GETENV(3) NEWLIB GETENV(3)NAME
2.18 `getenv'--look up environment variable
SYNOPSIS
#include <stdlib.h>
char *getenv(const char *NAME);
DESCRIPTION
`getenv' searches the list of environment variable names and values
(using the global pointer "`char **environ'") for a variable whose name
matches the string at NAME. If a variable name matches, `getenv'
returns a pointer to the associated value.
RETURNS
A pointer to the (string) value of the environment variable, or `NULL'
if there is no such environment variable.
PORTABILITY
`getenv' is ANSI, but the rules for properly forming names of environ‐
ment variables vary from one system to another.
`getenv' requires a global pointer `environ'.
SEE ALSOgetenv is part of the library. The full documentation for is main‐
tained as a Texinfo manual. If info and are properly installed at your
site, the command
info
will give you access to the complete manual.
NEWLIB April 2010 GETENV(3)
