popen：“ sh：权限被拒绝”

Question

I'm trying to use popen. When I execute some system command (eg let's say ls or whatever) all works fine. But when I'm trying to execute my executable:

pipe = popen("./ <path>","r");

I get an error: sh: permission denied.

Both executables (which uses popen and that one which I want to launch from first one) belong to my user accound and have "x" permissions.

Answer 1

I'd double check that error message, since it should say what the permission denied relates too. ie if path was empty, and you just passed ./, or had an extra space like in your example, you should see

sh: ./: Permission denied

As you describe it, it sounds like your getting a permission denied error trying to run /bin/sh; it seems more likely that you misread the error.