09:30:54 (31.81 KB/s) - `a_binary' saved [6645/6645]

rootthisbox@jello:~$ ./a_binary
-bash: ./a_binary: Permission denied
rootthisbox@jello:~$ chmod 777 a_binary
rootthisbox@jello:~$ ./a_binary
-bash: ./a_binary: No such file or directory
rootthisbox@jello:~$ ls
a_binary  new.txt  public_html  rshadow  wired  www