NAME
putenv - change or add an environment variable
SYNOPSIS
#include <stdlib.h>
int putenv(const char *string));
DESCRIPTION
The putenv() function adds or changes the value of environ-
ment variables. The argument string is of the form
name=value. If name does not already exist in the environ-
ment, then string is added to the environment. If name does
exist, then the value of name in the environment is changed
to value.
RETURN VALUE
The putenv() function returns zero on success, or -1 if an
error occurs.
ERRORS
ENOMEM
Insufficient space to allocate new environment.
CONFORMING TO
SVID 3, POSIX, BSD 4.3
SEE ALSO
getenv(3), setenv(3), unsetenv(3), environ(5)