My aim is to create cross-platform C++ python modules. I’m usingCyther (cross-platform The Cross-Platform Cython/Python Compiler). Cyther uses GCC to compile modules and gives the user the ability to add GCC command-line args. So, I need run compiler on Windows, but compile for Linux. What args I must p…
Tag: linux
How to map buttons in html to running an executable file
This is my html code. I’d link to map those buttons to 2 executable files to switch on and off led in wandboard. How will i do it? Answer According to your comment the LED is connected to the Server while you try toggle it from a client. Since the HTML Page you send to the client is then rendered
PHP hang issue with passthru()/system() call and output buffering
I do have a strange problem. I’m trying to get around output buffering in PHP to run system() calls and get instant output. It works very well, but for some strange reason, the ping command on “test.de” isn’t presenting instant output as the ping on google.de does. I do see the first l…
Calling Matlab on a linux based Cluster: matlab sessions stops before m file is completly executed
i’m running a bash script that submits some pbs Jobs on a Linux based Cluster multiple times. each Submission calls Matlab, reads some data, performs calculations, and writes the results back to my Directory. This process works fine without one exception. For some calculations the m-file starts, loads e…
Cython standalone executable on ubuntu
I want my cython program to be standalone executable on linux, not to be imported. After cython –embed i got a c file,now how can i make it executable? Answer I guess you have to compile the .c file you have obtained. Assuming you are using python 3.5 and don’t have to link to other libraries than…
How/where to provide sudo password for Vagrant shell provisioners?
I am trying to build a Vagrant box (CentOS) that will be provisioned by an install.sh shell script. This script will do several things, the first of which, involves creating the correct directory structure under /opt so that my service can be installed there and do other things, like writing logs there, as we…
How To Avoid SIGCHLD error In Bash Script That Uses GNU Parallel
I’m running a script.sh in a loop. The script contains a parallel wget command. I’m getting the following error: The loop looks like this: And the line that is causing the error looks like this (omitting options and settings): Research: I’m not an expert with GNU Parallel, but the script see…
Check architecture for Linux and Mac
I’m trying to get the architecture of the computer executing my software, and so far it is working nice on Windows, but it fails on Linux and OSX. Let me show my current code: Linux and Mac always return “Processor is 32-bit”, so I guess that those environment variables are unused outside Wi…
SIOCGIWFREQ ioctl returning error 22 EINVAL – Invalid argument, why?
I am struggling to read current frequency channel of Wifi card using Wireless Extension Tools for Linux library with following Qt/C++ method: Now, iw_get_ext always returns -1 and errno is set to value of 22. I’ve taken a look at the errno.h and search for error 22 and I’ve got following error dec…
Printf makes program work in C, htonl and ntohl not working?
This is for a Linux system, in C. It involves network programming. It is for a file transfer program. I’ve been having this problem where this piece of code works unpredictably. It either is completely successful, or the while loop in the client never ends. I discovered that this is because the fileLeng…