Question2Answer doesn’t include built-in social authentication out of the box, but several community solutions make it straightforward to add OAuth integrations for Google, Facebook, Twitter, and OpenID providers. Modern Approach: Question2Answer Open Login The recommended path is using Question2Answer Open Login, a maintained plugin that handles multiple OAuth2 providers cleanly. This replaces the older Loginza…
MKV (Matroska) containers frequently contain multiple audio tracks. You can cycle through them during playback using keyboard shortcuts. Using mplayer Press # to cycle through available audio tracks while the video is playing. This works for MKV, AVI, MPEG, and other container formats that mplayer supports. mplayer video.mkv # Then press # during playback to…
Vim ships with built-in completion that many people don’t fully leverage. Before reaching for plugins, understand what’s already available: Ctrl+N / Ctrl+P: Basic keyword completion from open buffers and loaded files Ctrl+X Ctrl+F: Filename completion Ctrl+X Ctrl+]: Tag completion (requires ctags) Ctrl+X Ctrl+O: Omnicompletion (language-aware, when available) The omnicompletion (Ctrl+X Ctrl+O) is what resembles IDE…
By default, Vim searches case sensitively. You can match dog, Dog, DOG, and other case variations using one of three approaches. Using the ignorecase Option The simplest method is to enable the ignorecase setting: :set ignorecase Now /dog will match dog, Dog, DOg, and any other case variation. To disable it: :set noignorecase Add this…
MySQL Cluster uses NDB (Network Database) storage engine to provide high availability and data redundancy across multiple nodes. This guide covers installation and configuration on modern RHEL-compatible systems. Prerequisites Three or more servers (minimum: one management node, two data nodes, one SQL node) Rocky Linux 9 or AlmaLinux 9 Root or sudo access Static IP…
Taking photos with iPhone earphone remotes provides a practical way to reduce hand shake and camera blur, especially useful for self-portraits, group photos, or situations where you need stable hands-free operation. How to Trigger the Camera Press the volume-up button on your earphone remote to capture a photo. This works with the native Camera app…
The x86-64 architecture on Linux follows the System V AMD64 ABI calling convention. Understanding this is essential when writing assembly, optimizing code, debugging, or interfacing with C libraries. Register usage for arguments Integer and pointer arguments use these registers in order: RDI — first argument RSI — second argument RDX — third argument RCX —…
The strcmp() and strncmp() functions are fundamental string comparison utilities in the C standard library. Understanding their implementations reveals important aspects of character comparison, null-termination handling, and performance optimization. strcmp Implementation The glibc implementation of strcmp() performs lexicographic comparison of two null-terminated strings, returning: A negative value if the first string is lexicographically less than…
To enable debugging, configure your CMake build with CMAKE_BUILD_TYPE set to Debug. This tells CMake to invoke the compiler with the -g flag, generating debug symbols that tools like gdb and lldb need. From your project’s root directory: cmake -DCMAKE_BUILD_TYPE=Debug -B build cd build make The -B build flag creates a separate build directory, which…
There are several ways to determine a file’s size in C, each with different trade-offs. Choose based on whether you have a file descriptor, stream, or just the filename. Using stat() with a Filename If you know the filename, stat() is the most straightforward approach: #include <sys/stat.h> #include <stdio.h> int main(const char *filename) { struct…
ANSI C is the standardized version of C defined in 1989, specifying the language’s syntax and semantics formally through a grammar. Understanding this grammar is essential for building tools that parse, analyze, or transform C code. Grammar Basics The ANSI C grammar is defined using Backus-Naur Form (BNF), a notation for specifying formal grammars. The…
The claim that scanf is dangerous gets thrown around frequently, but the reasons aren’t always clear. Most people point to %s causing buffer overflows and recommend fgets as the solution. That’s part of it, but not the core problem. The real issues with scanf break down into two categories: string handling and arithmetic input. String…
Converting strings to long integers is fundamental in C. The standard library provides strtol(), strtoul(), strtoll(), and strtoull() for this purpose. These functions handle the conversion robustly and let you detect parsing errors through their return value and endptr argument. Function Signatures All four functions share a similar interface: long strtol(const char *str, char **endptr,…
If you’re evaluating hosting providers in 2026, the landscape has shifted considerably from the shared hosting dominance of the early 2020s. Before committing to a provider, understand what you’re actually getting and what limitations matter. Shared Hosting Limitations to Watch Traditional shared hosting providers like Hostgator, Bluehost, and Dreamhost still exist, but they come with…
WordPress’s Text/HTML editor can be extended with custom buttons for frequently used code snippets or shortcodes. This is useful for inserting boilerplate markup, custom shortcodes, or formatting helpers without manually typing them each time. Basic Implementation Add this code to your theme’s functions.php or a custom plugin: function add_custom_quicktags() { wp_add_inline_script( ‘quicktags’, “QTags.addButton(‘wiki_button’, ‘Wiki’, ‘[yadawiki…
Vim performs case-sensitive searches by default. If you search for error, it won’t match Error or ERROR. Here are several ways to enable case-insensitive searching. Toggle Case Sensitivity During Search The quickest method — append \c anywhere in your search pattern: /error\c This matches error, Error, ERROR, and any other casing. The \c flag applies…
Pasting external code into Vim often triggers unwanted autoindent behavior, adding extra indentation and breaking formatting. Vim’s paste mode disables all automatic indentation while inserting text, letting you paste code exactly as-is. Quick paste mode toggle Enable paste mode before pasting: :set paste Then paste your code. When done, disable it: :set nopaste This works,…
Google no longer displays author information in search results the way it did when Google+ existed. However, you can still control how your content appears in search results by using schema markup—specifically the author property in JSON-LD structured data. Current best practice: schema.org markup The modern approach uses JSON-LD structured data embedded in your page’s…
When you’re editing code in Vim and press Enter after a comment line, Vim automatically continues the comment on the next line. This is useful sometimes, but often gets in the way. Here’s how to disable it. The Basic Approach Add this to your ~/.vimrc: au FileType c,cpp setlocal comments-=:// comments+=f:// This works by: comments-=://…
Shortcut Action Ctrl+T Open new tab Ctrl+N Open new window Ctrl+Shift+N Open new Incognito window Ctrl+Shift+T Reopen last closed tab (Chrome remembers up to 10 closed tabs) Ctrl+1 through Ctrl+8 Jump to tab at specified position Ctrl+9 Jump to last tab Ctrl+Tab or Ctrl+PgDn Switch to next tab Ctrl+Shift+Tab or Ctrl+PgUp Switch to previous tab…