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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Problems trying to deploy Laravel 9 app on Ubuntu Server 20.04

Im facing problems while try to deploy my Laravel App (v9) on my Ubuntu Server. First of all, Im going to share my Apache Configuration because I think my problem is related with it more than Laravel. ...
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how do i provide my cursors in gtk-common-themes for use on snap packages

Inglés Hello, I wanted to provide my Eevee and Vulpix cursors in gtk-common-themes to solve the DMZ-White recognition problem when using my cursors in Snap programs and thus publish version 2.0 in ...
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problem with betterdiscord - new in linux

Have problem with install better discord from this link. Terminal: nellcras@Nellcras:~$ curl -O https://raw.githubusercontent.com/bb010g/betterdiscordctl/master/betterdiscordctl % Total % Received ...
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How to install Qt6 on Ubuntu 21.10

When trying to open a program that requires Qt6, it gives error while loading shared libraries: libQt6Network.so.6: cannot open shared object file: No such file or directory. I tried installing Qt6 by ...
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Application item on Menu bar

I used to have an drop down on my menu bar called "Applications" but it now gone. It was alongside the "Activities" item. Can I get it back? Thanks Roger
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change speed of tab selection

I am wondering if it's possible to change the speed at which selection of buttons, links, etc...moves, when 'tab' is pressed (in many applications) is it system wide? or application dependent? thanks
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migrating to ubuntu as a developer

I develop applications for Windows users in my office. My coworkers only know Windows and never heard of Linux. I love Linux, I love the control and performance it offers me, and would like to start ...
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In Gnome builder, "Create Project" button is inactive when JavaScript is selected

When I try to create a new project in Gnome Builder the Create Project button is inactive if I select JavaScript and GNOME Application. If I switch to GNOME Application (Legacy) or some other language ...
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Qt 5.9.5 apps stopped show window content in 18.04

I had to install Xubuntu 18.04 because of one camera kernel driver, which refuse to operate in 20.04 kernel. Then I installed qt5-default and qtcreator (version 5.9.5). Camera application was ...
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How Complex Could a Terminal Program Go? [closed]

I have been using Linux for about 6 months and I got into terminal programs like cmus, MPlayer, and sc. I am wondering how complex a program can get before creating a GUI would be better. An example ...
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How do you develop an app on Ubuntu with a simple GUI? [closed]

How do you develop an app on Ubuntu with a simple GUI? I have looked everywhere and I can't find a way.
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How to Add the installation prefix of "Qt5QmlModels" to CMAKE_PREFIX_PATH

CMake Error at /usr/lib/x86_64-linux-gnu/cmake/Qt5/Qt5Config.cmake:28 (find_package): Could not find a package configuration file provided by "Qt5QmlModels" with any of the following ...
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Open Bangla or avro phonetic not work on Ubuntu 21.10 cinnamon

I have upgraded ubuntu 21.04 to 21.10 and it is found that avro phonetic bangla or open Bangla is not working on cinnaman but works fine in ubuntu, how can I install avro bangla or open bangla in ...
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Assistive Technology for Hands Free Use

I'm looking for packages compatible with Ubuntu 20.04 LTS that facilitate using the computer without hands. Examples include: eye gaze tracking mouse software dictation software capable of coding ...
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Opening a piece of software from anywhere [duplicate]

I have a compiled program in a certain folder that I would like to access from anywhere without needing the write ./path/to/file/each/time/app_name. For example, the app executable is installed in ...
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Read "smbstatus --shares" data from application

I want to create an application that shows who is connected to the samba server. How can I read --shares data. Where is that data located? I'm using Ubuntu 18.04 with Samba4.
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How to Install & Setup MEAN Stack on Ubuntu (MongoDB, Express.JS, Angular.JS, Node.JS)

I have started learning to mean stack web development which is an open-source JavaScript framework used for developing robust applications. It is a complete packet of software tools that have ...
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1 answer
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What all things happen when I uninstall an application in Ubuntu? [closed]

I'm working on a desktop application and recently when I uninstalled it to install a newer version the local folder of the application got deleted. I'm curious to know what are all the things that ...
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2 votes
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How do I resolve "X Error of failed request: GLXBadFBConfig" when installing iTunes using wine?

I installed wine in order to install iTunes. The iTunes icon is on the desktop but it won't open. with wine64 explorer I see iTunes.exe, however when clicking on it the following message in the ...
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Can't open "Settings" apps on ubuntu 21.04

I upgraded to Ubuntu 21.04 from Ubuntu 20.04. It ran smoothly with no problems, and now I couldn't open the "Settings." How can I overcome this problem?
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Can i use Visual Studeio.NET IDE on Ubuntu Operating System?

Now days i switched to use FOSS Software. That's why i installed Ubuntu OS on my laptop computer. But now I have got a problem to use Microsoft Visual Studio.net framework because i didn't find any ...
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6 votes
3 answers
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How to create desktop applications for Ubuntu Software Center?

I want to develop desktop applications for Ubuntu and push them to Ubuntu Software Center. I searched the whole internet but could not find any suitable article or blog on this topic. I thought of ...
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Offline commandline Thesaurus?

Online command-line thesaurus? This here has answers for an Online thesaurus. I need an offline thesaurus for the commandline. If there is none, is there a library available in the repos containing ...
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$ sdk current java is showing Not using any version of java

I have sdkman installed in my linux ubuntu 18.04. $ sdk version SDKMAN 5.11.5+713 I installed amazon java correto 11 using the below command. $ sdk install java 11.0.11.9.1-amzn java 11.0.11.9.1-amzn ...
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-3 votes
1 answer
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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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3 votes
2 answers
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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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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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3 votes
1 answer
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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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6 votes
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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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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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1 vote
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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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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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1 vote
1 answer
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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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1 vote
1 answer
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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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1 vote
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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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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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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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How to reduce tabs bar size?

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