Referencing this post I have successfully managed to get a Linux Device (A Raspberry Pi Model A+) to switch my Bluetooth 4.0 USB dongle into the ‘advertising’ state: or I verified this using an Ipod running the ‘LightBlue Explorer’ App. All good so far. From another Linux box (another …
update mongo 2.4 to 2.6
I want to upgrade my mongodb to 3.2, but when I try to upgrade to 2.6 I already get error What I do: I have a test VM with restored dump database from production sever. I download mongodb 2.6 and extracted. I run mongo from /tmp/mongodb-linux-x86_64-2.6.11/bin/mongo In console mongodb run use admin db.upgrade…
Understanding the behavior of grep [closed]
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. If you believe the question would be on-topic on another Stack …
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’…