Ubuntu Core is a minimal version of Ubuntu intended for large-scale deployments, bringing transactional updates through the "snappy" packaging system.

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snapd will not configue

:~$ sudo apt install snapd snap- Reading package lists... Done Building dependency tree Reading state information... Done Package 'snap' is not installed, so not removed snapd is already the ...
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1answer
23 views

C programming in Ubuntu SnappyCore

I recently downloaded ubuntu snappycore OS. I wonder if i can install a GNU compiler for developing C applications. If I can, how do I do it?
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1answer
19 views

Ros with snappy

I'm following this example: https://developer.ubuntu.com/en/snappy/build-apps/ros-snap/ The program works fine with roslaunch, and I'm able to create and install the snap. However, when running the ...
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14 views

Single User Mode [Snappy Ubuntu Core]

I am trying to boot an Intel Nuc running Snappy Ubuntu Core into single user mode. I have tried the usual method, but have gotten no where. Any suggestions for getting this to work would be greatly ...
8
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1answer
67 views

How can I iterate more quickly when creating a snap?

I am working on a snap of a bigger piece of software and building the snap, removing the old one, installing the new one just takes a very long time. I would like to iterate over creating the snap ...
5
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1answer
44 views

Add custom AppArmor rules to snap?

I'm trying to get an application working with snapd and have run into some issues regarding AppArmor permisions. It seems that in order to have my app be fully functional, it needs some custom ...
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1answer
226 views

How to create snappy nodejs web application

Currently I'm working on IoT project, and we decided to use Beagle Bone Black. Original BBB OS use too much space and RAM so we googled and found Snappy Ubuntu Core as a perfect solution. Problem is ...
5
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1answer
134 views

How do I debug snaps?

I've successfully built a snap that I can install on my system. However, it crashes upon start, and I'm not quite sure where to start debugging that crash. What are the different approaches to ...
2
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1answer
77 views

How to make a snappy package for EasyCwmp?

I have developed an open-source daemon EasyCwmp. EasyCwmp has many dependencies such as libcurl, libubox, libubus, libuci, json, libmicroxml. I want to generate a snappy package for Ubuntu core for ...
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21 views

NTP synchronisation in Ubuntu Core 10

How can i configure a proper NTP synchronization in ubuntu core 10. I am running the following version ubuntu-core 2016-05-24 10 ubuntu I tried using root@localhost:/home/...
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39 views

Snappy with ros

Im following the https://developer.ubuntu.com/en/snappy/build-apps/ros-snap/ example to test before i "snap" my own creation. However, at the end I'm not allowed to run: $ sudo snap install ros-...
8
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1answer
235 views

Where can Ubuntu snaps write data?

Applications packaged as snaps in Ubuntu are installed (mounted) under the /snap/$SNAPPNAME location. Everything under /snap is mounted as a read-only file system, thus applications cannot write to ...
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33 views

Ubuntu snappy core launcher failed: error loading shared libraries librt.so.1 file: no such file or directory

I'm running Ubuntu Snappy Core on a Dell IoT Edge gateway. I have installed the following Debian packages: libnm-glib pptp-linux pppor usb-modeswitc libcurl3 I restarted the system. Now the ...
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37 views

How to implement or call up BLUETOOTH in Snappy Ubuntu of Beaglebone Black

Im not sure this questions is weird or not, im very new to IoT, really in need of advices in this matter. I can call out (scan) bluetooth in the default debian OS in beaglebone with a bluetooth dongle ...
1
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2answers
310 views

How to totally remove ubuntu from boot menu after Windows dual boot

I dual booted windows 10 and ubuntu. Now, I don't want the Ubuntu. So I deleted the ubuntu partitions. Next, I used the Windows recovery drive to run bootrec.exe /fixmbr in cmd.So If I power my pc now,...
0
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1answer
24 views

Snappy and Robotics

I am interesting in the Snappy environment for robotics development with the raspberry pi and other such hardware. I am very new at all of this, so what are the benefits of snappy in iOT versus, say, ...
12
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1answer
2k views

What is Snapcraft?

I've been trying snappy Ubuntu core on a Raspberry Pi 2 device, and I've heard I can use Snapcraft to do development on it. Now I hear that snaps are available on the desktop and server for Ubuntu 16....
2
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2answers
30 views

Sharing resources between snappy packages

Sharing resources My first example snap build is a java server I developed. I managed to create a snap that contains the jre, my server and the service startup. Everything works fine. The snap file ...
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1answer
27 views

Ubuntu Snappy XAMPP Pi2

Is there a way to install xampp in Ubuntu snappy 14.04 Raspberry Pi 2?
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1answer
142 views

Install Unity8 apps on Ubuntu 16.04

Is there a way to install Unity8 apps like terminal and file explorer as snappy packages on Ubuntu 16.04LTS? I am not looking for a PPA with precompiled binaries, but for the actual snappy packages. ...
0
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0answers
37 views

Internal server error when retrieving files from the archive in lxd

I'm trying to build a package with snapcraft cleanbuild which uses lxd to build a snap in a container. Unfortunately it fails pretty quickly with an http 500 error. The host is able to connect fine, ...
4
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1answer
111 views

Testing clean snapcraft build

I've made a snapcraft.yaml for an application. It builds on my computer but a friend finds it doesn't build for him. How can I make sure a snap builds for everyone before I share it?
6
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1answer
603 views

Difference between Snappy and Click

I don't understand the difference between Snappy and Click. Both allow for image based system updates. Both use AppArmor to confine apps. Soon Click will run on the desktop, phone and tablet and ...
15
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1answer
2k views

How does Snappy relate to Nix and Guix?

I searched for a comparison but found non and am not quite well informed enough to do it myself right now. All of them provide transactional updates, but different levels of containment. Snappy ...
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2answers
953 views

How do I repackage a .deb for Ubuntu Snappy?

I want to convert some Ubuntu software in .deb, specifically guake, to packages for Ubuntu Snappy*. According to the documentation on the Ubuntu dev tools, All metadata lives in meta/package....
8
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2answers
365 views

How to update all Snap packages

I know that I can update a snap package using sudo snap refresh <package> But there is a way to update all snaps, like sudo apt dist-upgrade
6
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1answer
77 views

How are Ubuntu snaps updated and upgraded?

I know I can upgrade an individual snap with the sudo snap refresh $SNAPNAME command, but I'm wondering whether there is a single command to upgrade all snaps at once. Or are they upgraded ...
2
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1answer
78 views

How do system services work in snaps

When creating a snap, and according to the syntax of the snapcraft.yaml file, the daemon keyword can be added to specify that the app will be run as a system service. As an example of such declaration:...
2
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1answer
120 views

How does Click/Snappy solve dependency issues?

There is a bit of confusion surrounding click and snappy. For one, I understand that there are certain packages that are not allowed to be shared due to app-armor. For example, if I write a Qt ...
2
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3answers
1k views

start GUI interface from command line in snappy ubuntu

How can i get into desktop /gui of snappy ubuntu from putty? startx command is not working or is there any way to do loke real vnc m using raspberry pi2+snappy core
2
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1answer
117 views

How to start the snapcraft app?

I have sideloaded snapcraft java-hello-world app. I am wondering how to start the same. I have tried to invoke the wrapper in the shell and I get java not found. (amd64)ubuntu@IndiaDevResSnappy3:/...
5
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1answer
128 views

What is devmode for snaps?

I have heard about the ability to use snaps in developer mode. What is this mode and what can I use it for?
13
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4answers
7k views

Why is Ubuntu moving to Snappy packages?

Why Ubuntu dumping .deb packages and moving to .snappy packages? (At least for now they are keeping .deb package for normal distributions). .deb is already the most popular packaging out there. ...
1
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1answer
160 views

Ubuntu 16.04 snap install error

I'm having problems installing snap-packages on Ubuntu 16.04 x64. For example, when I try to install hello-world, it downloads ubuntu-core and then throws this error: ~$ sudo snap install hello-...
0
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45 views

Mounting a drive Ubuntu Snappy

Seeing as the Snappy Ubuntu filesystem is so locked down I was wondering whether one can mount and access an external drive in Ubuntu Snappy?
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191 views

Console login on ubuntu-core-16.04-core-armhf.tar.gz

I'm running ubuntu-core-15.10-core-armhf.tar.gz on a arm evaluation board. Without any change the board boots up ad ask login on ttyPS0 (Started Serial Getty on ttyPS0.). If I try to use ubuntu-core-...
0
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1answer
83 views

Applications can't connect the X server to launch

I can install and run CLI snap applications without issues, but when trying to run graphical apps it seems they can't connect to the X server, what am I doing wrong? keepassx: cannot connect to X ...
2
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2answers
94 views

How to get information on specific .snap

While beginning to experiment with Snappy Ubuntu Core I find it very difficult to gather information (this might be a general problem, there doesn't seem to be a lot of documentation on the platform ...
2
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4answers
201 views

Can't install snap after removing it

I'm pretty new to snaps, so I didn't know if it was a bug or if I was missing something. I installed a Snap via "sudo snap install ubuntu-clock-app" then I removed it via "sudo snap remove ubuntu-...
1
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1answer
277 views

Why are there no new Ubuntu (core) Snappy releases?

I'm looking at the image channel guide for developers of Ubuntu Snappy Core. The only release available is 15.04. To me this seems odd; on the desktop and server side there has been a 15.10 and a 16....
4
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1answer
59 views

How to package a browser plugin and a gui app in a snap package

My app is a gui app (qt) and a browser plugin. The plugin is used only for firefox. When the user clicks a button I want to open my gui-app. I would like to use a snap package to do this, but I can ...
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1answer
79 views

Where can I find Ubuntu 14.04 core images?

All the internet points me to here (including the release notes) but the link is broken. Anyone knows where to find it?
0
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1answer
75 views

How to flash Ubuntu-core Snappy on Artik-5 (v 0.5)?

Artik 5 already have an OS fedora 22. I followed the link to boot from SD card, and got success: https://developer.ubuntu.com/en/snappy/start/samsung-artik-iot-modules/ But I cannot flash Ubuntu-core ...
1
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1answer
280 views

How to Upgrade Ubuntu core snappy from 15.04 to 16.04

I have Ubuntu core running on a Raspberry Pi 2 stuck on Linux Porzellangardine 4.2.0-1024-raspi2 #31-Ubuntu SMP Tue Feb 9 11:44:25 UTC 2016 armv7l armv7l armv7l GNU/Linux No LSB modules are available. ...
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91 views

How to use dnsmasq on Ubuntu core snappy

On the snappy store I found dnsmasq which would be useful to access webservers running on lxd. When I installed it, it didin't do any change on the system. When I entered the /apps/dnsmasq-arm.howy ...
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Is it possible to run and show the app on a device with snappy core?

The question is as simple as show the app writen for snappy/ubuntu core on a device running snappy/ubuntu core. Like the Raspberry Pi 2. Is this possible or am I better off running Ubuntu Mate on the ...
1
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1answer
472 views

Self hosted Snappy Store

Just like a self-hosted deb repository, is it possible to self-host a Snappy Store for private snapps? I have found that debs can be converted to snapps and that snapps can be submitted to the Ubuntu ...
0
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1answer
96 views

ubuntu 16.04 snappy core and opening pdf files

Is it possible to have all pdf files open in a snappy core project / application to prevent infection of the main machine OS? If so how? PDf files are increasingly being infected with some type of ...
1
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2answers
55 views

Creating own snap images

I see some similarities between Snap and Docker. I cant find on internet any guide how to create snap image, like image in Docker. How to create it? I want to build snap with some old libs and old app ...
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1answer
107 views

installed package with snap - command not available

I saw that tmux is available with snap find and apt-cache. I decided to install with snap. Howto use now tmux? I am normal desktop user, not cloud computing. # snap error: Please specify one ...