PUTENV

Section: Linux Programmer's Manual (3)
Updated: April 8, 1993
Index Return to Main Contents
 

NAME

putenv - change or add an environment variable  

SYNOPSIS

#include <stdlib.h>

int putenv(const char *string);
 

DESCRIPTION

The putenv() function adds or changes the value of environment variables. The argument string is of the form name = value. If name does not already exist in the environment, then string is added to the environment. If name does exist, then the value of name in the environment is changed to value.  

RETURN VALUE

The putenv() function returns zero on success, or -1 if an error occurs.  

ERRORS

ENOMEM
Insufficient space to allocate new environment.
 

CONFORMING TO

SVID 3, POSIX, BSD 4.3  

SEE ALSO

getenv(3), setenv(3), unsetenv(3)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
CONFORMING TO
SEE ALSO

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