NAME

getenv, putenv − access environment variables

SYNOPSIS

­#include <u.h>
­#include <libc.h>

char∗ getenv(char ∗name)
int   putenv(char ∗name, char ∗val)

DESCRIPTION

­Getenv reads the contents of /env/name (see env(3)) into memory allocated with malloc(2), 0-terminates it, and returns a pointer to that area. If no file exists, 0 is returned.

­Putenv creates the file /env/name and writes the string ­val to it.  The terminating ­0 is not written.  If the file value cannot be written, −1 is returned. 

SOURCE

­/sys/src/libc/9sys

SEE ALSO

env(3)

DIAGNOSTICS

Sets errstr.

Plan 9  —  December 11, 1999