Hello, world! - Assembly in Linux

One program which I like most. This would be my first program in any language which Im learning. Because, this helps me to setup that programming environment and also which gives me a lot of confidence :)

 ## hello-world.s

 ## by Robin Miyagi
 ## http://www.geocities.com/SiliconValley/Ridge/2544/

 ## Compile Instructions:
 ## -------------------------------------------------------------
 ## as -o hello-world.o hello-world.s
 ## ld -o hello-world -O0 hello-world.o

 ## This  file is  a basic  demonstration of  the  GNU assembler,
 ## `as'.
 
 ## This program  displays a friendly string on  the screen using
 ## the write () system call
########################################################################
 .section .data
hello: 
 .ascii  "Hello, world!\n"
hello_len:
 .long  . - hello
########################################################################
 .section .text
 .globl _start
 
_start:
 ## display string using write () system call
 xorl %ebx, %ebx  # %ebx = 0
 movl $4, %eax  # write () system call
 xorl %ebx, %ebx  # %ebx = 0
 incl %ebx  # %ebx = 1, fd = stdout
 leal hello, %ecx # %ecx ---> hello
 movl hello_len, %edx # %edx = count
 int $0x80  # execute write () system call
 
 ## terminate program via _exit () system call
 xorl %eax, %eax  # %eax = 0
 incl %eax  # %eax = 1 system call _exit ()
 xorl %ebx, %ebx  # %ebx = 0 normal program return code
 int $0x80  # execute system call _exit ()

Of course, credits goes to the author.