Questions about programming for and on Ubuntu.

learn more… | top users | synonyms

0
votes
1answer
42 views

What are the files needs to be edit to add a user? and what to be write?

I am trying to write a C program to add a new user to my Ubuntu 14.04. I edited 1) /etc/passwd sachin:x:65535:1:sachin:/home/sachin:/bin/bash 2) /etc/shadow ...
3
votes
1answer
180 views

Can't get iconify() and deiconify() to work properly

I'm writing app for Ubuntu with C++ and Gtkmm. In my app i use libappindicator to show icon with simple menu in notification area. Icon and menu works ok, i can minimize window to panel (using ...
0
votes
1answer
22 views

finger print sensor for project

I am an engineering student and I am doing my minor project which uses finger print sensor and I am using R30x series. Can I work in the Ubuntu platform and work with the module that I have got. ...
2
votes
0answers
395 views

Unable to start topcoder arena in Ubuntu 14.04

When I want to clear cache using javaws - viewer these error comes. I am trying to launch my topcoder arena. Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar Exception in ...
0
votes
0answers
181 views

Configuration of $QTDIR

I installed Qt from ubuntu repository. I'm on Trusty. Now I use a another program who need $QTDIR but when I enter echo $QTDIR, the terminal output nothing. How to set up this path without ...
1
vote
1answer
256 views

Where are the Build and Src locations for QtCreator?

In the QtCreator Plugin Creation Wizard, this http://doc.qt.digia.com/qtcreator-extending/images/firstplugin-pluginsetup.png window asks for Qt Creator Sources, and Qt Creator Build. I installed ...
1
vote
0answers
144 views

how to set mmap for better performance of raw socket

req.tp_block_size=96; req.tp_frame_size=96; req.tp_block_nr=2; req.tp_frame_nr=2; if ( (setsockopt(fd, SOL_PACKET, PACKET_RX_RING, (char *)&req, sizeof(req))) != 0 ) { perror("setsockopt()"); ...
2
votes
2answers
64 views

access to field's element via awk

I have the following columns: _111_ [555] _222_ [666] _333_ [777] _444_ [888] I want to access the 111 from _111_. or 888 from [888]. How to access the fields elements with awk.
1
vote
0answers
107 views

Simple voice chat over command line?

I will be using this for development. What I want is: No large proprietary blob overhead to accomplish this, like skype No account needed. So no skype account, no email, etc etc. Ability to run ...
1
vote
1answer
48 views

Pair Programming in Ubuntu SDK?

How do you do collaborative code editing, aka pair programming, in the Ubuntu SDK? I heard you can do this in Vim, and I wonder if the Vim functionality in QtCreator makes this possible.
1
vote
1answer
1k views

Installation and configuration of Java 3D in ubuntu

My java 3d project using netbeans is running fine in my windows environment. But when I run project in Ubuntu 12.04 it shows this exception: java.lang.UnsatisfiedLinkError: no J3D in ...
2
votes
1answer
60 views

How to print all coloumns using AWK

In AWK, is there a way to print all columns? I do not want to print them like this: printf($1 $2 $3 ...) Is there a way to print all of them?
0
votes
2answers
81 views

go on the line where a variable define on any editor

Is there any add-on or ability on geany or any known linux editor for this purpose : when you click on one variable . The mouse coursor goes to when it initialize. My code is c language. what I am ...
0
votes
1answer
66 views

Add notes on Geany

I have a code to which I do not like to add my comments and notes. But I need the ability to add my notes on that. So is there any thing to do that on Geany or do you need any another editor to do ...
1
vote
2answers
2k views

Customizing Texmaker

I use LaTeX a lot but I find quite obnoxious all the crappy files it leaves behind when you compile: .aux, .log... Fortunately TeXMaker has the option "clean" that deletes all of these. However, I ...
0
votes
1answer
49 views

Prove programs without installing ubuntu? only running with the cd?

I have a question, I would like to test a program in ubuntu to see if that works better in Windows 7 ("Android SDK"). But I do not want to install ubuntu on the pc, and do not want to use a virtual ...
4
votes
6answers
2k views

Which window has current focus?

I'd like to know (programmatically) which window has current focus. Is there a window-manager independent way of discovering that? Otherwise, how does one determine which window has focus in Compiz ...
2
votes
3answers
199 views

What is the best way to start developing ubuntu touch apps? [closed]

I'm a starting programmer and I can write c++ programs (nothing more or less). I want to get started with writing Ubuntu touch apps, but I have no idea were to start. Should I just jump into it, or ...
0
votes
1answer
136 views

What is the best way to run own server side programs on ubuntu server

If I make some server side programs with node.js / Java / Python what is the best way to run them and make them run every time I boot my server. Is crontab @reboot valid way to do this. If so how do I ...
4
votes
3answers
5k views

portable Virtual Machine

I'd like to create a virtual machine with virtualbox and use it on different computers. The problem is that I need to work on my programming projects on different machines and syncing them over the ...
0
votes
2answers
170 views

Need advice for programming languages for a custom GUI

I just transitioned from windows to Ubuntu and so far loving it. On my list of tasks is to develop a GUI interface for collecting data from a remote device through RS232, compile and display the ...
0
votes
2answers
846 views

Can't install libpcap0.8-dev:i386 to compile 32bit App under 64bit environment [closed]

I am writing a little program which uses libpcap and my target machine is i386, while my dev machine is x86_64. Now, when I install libpcap0.8:i386, which works, I get under /usr/lib/i386_linux_gnu/ ...
0
votes
1answer
99 views

Does Ubuntu have a clipboard that works differently from Windows?

Does Ubuntu have a clipboard that works differently from Windows? I've noticed an anomaly between the two, perhaps a bug, or perhaps I'm misusing the functionality. It works the same way every time ...
1
vote
2answers
333 views

apt-build on ubuntu, if I change processor will give problem?

I installed apt-build on Ubuntu, it is a program that compiles and installs programs. It compiles optimally for the user processor and this makes programs run quickly. But I thought what if I change ...
0
votes
1answer
384 views

how to get the address with /proc/kallsyms

cat /proc/kallsyms | grep "\ doexecve$" i run this command in ubuntu 13.04 in virtual box in order to get address. However, no result. How to get the address for kprobe debug
0
votes
1answer
41 views

Confusing Code, request help [closed]

I need help. I am recently coding a bash script, which I have 26 sets of variables. I'm stuck on this part which I need help with. I noticed when you install Ubuntu to check out this website if you ...
1
vote
1answer
147 views

Intel assembly language from Ubuntu

I just want to know if its possible to run assembly language programme, that I was running on windows os using tasm, on ubuntu (linux environment). I actually removed windows completely from my ...
67
votes
12answers
6k views

How to learn vim on a high level? [closed]

I know that vim (like emacs) is very powerful editor for programmers, as long as you know how to use it, its shortcuts, and so on. What steps can I take and what tutorials can I read to become an ...
3
votes
1answer
1k views

QML: How to do variables?

In QML, I am just looking for a way to do fairly simple variables: Bool String Integer
11
votes
2answers
11k views

Why won't strace/gdb attach to a process even though I'm root?

I logged in as root but strace gives me this: root@kyznecov-System:/home/kyznecov# ps -e | grep 111 3807 pts/2 00:00:00 111 3810 pts/2 00:00:00 111 root@kyznecov-System:/home/kyznecov# ...
1
vote
0answers
30 views

What are the steps needed to implement a Qt class or member function into a QML project for Ubuntu-Touch? [duplicate]

Qt contains many classes and functions that are useful for a QML project, but not readily available. The existing solutions do not employ a method that is platform independent, thus it is unclear ...
1
vote
1answer
32 views

scala language not avaible?

For another course I need the scala programming language. Is it right it's not avaible on the software center? if that is so, what is the best way to install it. Roelof
1
vote
2answers
93 views

How do I stop a daemon when the user logs out?

I wrote a daemon in C++ which is automatically started on login using a bash script placed in /etc/profile.d/ while running the install section of my makefile. The problem is that when I log out and ...
5
votes
1answer
1k views

QML: What is the difference between a Component, Element, Property, Attribute, and Object?

The reason why I ask, is that often languages define the same terms differently, and QML is fairly unique in some regards. A brief explanation or analogy is preferred, where as more extensive and ...
3
votes
2answers
268 views

How do I daemonify my daemon?

As part of the Ubuntu Accomplishments system I have a daemon that runs as well as a client that connects to it. The daemon is written in Python (using Twisted) and provides a dbus service and a means ...
0
votes
1answer
40 views

How does a graphical front-end control a daemon?

I'm developing a file sync daemon on Ubuntu as a hobby project, and I'm thinking I might want to develop a graphical front-end at some point which will let me control it. How can a GUI control and ...
3
votes
1answer
70 views

How does Ubuntu One know when to automatically sync files?

I am curious about how Ubuntu One automatic file sync works under the hood. When I add or change a file in my file manager, how does it know that the change occurred and it needs to sync it? This will ...
0
votes
1answer
126 views

problem with gcov, cannot run

So i'm trying to optimize a file called linpack.c. I have to use gcov to find the 10 most executed lines. I've been given these compiler options: -fprofile-arcs -ftest-coverage -O2 So i ran this $ ...
0
votes
2answers
349 views

line 45 Syntax error: unexpected end of file

Now no matter what I do it just always says that even with a fi it doesnt do that help me debug the code please. also this has 44 lines of text and it says line 45 also the ascii art is just a dog it ...
4
votes
7answers
5k views

Best editor for ubuntu [duplicate]

Possible Duplicate: Is there a Dreamweaver HTML editor replacement? Hello Can anybody suggest me the best editor for ubuntu(9.10) for programming purpose like dreamweaver.and also the ...
0
votes
1answer
525 views

How to combine quickly and my python program?

Firstly, I'm not sure if I'm allowed to ask this question. I'll delete it if it's not welcome. I'm after some guidance on how to start programming. Perhaps I need to start somewhere else, but I'm ...
7
votes
2answers
458 views

Reverse rendering of Urdu fonts

I am working on a project that is based on Urdu language in Ubuntu platform. I'm using Python language and have almost achieved my task. The problem is that, the Urdu text is rendered in reverse ...
0
votes
1answer
114 views

gedit:3457 Error: Not using units is deprecated. Assuming 'px'

I have an error with my first application which I don't understand : (gedit:3457): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1971:11: Not using units is deprecated. Assuming 'px'. ...
0
votes
1answer
102 views

Not getting output after dmesg

I am a beginner. I wrote a hello world module (actually copied from the o'Reilly book). the code is: #include <linux/init.h> #include <linux/module.h> MODULE_LICENSE("Dual BSD/GPL"); ...
0
votes
1answer
196 views

Simple GUI to display static text informations

I would like to know if there is a way to write or modify a simple program (I don't really care what language it'll use) that can be launched in GUI mode and will display formated text and URL that ...
2
votes
3answers
5k views

IDE/Compiler for C or C++ Programming [duplicate]

Is there any software that supports on C or C++ Programming? Then, if it so, how to run, compile or debug your own code to display its output via terminal(linux/ubuntu) or cmd(windows)
1
vote
1answer
419 views

Programming Java on Ubuntu 13.10 [duplicate]

I have ubuntu 13.10 and I am trying to use a disk that contains a book, How to program Java, 7th edition. It is the Linux version CD and I can't figure out what program to use so I can look at the ...
3
votes
2answers
428 views

DEB installer - Dependency Checks

Using a third-party install generation tool, I created a .deb package for my application. There are several dependencies that are required to be present on user’s Linux OS for my application to run ...
0
votes
1answer
39 views

Can someone recommend a Program able to show and execute XQuery and XPath on a XML document?

I'm searching for a program able to do Xpath and Xquery on XML, but I can't find one (I was using Oxygen XML editor on Windows 7 before). I was wondering if such a program exists for Ubuntu.
25
votes
2answers
4k views

How do I create a PPA for a working program?

Let's assume I have a working application written in C, C++ or Python. I want to create a Launchpad PPA so others can easily install it from a package. Please give step by step instructions for doing ...