverblue to manage apps and shared runtimes. This app distribution technology allows you to decouple apps and operating systems as everything is built and run inside a sandbox, making upgrades easier. Compare needing only one version of an app to package as a flatpak, versus packaging for different versions of distros: https://flathub.org/apps/details/org.clementine_player.Clementine https://www.clementine-player.org/downloads I'd be glad to hear what everyone has to say! -Josh

3 5

Reminder: Meeting today! Nov 14th, 2019
by Tim Keller 14 Nov '19

14 Nov '19

We've got a meeting today! If people are interested I could go into detail about the new 355tb zfs on linux system i just deployed and the issues I ran into and the bug/behavior reports I've put I to the Zol team. Date & Time: November 14th, 2019 @ 7pm. Location: WPI Campus Center Room rm 128 (Taylor room) It's the bottom of the stairs in the student center. Snacks and refreshments will be provided and afterwards we'll head off for dinner. Later, Tim.

3 2

WLUG Meeting Next Thursday! (Nov. 14th, 2019) Topic: TBD
by Tim Keller 08 Nov '19

08 Nov '19

Hey Everybody, We've got a meeting next Thursday! I don't have a topic yet so if you're got a topic that you'd like to talk about, let me know! Otherwise, we'll figure something out Date & Time: November 14th, 2019 @ 7pm. Location: WPI Campus Center Room rm 128 (Taylor room) It's the bottom of the stairs in the student center. Snacks and refreshments will be provided and afterwards we'll head off for dinner. Later, Tim. -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

1 0