A reCAPTCHA widget is only the browser half of the control. This implementation verifies each short-lived, single-use token on the server, checks the expected hostname, handles failures safely, and layers reCAPTCHA with ordinary anti-abuse controls.
If you have written some code in C for the microcontrollers and want to measure time required … Read more
ARM does not have one universal set of “16 registers.” AArch32 exposes R0–R15, while AArch64 provides X0–X30 plus separate SP, PC behavior, status fields, vector registers, and system state. This reference connects the architecture to real function calls and debugging.
Installing the old `skypeforlinux` package is no longer a working solution: Microsoft retired Skype on May 5, 2025. Ubuntu users should move to Teams on the web or its PWA, handle any remaining Skype data, and remove the unsupported client.
In Last post “VIM : How to create a file and write contents using vim editor” we … Read more
Linux procfs exposes a live, file-like view of process state without creating ordinary files on disk. This lab starts a harmless C process, captures its PID, inspects the useful `/proc/PID` entries, and cleans up reliably.
A single GCC command hides several distinct transformations, followed later by Linux process startup. Saving each intermediate file makes macros, assembly, ELF objects, linking, and dynamic loading much easier to reason about.
A serial console lets you watch boot messages and log in when networking or video is unavailable. The connection is simple only after voltage, crossed TX/RX wiring, model differences, and console configuration are correct.
A Yocto image recipe describes the root filesystem and image features you want; the selected machine and BSP layers provide the board-specific kernel, bootloader, and hardware configuration. This walkthrough turns that relationship into a repeatable build you can maintain.
Moodle self-enrolment has two switches: the site plugin must be available, and an active Self enrolment method must exist in the course. Dates, keys, capacity, roles, and account state can still prevent enrolment.
Removing a Calendar block changes one page layout; it does not erase Moodle calendar events. Identify whether you are editing Site home, your personal Dashboard, or the default Dashboard before making the change.
In Moodle, Teacher is normally a course-scoped role. Enrol the account from the course Participants page, choose the least-privileged teaching role, and verify the resulting access before classes begin.
Submitting a site is not a promise of rankings or even immediate indexing. It gives Bing reliable discovery signals and gives you the diagnostics needed to understand what happens next.
The main Linux kernel versions comes from the Linux Torvald who is author of Linux kernel, from … Read more
If you want to install docker on ubuntu, follow below procedure, Above two commands will install docker … Read more
Below functions make sure we are safely and completely reading and writing from a file pointer fd, … Read more
As we seen in our last two posts “How to create git repository in Github” and “Starting … Read more
In our last post, we seen how to create a remote repository in github which actually uses … Read more
Today while trying to clone big repository using “git fetch” we encountered following error, “fetching iteration / … Read more
A debugger becomes useful when a crash that looked random becomes one source line, one call path, and one impossible value. Follow a complete GDB investigation from failure to verified fix.
Flutter is a new way to build high-performance, cross-platform mobile apps. If you are new to Flutter, … Read more
Perf is a profiler tool for Linux 2.6+ based systems that abstracts away CPU hardware differences in … Read more
As we have seen in “How to cross compile static dtc for ARM” we are able to … Read more
Sometimes it happens that you don’t have source code of the device on which you are working … Read more