Questions tagged [linux]

Linux is a high-profile computer operating system. The Raspberry Pi can run one of a number of Linux distributions, the most pupular being Raspbian (Debian-based) and Arch Linux.

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114 views

Is raspberry Pi Stable enough

I want to implement a SMS server which will be receiving the SMS messages sent from my devices all around the country. May be about 5 SMS per minute. I want to know if the RBP would be stable enough ...
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1answer
73 views

Help with Shell Scripts, creating a list of options for users [closed]

I am trying to teach myself to write Shell Scripts on my Raspberry Pi, but I am struggling to make a menu where a user can choose from these different options: display a list of current users display ...
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584 views

WiPi not going into monitor mode

Ok so on my raspberry pi using the WiPi I am trying to set it to monitor mode using. Sudo ifconfig wlan0 down Sudo iwconfig wlan0 mode monitor But it says SET failed on device wlan0; Device or ...
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2answers
132 views

What does T mean in file permissions?

I was wondering what the letter T means on the following results. $ ls -l /dev/mem crw-r----T 1 root kmem 1, 1 Jan 1 1970 /dev/mem I have changed the permissions and now I don't know how restore ...
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1answer
10k views

OpenVPN as a background process [closed]

i would like to run the OpenVPN service in the background. I have a script like this, that basically starts the Netherlands VPN of privateinternetaccess. vpn.sh sudo openvpn --config /etc/openvpn/...
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1answer
1k views

i have connected webcam to raspberry pi and now i want to get mpeg stream from webcam to my Laptop ?

i have used creative webcam and connected to raspberry pi for the purpose to receive mpeg real-time stream from that webcam to my laptop or on android cell-phone but when one of my classmate installed ...
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2answers
6k views

Xlib: extension “RANDR” missing on display “:1.0”

I'm trying to run openvibe-designer on my raspberry pie over vnc. Currently I am using Xvnc version TightVNC-1.3.9. All other applications that I've launched over vnc have worked. I only get this ...
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0answers
457 views

Processing keystroke input on startup

I am currently working on a project where I am using a Raspberry Pi (running Raspian Wheezy) to handle authentication to a locked door. I have a usb numeric keyboard plugged into my pi, and I have ...
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1answer
641 views

Wolfson audio card not working after rpi-update

Just used rpi-update to update the Pi and things went bad. Previously, was using the base Raspbian image with Wolfson drivers and that worked well. Suddenly, nothing. Alsamixer doesn't show anything. ...
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1answer
472 views

Configure a Raspberry Pi for wifi from an access point by USB wifi dongle

I'd like to be able to configure a Raspberry Pi to work as a wifi access point that loads an interface where users can choose the WiFi network to connect to. I've read the guides on how to make an ...
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1answer
570 views

Mobile to Raspberry PI audio streaming

I have trying to use the Raspberry PI + Wolfson to be an audio decoder and player. It would be the receiver for control/audio data for a specialized sound system. The PI would receive TCP packets from ...
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2answers
2k views

Raspberry unbootable after unexpected shutdown

I have a raspberry Pi, Model B. I installed Raspbian on the SD card and I would like to use it as a SVN server. The problem is that when it shuts down unexpectedly (i.e. there is a blackout, or DC ...
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1answer
167 views

AF_BUS on Raspbian

Dear RPI SO Community :), I want to try the AF_BUS Patch but I don't get what I need exactly for it. AF_BUS optimizes the performance of D-Bus in latency and throughput and I am working on a ...
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1answer
143 views

Auto Connect to Public Network and then “Accept TOS”

I have a video installation in a Museum for this summer. Currently there is a USB drive in the Pi that has an auto-login / bash.rc file to automatically play *.mp4 files in Omxplayer in order then ...
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1answer
62 views

Fresh Raspberry Pi with Ethernet only. How To?

I'm already spent a 2 hours for such How-To. I'm looking for instruction how to setup anything, actually Linux(Ubuntu/Debian) from my Host(Ubuntu) to my Fresh Raspberry Pi. I've bought it just a ...
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1answer
184 views

How much normal Linux can I do with OpenELEC?

I was thinking of using my RaspPI Rev B with some server type things, not too much CPU. It's the one computer in my house which is always on (everything else I have is a laptop or aggressively sleeps)....
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2answers
9k views

RedHat distro on RPI?

Looking around for a RedHat (and the like) distro to run on the RaspberryPi (512MB RAM version), I came across RedSleeve, which has done the job of porting RH to the RPI architecture. They also ...
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2answers
1k views

Install tightvnc in arch linux raspberry pi

How do I install the tightvnc in the Arch Linux os on Raspberry Pi? Are the procedures and commands different?
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2answers
216 views

Writing an XBMC addon: how do I add a torrent to my home PC over LAN from RaspBMC?

I'm writing an XBMC addon using the xbmcswift2 framework. Building and navigating the GUI was fairly easy. I also wrote a scraper for vodo.net which will be displaying the available movies in the XBMC ...
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3answers
5k views

soft-float debian wheezy and debian wheezy

I've been instructed to load ubuntu on a raspberry file. I was told "The Ubuntu image for the Raspberry pi called ‘Soft-float Debian wheezy' Is that different from the Debian Wheezy I see on the ...
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3answers
11k views

What programming languages does the Raspberry Pi support? [closed]

As of now, I do not own a Raspberry Pi, but I really want to buy one. I really want to know what programming languages it supports. What programming lanaguages does it support, and does it support ...
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1answer
300 views

Raspberry pi as CAMAC controller

Has anyone ever tried using raspberry pi as a digital input/output card for high frequency (more than 100 MHz) digital signal? I am thinking about building a CAMAC controller, the interface to PC (I ...
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1answer
83 views

Setting up Raspberry Pi and want to install Linux OS

I just recently discovered Raspberry Pi. I just want to know, if I want to install Linux on the Raspberry Pi, do I need to download and extract the NOOBS file from a Linux PC? Or Can I just use ...
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1answer
200 views

Linux Script to login to Raspberry pi and run some scripts inside raspberry pi

This is my scenario, We have some sensors on different sites, these sensors are connected with some equipment having SIM cards in it to allow the internet connection. On the other hand, we have a ...
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2answers
11k views

How to interface raspberry pi and plc?

I am doing a project on controlling the plc by using raspberry pi. Any one please suggest some sample coding and tutorial regarding this project. am already finished a coding part to connect a control ...
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1answer
5k views

apt-get “cannot locate the package”

I was following a tutorial online so I can install a USB DisplayLink monitor, and it told me to type: sudo apt-get install git-core gcc-4.6-arm-linux-gnueabi I tried that, and it says it "cannot ...
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1answer
364 views

Is reboot command on Raspbian (Debian) reliable enough?

Is running "reboot" command enough to reliably restart the Raspbian (Debian) system if filesystem/hdd is ok? Will it work when there is an infinite loop in stop() function of rc script or if there ...
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1answer
5k views

print a character in the usb-serial port

Hello everybody and thank you for all the answers that you give me to solve this problems. Someone said me: This code print a word that I choose in the screen, but How to send or print an ASCII ...
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1answer
218 views

Transition to Embedded Linux like Pi from Microcontrollers [closed]

I am currently familiar with design/programming custom embedded systems using PIC Micro-controllers with various peripherals like I2C, SPI Flash, UART,ADC,etc with some additional analog processing ...
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0answers
4k views

How do I detect if a usb input device is plugged in?

I am using xboxdrv for my MAME controls, however I also want to use my arcade controls via the GPIO also. To do this, on boot up if a xbox controller is detected, I want to load the xboxdrv program, ...
3
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2answers
10k views

How do I restart a python program on my pi when it crashes? [closed]

I have a python program named endless.py. I want to restart it whenever it crashes, and write the time that it restarted, to a file named restartlog.txt. Here is my python code so far: import time, ...
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2answers
991 views

Does “/dev/null” writes data to SD Card before discarding?

I want to maximize my sd card lifespan and Im wondering if redirecting output to /dev/null will reduce my sd card life.
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1answer
1k views

Linux based cross compiler [duplicate]

I need an ARMv6 cross compiler for my B and B+ pis, primarily for building the kernel since this requires many hours on the pi itself and sometimes requires trial and error to get right. I would also ...
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1answer
62 views

How can I know if a network is secure before connecting to it? [closed]

before connecting to a network i want to know if it needs a password or not like in the network manager. The security of every network any commands will be welcomed
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1answer
1k views

how can we know and detect that we are disconnected from network? [duplicate]

after connecting to a network via wpa_supplicant I need a way to know if we are disconnected so we can connect again automatically.
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2answers
2k views

How can I control the PWM via the sysfs

I want to set the PWM for some tests with a tricolored LED. I want to be able to set it up via the sysfs interfaces but I'm having a very hard time finding any information on how to do this. What is ...
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1answer
3k views

Openssl + Raspberry Pi

if I code a program with openssl on a Ubuntu laptop will it work when it is compiled on the Raspberry Pi or are the libraries are different? does the command sudo apt-get install openssl work on ...
3
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1answer
95 views

Migrating part of existing system into a pendrive

I've had a 2GB SD card containing a Arch Linux installation running for a while now, and decided to buy a 16GB pendrive to extend its space. I've formatted it to ext4 to match the filesystem on the ...
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1answer
463 views

What is the best wifi adaptor available that's compatible with Kali Linux?

I've got Kali Linux up, but I'm thinking I don't have a compatible card. What is the most optimal setup regarding range, etc? What troubleshooting steps can I take to fix my incompatibility issues if ...
2
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2answers
8k views

Expand file system on USB on Raspberry Pi

Right now I'm using my Pi as a OwnCloud file server. I'm using a 16G usb stick as a boot disk because I wanted more speed and space. This have been working perfect until today, I now have a total of ...
2
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2answers
9k views

Get USB address

I have a FTDI USB-Serial (UART) IC connected to my Raspberry Pi. When I type lsusb I can see all my USB buses: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID ...
4
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2answers
409 views

How to cross compile large projects?

Read through the posts on the website, and tried many scratchbox2/qemu attempts. I am beat when it comes to compiling large projects, that have many dependences. I found it easy to compile a single .c ...
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3answers
179 views

Are there any `armv6j_hardfp` binary repositories for Gentoo?

Since the Raspberry Pi hardware is non-ambiguous, the point of compiling optimized to the individual machine is pretty moot, while I'd still like to use Gentoo on my Raspberry Pi due to uts excellent ...
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1answer
553 views

Folder structure of Wheezy help

I'm running Wheezy and connecting via SSH, and would like pointing in the direction of a document / tutorial to understand the folder structure; eg where the sys logs are etc.
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1answer
1k views

Hamachi Installation Fails

I'm trying to install hamachi on my Raspberry Pi. I had it installed previously but had to wipe the card after a failed update so here I am again. Every time I run the install script it fails. See ...
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2answers
3k views

nat in the iptables is not recognized

I am trying to set up my Raspberry Pi as a Man In The Middle device to monitor devices on my home network. When I try to forward port 80 to port 8080 (to allow the webpage to be loaded on the device) ...
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3answers
467 views

How do I Install Slackware on the Raspberry Pi?

How do I install the ARM version of Slackware Linux on the Raspberry Pi?
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1answer
877 views

Apache2 on Raspberry Pi: 403 Forbidden after changing web root/chown not working

So I'm pretty new to servers; I've been running websites off of 3rd party hosts, but I thought I might like to try it on my own for once. I got a Raspberry Pi running Raspian Wheezy, and I ...
37
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4answers
60k views

How can I mount a Raspberry Pi Linux distro image?

Normal filesystem images can be easily mounted: mount system.img /mnt Examined, and modified. But when I try this with a Raspberry Pi system image (e.g. raspbian), I get: mount: unknown filesystem ...
3
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4answers
4k views

Can Raspberry Pi Model B be used as JEE applications web server?

I have learnt how to develop web applications with JEE technologies, working in Eclipse IDE, using Apache TomEE server and MySQL database. Until now, I was using local server instance. I don't have ...