Running binaries, command not found?

mosfet · 21 Oct 2008 at 17:35

Just started developing on linux to write a server app for a windows client but I'm having trouble running binaries I've created.

My server is using a reserved port (Port 80), so if I try to run it with the standard ./a.out command I get a permission denied error. That's all well and good - you need root access to open sockets on reserved ports.

What I don't understand is that when I sudo ./a.out I get a command not found error, despite the fact that I'm still in the same dir.

Am I going mad, or just being dense?

Thanks

Edit: Hmph, when I change it to an unreserved port it still gives me permission denied. Despite the fact that running from netbeans works happily.

JIM_BOB7813 · 21 Oct 2008 at 17:39

just type

Code:

sudo a.out

mosfet · 21 Oct 2008 at 17:42

My project directory isn't in $PATH$, so that just gives command not found aswell.

Usually that's the point of the ./a.out, but in this case it gives the same error.

JIM_BOB7813 · 21 Oct 2008 at 17:43

Does sudo work with anything else?

Also, does a.out have executable mode (+x)?
Try giving it the full path too, so sudo /home/me/a.out

mosfet · 21 Oct 2008 at 17:48

Right, chmodded it to +x.

Without sudo it won't run, with sudo it gives: ./a.out: 1: Syntax error: word unexpected (expecting ")")

Despite the fact that hitting run from within netbeans has no problem.

JIM_BOB7813 · 21 Oct 2008 at 17:51

try

Code:

 sudo sh a.out

mosfet · 21 Oct 2008 at 19:14

Same syntax error

JIM_BOB7813 · 21 Oct 2008 at 20:33

Can you use sudo with any other program/command?

mosfet · 21 Oct 2008 at 21:24

Yeah, no complaints here, works with existing shell tools like ls, cp, rm...

I'm sure it's me being a numpty, since I get the same problem on fedora, ubuntu and solaris.

JIM_BOB7813 · 21 Oct 2008 at 21:45

Ok, I was wrong, you do need to do dot slash

Code:

sudo ./a.out

But, it works fine for me. Maybe there's some restriction in your sudoers file?