Linux is a Free (libre), Open Source, Unix-like operating system.

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9
votes
2answers
291 views

Minimalistic rmdir

In my eyes most of the GNU stuff is bloated and doesn't really fit my view of how a Linux environment should look like. I have come up with my own minimalist implementation of the GNU Coreutils, but ...
4
votes
1answer
29 views

Script to fix audio level

I need to fix and maintain the master volume in PulseAudio (so that I don't blow up my speakers). E.g. call gfaaudio -v 25 to fix volume at 25%. Is there a cleaner ...
-1
votes
0answers
14 views

TFTP Server writen in C for Linux [closed]

So I had to write a TFTP server (just for education purposes) app that uses fork(). The files should be stored on the RAM. Here is my code: http://pastebin.com/Y1VALbBH I used ...
10
votes
2answers
91 views

Parsing of a (Linux) netlink hotplug uevent packet

The netlink service is used, among other things, to notify userspace about hotplug events (e.g. "a device has been connected"). These events come in the form of packets, which follow the following ...
3
votes
2answers
94 views

Group and send all files to filetype folder

I have around ~2M of files in one folder, which I need to manage. So, I want to separate them in groups by their filetypes. Example: filenames ...
10
votes
3answers
353 views

Parsing ARP cache in C

How can I make this better? ...
3
votes
1answer
37 views

Perl script to check disk usage

I'm looking for input on the code itself and formatting/style. This script parses the output of df -h on a Linux server and emails the user if the usage percentage ...
2
votes
0answers
49 views

Linux-based WiFi AP daemon [closed]

I've written this small Linux-based daemon to create a WiFi AP that should work across various distros like Ubuntu, Fedora, etc. I'm not a great expert in Python, nor do I know that the various ...
-2
votes
1answer
27 views
4
votes
1answer
23 views

Generic Makefile

I decided to setup a generic makefile to compile SFML programs, as I'm going to be making a bunch of small apps over the next few weeks playing around with it. I'm still new to writing makefiles ...
5
votes
2answers
82 views

Small bash script to start and stop named services

I've been working on ubuntu since many years but not quite familiar with bash scripting. My development tools involve servers like nginx and apache, the mysql database and beanstalkd. Obviously, I ...
5
votes
2answers
75 views

Benchmarking our LAMP servers with this php script

I've written a small script to benchmark our LAMP hosted servers that assess the performance based on three factors: Disk I/O Database I/O (mysql) Database I/O (sqlite) The logic is as follows: ...
2
votes
1answer
39 views

Optimizing string replacement program that uses recursion

I have the following string replacement program for a string of size 256: I am replacing the string "\'" with the string ' Please suggest any modifications if needed or any ...
3
votes
1answer
115 views

Converting from std::wstring to std::string in Linux

I was bothered by inability of C++ to mix cout and wcout in the same program - so I've found this question: Converting between ...
2
votes
1answer
25 views

IPtables for webserver with ssh

I've had a bit of help but I'm still a bit unsure. I have an nginx webserver with SSH only required. I wrote this rule set based on information I found on the internet: ...
3
votes
0answers
113 views

Is there a better way to copy into two different folders on a machine simultaneously?

I am trying to copy files from machineB and machineC into machineA as I am running my below ...
3
votes
0answers
77 views

How to copy files as fast as possible?

I am running my shell script on machineA which copies the files from machineB and machineC ...
2
votes
0answers
128 views

Script for obtaining images from an IP security camera

I am fairly new to Python and programming in general so I hope the code in this post is not too messy. I have the following code which I use for taking images from an IP security camera: ...
10
votes
1answer
136 views

Set of wrapper functions for POSIX signal APIs on Linux

Please feel free to comment on the accuracy/validity of the following wrapper source for processing signals using the new POSIX sigaction API. If you feel I'm doing anything wrong or potentially ...
3
votes
1answer
78 views

Finding world-writable files in local directories only

Over at Stack Overflow I asked how to scan a local filesystem ignoring all remote mount points. I only really wanted a push in the right direction and received it. After clacking away on my keyboard I ...
4
votes
2answers
72 views

Packaging a single-file Python copy-tool

I'm currently working on a very simple one-file project: Lumix provides the possibility for the camera TZ41 (and others) to load GPS data and tourist information from a DVD to a SD-card so that you ...
3
votes
1answer
96 views

Ping Pong Pi - A ping pong score and serving manager

I have spent a few hours on this code, but think it could be improved a bit. It requires eSpeak to be installed to run the speech synthesis, but the voice can be toggled on or off using the ...
11
votes
1answer
266 views

Linux NASM assembly linked list implementation

Inspired by all of the lovely linked lists lately, I decided to implement one in assembly language. This code maintains two linked lists - one is a free store and the other is the active linked list. ...
5
votes
2answers
89 views

VLC media player watchdog daemon v6

This question is a follow-up to a previous version of this program, which I wrote because I found it annoying that VLC Media Player (which I love) prevents the screensaver from starting after playback ...
8
votes
3answers
172 views

Iptables Lockdown

I have nginx serving files with uwsgi and I wanted to lock my server down just to allow SSH and Nginx to run. This is what I have: ...
9
votes
3answers
312 views

Bash script that updates Intel e1000e driver

I am now writing a small bash script that updates an Intel NIC driver to the latest version from the official website. Is there any way to improve\simplify the script? I want to avoid a lot of ...
7
votes
1answer
147 views

Bash script - automate an upload image + description process on a server

I was tasked at work to improve a system where through a web interface a client, which eventually became us, uploads a bunch of images with descriptions (latter coming from csv files), the images are ...
5
votes
2answers
1k views

Running a shell command and getting output

This is the code I'm currently using to run a shell command on the current machine, intended for use only with GNU/Linux at the moment: ...
13
votes
1answer
137 views

Regular backup/snapshots

A (long) while ago I set up a file server in my basement running Linux. I am OCD when it comes to backups. I set the server up with (remember, this was a while ago): disk for OS disk for 'valuable' ...
1
vote
1answer
181 views

Automate a dependency graph with parallel programming [closed]

I found a C/Linux exercise in a book, and I propose a code as a solution, please feel free to correct it. Here is the exercise : Taking into consideration the following dependency graph, which ...
1
vote
1answer
194 views

Interactive menu system in Bash [closed]

This is a simple loop menu script that I have for class. The goal was to make a menu with applicable commands. Menu: A. Greet me. (Greet the user by their username (using the whoami ...
2
votes
0answers
51 views

Synchronize 3 processes with fork() [closed]

I was given the following exercise in my university: Given 3 processes: d1 - print("I"), print("D") d2 - ...
6
votes
1answer
408 views

Correctness of calculations with struct timespec

I've noticed some discrepancies in timings in our system, and I'm trying to narrow down what could be causing them. I'm reviewing out time abstraction, and as far as I can determine it's fine. Am I ...
8
votes
1answer
183 views

VLC media player watchdog daemon

I'm looking for bugs, ways to make it more portable or standardized, improvements of any kind. Seems to do what it is supposed to on my Ubuntu 12.04 PC. ...
6
votes
1answer
270 views

Calculate query coverage from BLAST output

I have a BLAST output file and want to calculate query coverage, appending the query lengths as an additional column to the output. Let's say I have 2 7 15 ...
16
votes
4answers
1k views

Recording audio in C

This is a program I wrote as a .wav audio recording library for Linux. It was developed on a Raspberry Pi, so that may affect the dependencies required.(1) Here ...
8
votes
2answers
149 views

Self-mutating C (x86_64)

As a learning exercise I wrote a short C program that changes the instructions of a function at runtime in order to execute a shell. It's obviously dependent on x86_64 architecture and Linux (for the ...
6
votes
2answers
121 views

Batch rename flac files

This is my first real program in python (and my first real program) and I would like to have input by some more advanced programmers on the code, on the writing style and on the amount of comments (is ...
2
votes
1answer
155 views
0
votes
2answers
67 views

Optimize this path location script?

Example Script is located in /home/insp/public_html/deploy/ I want to return the /home/insp/ section ...
-2
votes
1answer
45 views

Listing daemons from Linux [closed]

I have this code that lists daemons from Linux. I use /proc filesystem to get the data that I want to read: This is the file structure: ...
4
votes
4answers
81 views

apt alternative for proxy environment with bash shell

As I am new to bash scripting, and want to use apt-get in my university. I know that many people have issues when trying to do so. My focus is simplicity and ease of use, but still need to be ...
2
votes
1answer
239 views

Bash to find all placeholder variables in a file and replace will real variables

I am looking to make a generic config file using variables such as: $PLACEHOLDER_USER Then after moving the file into the correct position I want to replace every instance of *$PLACEHOLDER_VARIABLE* ...
2
votes
1answer
216 views

Bash script to set up an ad hoc wireless network

This script creates an adhoc network using hostapd. I have tested it and seems to work reliably. I am new to linux networking and not sure if this is a recommended way to create an adhoc network this ...
3
votes
1answer
550 views

Moving and organizing files in download folder

This is a Python script that I use on my Android tablet. It moves the files in the Download folder to a folder on the external SD card. The files are sorted based ...
3
votes
2answers
150 views

Simple linux char driver, am I following recommended and modern idioms?

Since the resources I found to learn are generally out of date, I'm having to read a lot of documentation, which makes the learning process somewhat haphazard. The module makes a simple character ...
4
votes
1answer
217 views

Is this CPUID parser ideal for any usage?

NOTE: I'm not perfectly sure of some of the parsed data, so any corrections are more than welcome. Parser (cpuid.c): ...
3
votes
1answer
406 views

Object-oriented Linux networking library

I needed to perform network communications in my Linux C++ project. I thought that it was a good idea to operate on a higher level of abstraction than raw system calls. Also I love OO design. So I'm ...
7
votes
3answers
694 views

x86 strcpy - can this be shortened?

I got about 4 days of assembly knowledge so, I need a review on this strcpy function and if it can be done better (At least I have the feeling). Full code (with the test included): ...
6
votes
1answer
165 views

Push backup script

I just wrote a little bash script for rsync push backups of my laptop to my Synology-Diskstation at home. Since I am a bash beginner and don't have any experience with ...