Plan 9 /sys/man/2/getenv

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)


	`#include <u.h> #include <libc.h>` `char* getenv(char name) int putenv(char name, char *val)`


	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.


	Sets errstr.