Execute a system command: Difference between revisions

=={{header|x86 Assembly}}==

{{works with|NASM}}

{{works with|Linux}}

32 bit

<lang asm>

; Executes '/bin/ls'

; Build with:

; nasm -felf32 execls.asm

; ld -m elf_i386 execls.o -o execls

global _start

section .text

_start:

mov eax, 0x0B ; sys_execve(char *str, char **args, char **envp)

mov ebx, .path ; pathname

push DWORD 0

push DWORD .path

lea ecx, [esp] ; arguments [pathname]

xor edx, edx ; environment variables []

int 0x80 ; syscall

.path:

db '/bin/ls', 0x00

</lang>