getenv - Return the value of an environment variable
const char *name );
Standard C Library (libc)
Interfaces documented on this reference page conform to
industry standards as follows:
getenv(): XPG4, XPG4-UNIX
Refer to the standards(5) reference page for more information
about industry standards and associated tags.
Specifies the name of an environment variable.
The getenv() function searches the environment list for a
string of the form name=value, and returns a pointer to a
string containing the corresponding value for name.
The returned string should not be modified by the application,
but may be overwritten by a subsequent call to the
getenv() or putenv() functions from the same thread.
The getenv() function returns a pointer to a string containing
the value in the current environment if such a
string is present. If such a string is not present, a
null pointer is returned.
Functions: putenv(3), clearenv(3)
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