getwd - get pathname of current working directory

Syntax	#include <unistd.h> char *getwd(char *path_name);
Description	getwd() determines the absolute pathname of the current working directory of the calling process and copies it into a string pointed to by the path_name argument. If the length of the pathname of the current working directory including the null byte is greater than {PATH_MAX}+1, getwd() will fail and return a null pointer.
Return val.	Pointer to a string
		if successful. The string contains the absolute pathname of the current working directory.
	Null pointer	if an error occurs. The string pointed to by path_name contains an error text.
Notes See also	Portable applications should use the getcwd() function instead of getwd(). getcwd(), unistd.h.