What is the best Distributed Brute Force countermeasure?

First, a little background: It is no secret that I am implementing an auth+auth system for CodeIgniter, and so far I'm winning (so to speak). But I've run into a pretty non-trivial challenge (one...

Why code segment is common for different instances of same program

I wanted to know why code segment is common for different instances of same program. For example: consider program P1.exe running, if another copy of P1.exe is running, code segment will be common...

What's the proper way to install pip, virtualenv, and distribute for Python?

Short Question What is the proper way to install pip, virtualenv, and distribute? Background In my answer to SO question 4314376, I recommended using ez_setup so that you could then install pip...

Apache commons daemon "Failed creating Java" error

I'm trying to start a Windows service using the Apache commons daemon. It works on Windows XP, but I'm trying to run it on Windows 7 x64. It fails to start and I get the following error in the...

Is memory allocation a system call?

Is memory allocation a system call? For example, malloc and new. Is the heap shared by different processes and managed by the OS. What about private heap? If memory allocation in the heap is...

How to install rmagick gem on Windows?

How do I install rmagick gem for Windows XP? I already installed ImageMagick with the header files, and I installed RailsInstaller.org which comes with DevKit. I don't know where to look to fix...

Setting DEBUG = False causes 500 Error

Once I change the DEBUG = False, my site will generate 500 (using wsgi & manage.py runserver), and there is no error info in Apache error log and it will run normally when I change debug to True...

issue with starting java web start application on linux

Operating System: Linux version 2.6.18-308.1.1.el5 ([email protected]) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-52)) #1 SMP Fri Feb 17 16:47:13 EST 2012 Java Version: Match:...

"zero copy networking" vs "kernel bypass"?

What is the difference between "zero-copy networking" and "kernel bypass"? Are they two phrases meaning the same thing, or different? Is kernel bypass a technique used within "zero copy...

How to disassemble one single function using objdump?

I've got a binary installed on my system, and would like to look at the disassembly of a given function. Preferrably using objdump, but other solutions would be acceptable as well. From this...

How can I test my Bash script on older versions of Bash?

I'm working on a Bash library and want to ensure I'm supporting as many environments as possible - including old installations of Bash. My development environment is Bash 4.3, but some of my users...

Conditional insert with Spring JPA / Hibernate

I'm working on a project that runs in a clustered environment, where there are many nodes and a single database. The project uses Spring-data-JPA (1.9.0) and Hibernate (5.0.1). I'm having trouble...

"read-only file system" error when pulling Docker image

I am trying to install Splash for Scrapy. According to its installation documentation, first of all Docker has to be installed. This has been successfully done. Then I launch the Docker Quickstart...

Unable to get memory map using e820

I am writing a very basic kernel and for getting physical memory map, I used code from osdev global do_e820 do_e820: xor ebx, ebx ; ebx must be 0 to start xor bp, bp ; keep an...

Can html5 camera inputs work on Windows 10 tablets?

TL;DR Can html5 camera inputs work on Windows 10 tablets? Details Device: Dell Venue 8 Pro tablet OS: Windows 10 Browser: Chrome Setup Create and host a page with the following html and open in...

MySQL Workbench host mismatch

I already installed MySql Workbench 6.3 in my laptop with an operating system of windows 10, but when I created a connection and open it there is an error which is Could not acquire management...

How to extract and re-import NTFS metadata?

I have a bunch of files on my HDD which contains metadata information that I use to sort huge collections of files(Information such as Year/Artist/Rating/Comments and whatnots) I would like to be...

"UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure." when plotting figure with pyplot on Pycharm

I am trying to plot a simple graph using pyplot, e.g.: import matplotlib.pyplot as plt plt.plot([1,2,3],[5,7,4]) plt.show() but the figure does not appear and I get the following...

Processes are running slow in docker container on ubuntu 18.04

Processes are taking time when running them in a docker container on ubuntu 18 machine. But the same process with the same docker version is running fine on ubuntu 16 machine. I have a node...

How can I detect if my Flutter app is running in the web?

I know that I can detect the operating system with Platform.isAndroid, Platform.isIOS, etc. but there isn't something like Platform.isWeb so how can I detect this?

What is the fastest way to check whether a directory is empty in Python

I work on a windows machine and want to check if a directory on a network path is empty. The first thing that came to mind was calling os.listdir() and see if it has length 0. i.e def...

google-chrome Failed to move to new namespace

Im trying to run google-chrome --headless inside a docker container as a non-root user to execute some tests. Everytime Im trying to start it, it throws following error: google-chrome...

Execute SSM documents using boto3 aws multi account support

I was implementing centralized multi-account patching with AWS Systems Manager Automation. When operating in the console and using the "Automations" section of the SSM, you can indeed point to...

how to show swagger ui for kubernetes api?

I installed kubernetes use kubeadm and the kube-apiserver started successfully. My computer's operating system is Centos 7. Command like these: kube-apiserver ...

VirtualBox .vdi file to BOOTABLE .iso

I saw a few solutions for that question but non of them was working for me. My goal is (pretty obvious) to make a custom made OS and make it bootable from USB. The solution must work for both...

Shopify Node Server command don't working

I need to develop app with node/react and embed it into shopify. I installed shopify cli properly, from installed cli i created new app. When i type shopify node server command on terminal, i get...

NSPersistentCloudkitContainer Memory Leak -> Crash? (iOS 15 beta 4, 5, 6 & 7...)

This is a copy of a thread I've created on Apple's Forum here Background I have an established app in the App Store which has been using NSPersistentCloudKitContainer since iOS 13 without any...

receive "Error reading from database" when changing profile's email address in Moodle 3.11.2

I'm a Moodle administrator that I recently changed the site's operating system from Centos to Ubuntu and also upgraded the version of Moodle from 3.9 to 3.11.2. Everything was going well until I...

How can I find the Windows product name in Windows 11?

Windows 11, released yesterday, reports itself as Windows 10.0 just about everywhere - RtlGetVersion says 10.0, and if you ask VerifyVersionInfo if you are 11.0 or greater, it says no. There seems...

"Theming Icons" functionality crashes live wallpapers on Android 12

I recently noticed that my live wallpaper apps are crashing when users try to set the newly introduced "Theming Icons" functionality on Android 12. This new functionality calculates a palette of...