The Netwide Assembler (NASM) serves the purpose of both disassembler and assembler for "I-x86"(Intel) architecture. It can be used to write 16-bit, 32-bit (IA-32) and 64-bit (x86-64) assembly programs.
NASM was originally developed by Simon Tatham and co-worker Julian Hall.
It is open-source software. It hs (2-clause) "BSD" license.

There are many assembler programs, available such as −

• Microsoft Assembler (MASM)
• Borland Turbo Assembler (TASM)
• The GNU assembler (GAS)

In this tutorial we will be using Netwide Assembler(NASM).

Advantages of NASM assembler-

• Free and Open Source
• Well documented. Official webiste : https://www.nasm.us/
• Works on both Windows and Linux

To find bit extension of your Linux x86 architecture, Type the following code snippet in your terminal

Now let us begin setting up the environment for NASM.