Hello, world!

helloworld.asm

@@ -0,0 +1,17 @@
+; Hello World Program - asmtutor.com
+; Compile with: nasm -f elf helloworld.asm
+; Link with (64 bit systems require elf_i386 option): ld -m elf_i386 helloworld.o -o helloworld
+; Run with: ./helloworld
+
+SECTION .data
+msg     db      'Hello World!', 0Ah     ; assign msg variable with your message string
+
+SECTION .text
+global  _start
+
+_start:
+    mov     edx, 13     ; number of bytes to write - one for each letter plus 0Ah (line feed character)
+    mov     ecx, msg    ; move the memory address of our message string into ecx
+    mov     ebx, 1      ; write to the STDOUT file
+    mov     eax, 4      ; invoke SYS_WRITE (kernel opcode 4)
+    int     80h