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operating-system

What is the difference between user variables and system variables?

by IT Nursery

What is the difference between user variables such as PATH, TMP, etc. and system variables? I accidentally deleted the user variable PATH. What … Read more

Tags environment-variables, operating-system, path, windows

Programmatically get the cache line size?

by IT Nursery

All platforms welcome, please specify the platform for your answer. A similar question: How to programmatically get the CPU cache page size in … Read more

Tags c, caching, operating-system, systems-programming

What is the difference between Trap and Interrupt?

by IT Nursery

What is the difference between Trap and Interrupt? If the terminology is different for different systems, then what do they mean on x86? … Read more

Tags cpu-architecture, interrupt, kernel, operating-system, x86

How do I check the operating system in Python?

by IT Nursery

I want to check the operating system (on the computer where the script runs). I know I can use os.system(‘uname -o’) in Linux, … Read more

Tags linux, operating-system, python

Why is Linux called a monolithic kernel?

by IT Nursery

I read that Linux is a monolithic kernel. Does monolithic kernel mean compiling and linking the complete kernel code into an executable? If … Read more

Tags architecture, linux-kernel, operating-system

How to find the operating system details using JavaScript?

by IT Nursery

How can I find the OS name and OS version using JavaScript? 17 Answers 17

Tags javascript, operating-system, user-agent

How do I check OS with a preprocessor directive?

by IT Nursery

I need my code to do different things based on the operating system on which it gets compiled. I’m looking for something like … Read more

Tags c, c-preprocessor, conditional-compilation, operating-system

How to run a program without an operating system?

by IT Nursery

How do you run a program all by itself without an operating system running? Can you create assembly programs that the computer can … Read more

Tags assembly, bootloader, operating-system, osdev, x86

What resources are shared between threads?

by IT Nursery

Recently, I have been asked a question in an interview what’s the difference between a process and a thread. Really, I did not … Read more

Tags multithreading, operating-system, process

What languages are Windows, Mac OS X and Linux written in?

by IT Nursery

I was just wondering who knows what programming languages Windows, Mac OS X and Linux are made up from and what languages are … Read more

Tags linux, macos, operating-system, programming-languages, windows
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