debian man page for get_executable_name

get_executable_name(3alleg4)					  Allegro manual				      get_executable_name(3alleg4)

NAME
       get_executable_name - Obtains the full path to the current executable. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       void get_executable_name(char *buf, int size);

DESCRIPTION
       Fills  `buf'  with  the full path to the current executable, writing at most `size' bytes.  This generally comes from `argv[0]' but on Unix
       systems it tries to get the information from the `/proc' filesystem first, searching the directories specified in `$PATH' if necessary.	If
       this  fails  too,  it  tries  to find the executable name from the output of the `ps' command, using `argv[0]' only as a last resort if all
       other options fail. Example:

	  char name[200];
	  ...
	  get_executable_name(name, sizeof(name));
	  allegro_message("Running `%s'
", name);

Allegro 							   version 4.4.2				      get_executable_name(3alleg4)