sudo apt-get install nasm

这样nasm就安装好了，终端输入命令：

nasm -version

输出版本信息就说明安装成功

创建"hello.asm"文件：

touch hello.asm
gedit hello.asm

在文件中输入下面的汇编代码

section .data
  hello:     db 'Hello world!',10    ; 'Hello world!' plus a linefeed character
  helloLen:  equ $-hello             ; Length of the 'Hello world!' string
                                     ; (I'll explain soon)

section .text
  global _start

_start:
  mov eax,4            ; The system call for write (sys_write)
  mov ebx,1            ; File descriptor 1 - standard output
  mov ecx,hello        ; Put the offset of hello in ecx
  mov edx,helloLen     ; helloLen is a constant, so we don't need to say
                       ;  mov edx,[helloLen] to get it's actual value
  int 80h              ; Call the kernel

  mov eax,1            ; The system call for exit (sys_exit)
  mov ebx,0            ; Exit with return code of 0 (no error)
  int 80h

保存后退出。

编译

nasm -f elf64 hello.asm

如果是32位系统就把elf64改为elf32

链接

ld -s -o hello hello.o

运行

./hello

终端输出“Hello，world!”就没问题了