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.
COMPLIANCE
getenv
is ANSI, but the rules for properly
forming names of environment variables vary from one system to another.
getenv requires a global pointer environ.
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