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Tag: linux
An implicit try {} catch around main
In each of my main functions, I would like to catch certain classes of exceptions and convert them to exit codes. Is there a more elegant solution to this than starting and ending each main function with macros that will paste the implicit try {} catch I want? Can I somehow achieve this with the std::set_term…
LD_LIBRARY_PATH failing while trying to run Qt app
I want to run a Qt 5 based application usind dynamic libraries on Linux. In summary, a script will copy the executable and other relevant files, including all required .so inside a lib folder, to the desired destination and a script calling gksudo will work as caller to the app. Till now everything works fine…
Need help understanding C++ libraries, compiling, linking, header files for specific project
This is my first stab at C++, also I know that the question is broad but I have a specific example that I’m working with so hopefully that will narrow everything down a bit. I’m basically attempting to compile a C++ game manually in Linux (Ubuntu 14.04). The source code I am attempting to compile …
C++, addresses in array [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 7 years ago. Improve this question I have some sort of funny question about addresses in C++. I have such code: This code works…
Amazon linux AMI vs Ubuntu
I was given a project that was running on Amazon linux AMI, now I need to transfer project to Ubuntu server. I am more familiar with Ubuntu. I was wondering what would be the difference? Will the project work perfectly on Ubuntu? Answer Amazon Linux AMI is a red hat based distro so things like the package ins…
Vector Sum using AVX Inline Assembly on XeonPhi
I am new to use XeonPhi Intel co-processor. I want to write code for a simple Vector sum using AVX 512 bit instructions. I use k1om-mpss-linux-gcc as a compiler and want to write inline assembly. Here it is my code: However when I run the program, I’ve got segmentation fault from the asm part. Can someb…
Prevent output of carriage return with readline
I’m new to the Gnu Readline library. I need to call the readline() function when the cursor is at the very last line of the console. But I need to prevent scrolling down when the Return key is pressed; so I’m looking for a way to prevent the output of the carriage return : I’m sure it’…
How to use a sql DB for ssh?
I have a webapplication and I would like to provide the users with a feature to be able to ssh to the linux server without having to add all the users’ credentials from the Psql DB to the linux server. Instead I would like to use the credentials directly for ssh. I think that this is possible using linu…
linux read sys call doesnt get EOF
First of all sorry if my English won’t be fluent and clear. I’m working on understanding pipes and communication between processes. I have tried to implement two c programs, the one writes into a certain pipe from what he reads from the standard input and the other one waits until the pipe opens a…