getenv(3) -- Linux man page

 

NAME

getenv - get an environment variable  

SYNOPSIS

#include <stdlib.h>

char *getenv(const char *name);
 

DESCRIPTION

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.  

RETURN VALUE

The getenv() function returns a pointer to the value in the environment, or NULL if there is no match.  

CONFORMING TO

SVID 3, POSIX, BSD 4.3, ISO 9899  

SEE ALSO

putenv(3), setenv(3), clearenv(3), unsetenv(3), environ(5)