getenv(3C)getenv(3C)NAMEgetenv() - return value for environment name
searches the environment list (see environ(5)) for a string of the form
and returns a pointer to the value in the current environment if such a
string is present or a NULL pointer if it is not. name can be either
the desired name, null-terminated, or of the form in which case uses
the portion to the left of the as the search key.
If the optional HP Getenv-Perf-Enh product is installed on the system,
the performance of in threaded applications may increase.
returns a pointer to static data which can be overwritten by subsequent
The category determines the interpretation of characters in name as
single and/or multibyte characters.
International Code Set Support
Single and multibyte character code sets are supported.
SEE ALSOexec(2), putenv(3C), environ(5), thread_safety(5).