How does a program get its path name?

[Andrew Scherpbier]

In article <11923 at brl-adm.ARPA> Leisner.Henr at xerox.com (marty) writes:
>How does an exec program get the pathname it was execed from if it wants to find
>out this information?
>
>(I'm specifically asking how cc knows to looks at ../lib for the compiler
>passes).
>
>marty

When a program executes, the full path to the executable file is kept in
the zero-th argument.  If you have a declaration of main which looks like this:
	main(argc,argv)
	int	argc;
	char	*argv[];

then argv[0] is a pointer to the full path.
Is this what you were looking for?

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