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getenv(S)


getenv -- return value for environment name

Syntax

cc . . . -lc

#include  <stdlib.h>

char *getenv (name) char *name;

Description

The getenv function searches the environment list (see environ(M)) for a string of the form name = value and returns a pointer to the value in the current environment if such a string is present. If not, it returns a NULL pointer.

See also

environ(M), exec(S), putenv(S)

Standards conformance

getenv is conformant with:

X/Open Portability Guide, Issue 3, 1989 ;
ANSI X3.159-1989 Programming Language -- C ;
Intel386 Binary Compatibility Specification, Edition 2 (iBCSe2) ;
IEEE POSIX Std 1003.1-1990 System Application Program Interface (API) [C Language] (ISO/IEC 9945-1) ;
and NIST FIPS 151-1 .


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