Linux is a popular, open source operating system kernel. Linus Torvalds started development of the kernel in 1991.

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What are some feasible ideas for building a smart-device/console development portfolio? [closed]

I would like to start getting more contracts in the mobile, smart-device, and console development space and, having little prior work experience in the field, I need to build a portfolio of example ...
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1answer
278 views

How to deploy a heterogeneous server application to customers?

We have a bigger application server which customers would like to have deployed locally. It consists of an MySQL server database, a REDIS database, multiple Web servers for sub parts, a NGINX reverse ...
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1answer
99 views

How To Handle Previously Uploaded Files

I'm new to PHP and MySQL and I've only seen posts related to this on Zend and ASP so I'm looking for some advice to point me in the right direction for a LAMP project. I'm putting together a webform ...
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1answer
36 views

Possiblity to request several Linux threads scheduled together (in the same time)

I'd like to be able to request Linux to schedule two or more threads in the same time. I mean today when my multi-threaded program is being executed I know that in worst case only one of my threads is ...
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3answers
91 views

Can I easily paralellize this script?

I have a script that compares in some way each line from file1 and file2, and outputs the lines if there is a difference. I want to make it faster - right now it's in Python. I could use threads, but ...
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71 views

How to go about a remote shutdown program?

i've been wrapping my head around this and I want some ideas. How would I go about making a remote shutdown program for one computer to shutdown another? Would I use http or another protocol? I was ...
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1answer
63 views

Best way to update driver data from userspace

I have a userspace application which interacts with a kernel-space driver in a Linux environment. The driver, in this case, is an LED driver. In typical *nix fashion, the driver exposes a file in /sys/...
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1answer
254 views

What is the proper way to use an IDE to work on remote code?

One of the code bases I work on has a development environment that is running on a dev server and cannot be copied over to my PC to locally test and develop. I am wondering what is the proper way to ...
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1answer
446 views

Creating a custom GUI. App/DE/WM?

I am starting with this project of mine of writing a custom UI for linux. What would happen is: The computer would boot into this UI which would not be the typical taskbar/icons/startbutton kind of ...
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14 views

Update Mechanism for Web-Application embedded on Linux SBC

For one of my current projects (that will later turn into a commercial end product) I was looking for a way to perform updates to the software and I came up with the following solution: Details to ...
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0answers
31 views

using pthread_cond_broadcast with no mutex or waiting thread?

Assuming some pthread_cond_t condvar; properly initialized with pthread_cond_init am I allowed to pthread_cond_broadcast it without any mutex locked and thread blocked with pthread_cond_timedwait on ...
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1answer
53 views

Overwriting a C system after exec? [closed]

So I used wrap to override the malloc call in my program, I didn't think that if I exec'd another it would work, and it didn't. I figure this is because it wasn't linked with my program. How could I ...
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28 views

Monitoring interfaces and subscribing to multicast on them

How can a program enumerate the available IP interfaces, and monitor changes in them, to subscribe to and send IP multicasts on all of them? I ask because I am troubleshooting a problem with the ...
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0answers
73 views

A callback for when data is received?

So, my understanding is that the Kernel could receive TCP at any time, and that generally a C program asks the Kernel synchronously/asynchronously if it has data available. Would it be possible for a ...
0
votes
1answer
85 views

How to package a SDL2-based Linux app?

I've written a small toy application using SDL2. I want to distribute it the most user-friendly way, for Linux. I should make a deb package, but then I should also make packages for other distros, ...
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613 views

Best way to signal all child processes to terminate using C

I have been assigned the task of designing a simple web server using C in my UNIX & C class. The webserver listens and forks when a successful connection is made so that multiple clients may be ...
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1answer
300 views

Are ANSI* Escape Sequences Proper For Coloring Text in Terminal(Linux)?

I just switched back to Linux after a few years of Windows use and am wondering if ANSI Escape Sequences are okay for coloring text. I ask because the way I did it on windows isn't capable of crossing ...
-1
votes
1answer
582 views

How to reconstruct this application using design pattern

I am engaging in redesigning a linux c++ server application. The application acts as file relayer in the form of receiving file packets (incuding control packets and data packets) from client A, ...
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1answer
263 views

Linux kernel development

I am trying to understand the linux kernel and there is one thing that is puzzling me for quite a while. As linux is used across variety of platforms (like smartphones,desktop,supercomputers etc) and ...
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1answer
2k views

Belkin device runs Linux, how can I create my own custom firmware for it? [closed]

The Belkin N300 F9K1002 firmware is located here. It does not appear to be encrypted. How can I upload my own custom Linux firmware to this device. How would I go about hacking it?
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2answers
109 views

How to write code for different versions of linux

So, I've written some fairly big code for cent OS 7.1. The code essentially makes use of different command line tools by parsing the text output and shoving it in a database... pretty straight forward....
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votes
3answers
394 views

Programming in Linux (C++) [closed]

So I don't know If this is the right place to ask this. I am new to programming, I am not very in to it (I know classes,arrays,functions..etc(Basic Things)). I was programming with Visual Studio 2013 ...
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2answers
33 views

Using Python to start up multiple programs simultaneously

I am attempting to write a python script that with remove some of the tedium of my everyday actions. Specifically, I always need to run Eclipse, Java VisualVM, and a docker container. I had planned ...
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3answers
482 views

Why should PHP developer use/learn VI editor? [closed]

Why should PHP developer use/learn VI editor ? I mean there are 10 most amazing editors like PHPStorm, Netbeans which increases developers productivity. Lets just consider PHPStorm. I never got ...
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votes
2answers
466 views

Best x86 processor(computer) to learn computer architecture and assembly [closed]

I'm planning to build a computer as a hobby from scratch, with the least basic hardware possible in functionality so I can learn the basics of computer architecture and assembly language. I already ...
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votes
1answer
78 views

dma allocation in kernel 4g patch theory [closed]

I was reading about that that old patch. The summary of that link is to create a 4Gb kernel space, instead of 1Gb by default. Since many dma capable devices can only access 32 bit addresses or 4Gb, ...