Originální popis anglicky:
getenv - get an environment variable
Návod, kniha: Linux Programmer's Manual
#include <stdlib.h>
char *getenv(const char *name);
The
getenv() function searches the environment list for a string that
matches the string pointed to by
name. The strings are of the form
name = value.
The
getenv() function returns a pointer to the value in the environment,
or NULL if there is no match.
SVID 3, POSIX, BSD 4.3, ISO 9899
clearenv(3),
putenv(3),
setenv(3),
unsetenv(3),
environ(5)
