Questions tagged [application-development]

Writing applications for Ubuntu (including Ubuntu Touch) and questions about the application submission process to the Ubuntu Software Center. This covers both open source and commercial applications.

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73 views

What are the main problems in the construction industries these days? [closed]

I am currently developing a web application for the construction industry for that I need a source of information regarding the problems faced in the construction industry. Thank you for your help and ...
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Are there ant Ubuntu Blogging Clients Actively Maintained

I'm in search of a dedicated blogging app for Ubuntu 20.04LTS. My searches have uncovered Blogilo, Drivel and gScribble. All three were last updated 10 years or so ago and hence all the libraries and ...
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1answer
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How to mine Dogecoin on Ubuntu? [closed]

I have a question for the community. What is your best advice for mining dogecoin on Ubuntu? I have searched on youtube and found this video. Link below. What is your advice for mining! Link: https://...
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Freezes while frontend development

I use Ubuntu 21.04. I'm working on an angular application using Visual Studio Code as my editor and Google Chrome for testing on an ASUS VivoBook s15(i7-8thgen, 8gigram, 250ssd). I use ng serve... ...
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Title of application menu in top bar shows java package path

I have a self written java application. When I run it under Ubuntu 20.04, the application menu in the top bar shows the java package path. See this screenshot. Does anyone know how I can influence ...
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How can a snap application use a port?

I'm trying to package a web program as a snap, so I want to know how to enable it use any port, and how to allow the user to change port with some setting. The software needs to access networks, the ...
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Ubuntu Server Management - How do I stop hard drive space from creeping up over time?

I have been using ubuntu servers (not the full desktop version) for the last 5 years, I have consistently had the same issue with hard drive space creeping up over time. I use AWS CloudWatch to notify ...
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Is there an app or an AI, that can re-render a bad quality QR code to be usable?

I have a screenshot of a bad quality QR code, and can't make it work. It would be really good if there was an app that would be able to substitute the missing parts.
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801 views

Display the contents of an HTML file on my desktop

I found a very old post on Display the HTML content on desktop as a widget. This is an updated answer with the help of these two answers Answer-1 and Answer-2. I tried to run this as a python script &...
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1answer
53 views

How to use a command to Wipe a single directory? [duplicate]

Ubuntu 20.04.1; Mate desktop Is there an app I can install or already have that will 'wipe' just one directory on the drive? Or will a 'Cut' operation, then dropping the file(s) into removable media, ...
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How to develop for Ubuntu [closed]

I know how to program in C/C++, JavaScript and PHP and I want to develop some GUI tools for Ubuntu. How shall I start? In other similar posts the OP suggests Python and he doesn't refer explicitly GUI....
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1answer
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Is there a Linux app that will prevent a laptop from going to sleep while on battery power when a specific app is running?

I am using Ubuntu 20.04 on my laptop, I would like to know if there is an app to prevent my laptop from going to sleep while on battery power when a specific app is running. Thanks in Advance, Narika
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Use kubectl to apply myapp.yaml to a worker or write our own charm for the app?

I am using focal with Juju and k8s and I am a newbie. I am wondering whether the Juju charm system will allow me to simply kubectl apply -f myapp.yaml or whether we must actually develop our own charm ...
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How to get GTK4 in Ubuntu 20.04?

GTK4 was released quite recently, and the demo codes don't run in Ubuntu 20.04 because GTK4 is not available on the system. Traceback (most recent call last): File "gtkapp.py", line 3, in &...
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Is there a complete USB bootable iso available

I need a complete USB bootable iso to be able to set up my computer with only Wifi available.. Netgear USB wifi. There seems to be missing a lot in the basic USB iso installation to be able to get to ...
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XAMPP and LAMP in Ubuntu20.04

On Ubuntu20.04, my MySQL always fails many times, so I installed XAMPP for development. I would like to ask if using XAMPP on Linux compares favorably with LAMP STACK? Or they are all the same ?. I ...
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Can I get nativefier to produce a .deb?

On macOS and Windows, the Electron JS app creator script nativefier is able to wrap a website into a .dmg or .exe. However, on Ubuntu, the nativefier script produces a big folder where you have to ...
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279 views

Error while running Qt application with wayland

I am trying to run a simple Qt application Hello World on Ubuntu 18.04 desktop with Wayland. Following commands, I tried. $ export QT_QPA_PLATFORM=wayland $ ./qello also tried with following command $ ...
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How to run home grown app as root

I have developed a GUI app that I sometimes want to run as root. In Ubuntu 18.04, I used sudo with no problems, but in 20.04, sudo will not run the app: with no error message. Also, if I run sudo su, ...
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How can I install packages on another from USB? [duplicate]

Meaning: without running sudo apt-get install x. (where x is the name of the app). In Windows I'd download the app (x.exe). Save it on the USB. Then install it from the USB on the computer I want to ...
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1answer
134 views

not gtest folder in /usr/src/ folder

I am trying to install gtest in 18.04. I ran sudo apt-get install libgtest-dev but when I go in to the folder /usr/src/ there is not gtest or googletest folder. According to this: https://gist....
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1answer
589 views

How to fix gunicorn.service: Failed to load environment files: Is a directory

When i run sudo journalctl -u gunicorn I get: Oct 14 12:49:22 my-server-thing systemd[1]: gunicorn.service: Failed to load environment files: Is a directory Oct 14 12:49:22 my-server-thing systemd[1]:...
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How to install epson L360 scanner

Problem with the installation of epson l360 image scanner, I down loaded the scanner driver but failed to instal, please help what should I do?
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1answer
171 views

How can I remove and purge EasyScreenCast from Ubuntu 20.04?

I typed sudo apt remove easyscreencast and I got the result: Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package ...
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How to speed up dpkg-deb build

I use dpkg-deb to build a deb package. However, in my CI tests, dpkg-deb takes a lot of time to complete (~6min). Is there a way to speed up the process? I have tried setting compression to none: dpkg-...
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1answer
207 views

Issue with GPG keys while setting up a proot environment

I am trying to set up a chroot environment with pbuilder. I tried this but got the following issue. $ sudo pbuilder create --distribution focal W: /root/.pbuilderrc does not exist I: Distribution is ...
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1answer
25 views

dpkg: problems with creating packages

I use dpkg to create package and distribute my app. Please, look at the example of my 'DEBIAN/control' file: Package: myapp Version: 1.0.1 Section: base Priority: optional Architecture: amd64 Depends:...
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1answer
57 views

How to reduce tabs bar size?

Its too large and annoying, I tried gnome-tweaks but no options found.
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1answer
83 views

Create Application command in ubuntu

I have a script script.sh but I am very lazy if when running must open through the folder where the file and run it in the way ./script.sh, How do I get my script to use keywords? I have a script.sh ...
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28 views

Not able to Numberic number ini application

I am using Ubuntu and numbers (Digits) are not showing up in the browser. All other info is showing correctly. Sharing screenshot of the same as well.
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1answer
750 views

Error setting up pbuilder following Ubuntu Wiki. How to set it up?

I am setting up my machine for Ubuntu development. I am following Ubuntu Development Beginnings, but while running sudo pbuilder create command I am getting below error: $ sudo pbuilder create I: ...
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Ubuntu user access rights for Jenkins

I have Two users on Ubuntu setup user : kmb and user : dev where user kmb has installation of Qt, Qt for webassembly and Jenkins server also where as dev has nothing installed in it so when i login to ...
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1answer
235 views

Is there a way to use setTimeout in Gnome Shell Extension code?

I am trying to code a gnome-shell extension. It uses Javascript. But one major problem when I want to use setTimeout() it tells me this in the log: ReferenceError: setTimeout is not defined, what I am ...
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1answer
102 views

Show an application in the “Select Application” dialog list [duplicate]

I've written a software that runs on Ubuntu.. (18.04 and 20.04 tested). I did not package it, since I'm using Arch linux as well, but wrote an installation script. It copies some files and generates a ...
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1answer
163 views

How to apply Ubuntu 14.04's dock on Ubuntu 20.04 [duplicate]

there! Hope everyone is doing fine. I've recently upgraded my laptop, Ubuntu 14.04 LTS to Ubuntu 20.04 LTS, but I do miss the wonderful dock the former does have. I mean, scrolling on the dock I could ...
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1answer
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I want to create application for linux system and i want to know how to modify open source application like vestacp webmin [duplicate]

I am a very beginner in linux development..plz explain what i want to learn to build linux application or develop or modify open source application
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1answer
3k views

Exception: Gradle task assembleDebug failed with exit code 1

I just started with app development with flutter, but am not even able to run the test app. This is what come on console : Launching lib/main.dart on AOSP on IA Emulator in debug mode... Running ...
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32 views

Configure GDebi Packagge [duplicate]

I installed GDebi package installer. I tried to configure it step by step but have not been successful. I have used the command: sudo apt-get install -f with the output: Reading package lists... ...
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29 views

What is the status of Ubuntu Quickly? Is it still developed?

I'm trying to look into Ubuntu Quickly, but the information seems really outdated, 2010. Is the project still on? What is the official page I can download it from? Is there a similar tool in .deb ...
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Is there any software for using mobile device as an air mouse for Ubuntu?

I just want to know if there is any software available as an air mouse(by air mouse I mean which you hover in air to move the cursor using the IR blaster in the phone). Is there is any development ...
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46 views

Can't install Quickly on Ubuntu 18.04

I'dd like to learn linux development so I tried to install Quickly. Followed instructions from this page 'https://wiki.ubuntu.com/Quickly#Installation", but my system says "Unable to locate package ...
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1answer
215 views

GUI for Kaldi ASR

I'm a graduating student. Our group's thesis is about ASR. In less than a week, we're going to defend it. We've already produced a model for our ASR which we run on Linux. Our problem is we need a ...
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How to make a lockscreen for xfce using qml without sddm lockscreen

I was trying to make a lock screen for Xfce and gnome using QML and python PyQt5. main.qml import QtQuick 2.12 import QtQuick.Controls 2.12 import QtQuick.Window 2.12 import QtGraphicalEffects 1.0 ...
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1answer
97 views

How to add events to built-in calendar?

I am looking for way to add events to this calendar. I know that I can use third-party applications to do it from GUI (or sync it with online service like Google) but I am specifically interested on ...
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46 views

Video upgrade problems (GT 710)

So I've been playing around with Ubuntu for a few months and finally decided to make my own NAS with it. I've installed PLEX, OpenVPN and few other things using guides I've found on this site as well ...
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3answers
531 views

What can I do with Ubuntu without GUI?

I have some some problems with my notebook (RAM is 4 GB, so it works VERY slowly as I am a developer and use some applications that require high RAM which I currently don't have) and as I am new to ...
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193 views

NS2 Software compilation issue in Ubuntu 18.04

I tried to build and compile NS2 source code in Ubuntu 18.04 LTS distribution but I get back that message: make: *** No rule to make the target « mit/rca/rcagent.c », necessary for « mit/rca/rcagent....
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1answer
94 views

Graphical applications / ports / tasks manager?

I'm trying to manage my running applications for each port on Ubuntu (monitoring). Any suggestions for a graphical interface?
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49 views

Ubuntu server 16.04 - dashboard for managing running application / ports

I am running my ubuntu standard server on AWS EC2 instance. I have multiple application, each is running on a different port. I'd like to be able to monitor those applications. Is there any dashboard ...
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1answer
874 views

How to create a simple GUI in C++; without Qt, Gtk, or Mondo? [duplicate]

newbie here using Ubuntu 18.04 LTS I am coming from the easy Windows world, I am trying to write an Windows Forms dialog application. When writing code I see that we have a choice between Mondo, Qt, ...

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