.\" -*- coding: UTF-8 -*- .\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) .\" and Copyright (C) 2004, 2007 Michael Kerrisk .\" .\" %%%LICENSE_START(VERBATIM) .\" Permission is granted to make and distribute verbatim copies of this .\" manual provided the copyright notice and this permission notice are .\" preserved on all copies. .\" .\" Permission is granted to copy and distribute modified versions of this .\" manual under the conditions for verbatim copying, provided that the .\" entire resulting derived work is distributed under the terms of a .\" permission notice identical to this one. .\" .\" Since the Linux kernel and libraries are constantly changing, this .\" manual page may be incorrect or out-of-date. The author(s) assume no .\" responsibility for errors or omissions, or for damages resulting from .\" the use of the information contained herein. The author(s) may not .\" have taken the same level of care in the production of this manual, .\" which is licensed free of charge, as they might when working .\" professionally. .\" .\" Formatted or processed versions of this manual, if unaccompanied by .\" the source, must acknowledge the copyright and authors of this work. .\" %%%LICENSE_END .\" .\" References consulted: .\" Linux libc source code .\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) .\" 386BSD man pages .\" Modified Sat Jul 24 18:20:58 1993 by Rik Faith (faith@cs.unc.edu) .\" Modified Fri Feb 14 21:47:50 1997 by Andries Brouwer (aeb@cwi.nl) .\" Modified 9 Jun 2004, Michael Kerrisk .\" Changed unsetenv() prototype; added EINVAL error .\" Noted nonstandard behavior of setenv() if name contains '=' .\" 2005-08-12, mtk, glibc 2.3.4 fixed the "name contains '='" bug .\" .\"******************************************************************* .\" .\" This file was generated with po4a. Translate the source file. .\" .\"******************************************************************* .TH SETENV 3 "15 Septiembre 2017" GNU "Manual del Programador de Linux" .SH NOMBRE setenv \- cambia o añade una variable de entorno .SH SINOPSIS .nf \fB#include \fP .PP \fBint setenv(const char *\fP\fInombre\fP\fB, const char *\fP\fIvalor\fP\fB, int \fP\fIsobrescribir\fP\fB);\fP .PP \fBint unsetenv(const char *\fP\fInombre\fP\fB);\fP .fi .PP .RS -4 Requisitos de Macros de Prueba de Características para glibc (véase \fBfeature_test_macros\fP(7)): .RE .PP .ad l \fBsetenv\fP(), \fBunsetenv\fP(): .RS 4 _POSIX_C_SOURCE\ >=\ 200112L || /* Versiones de glibc <= 2.19: */ _BSD_SOURCE .RE .ad b .SH DESCRIPCIÓN The \fBsetenv\fP() function adds the variable \fIname\fP to the environment with the value \fIvalue\fP, if \fIname\fP does not already exist. If \fIname\fP does exist in the environment, then its value is changed to \fIvalue\fP if \fIoverwrite\fP is nonzero; if \fIoverwrite\fP is zero, then the value of \fIname\fP is not changed (and \fBsetenv\fP() returns a success status). This function makes copies of the strings pointed to by \fIname\fP and \fIvalue\fP (by contrast with \fBputenv\fP(3)). .PP The \fBunsetenv\fP() function deletes the variable \fIname\fP from the environment. If \fIname\fP does not exist in the environment, then the function succeeds, and the environment is unchanged. .SH "VALOR DEVUELTO" \fBsetenv\fP() and \fBunsetenv\fP() functions return zero on success, or \-1 on error, with \fIerrno\fP set to indicate the cause of the error. .SH ERRORES .TP \fBEINVAL\fP \fIname\fP is NULL, points to a string of length 0, or contains an \(aq=\(aq character. .TP \fBENOMEM\fP No hay disponible suficiente memoria para añadir una nueva variable de entorno. .SH ATRIBUTOS Para obtener una explicación de los términos usados en esta sección, véase \fBattributes\fP(7). .ad l .TS allbox; lb lb lb l l l. Interfaz Atributo Valor T{ \fBsetenv\fP(), \fBunsetenv\fP() T} Seguridad del hilo MT\-Unsafe const:env .TE .ad .SH "CONFORME A" POSIX.1\-2001, POSIX.1\-2008, 4.3BSD. .SH NOTAS POSIX.1 does not require \fBsetenv\fP() or \fBunsetenv\fP() to be reentrant. .PP Prior to glibc 2.2.2, \fBunsetenv\fP() was prototyped as returning \fIvoid\fP; more recent glibc versions follow the POSIX.1\-compliant prototype shown in the SYNOPSIS. .SH ERRORES POSIX.1 specifies that if \fIname\fP contains an \(aq=\(aq character, then \fBsetenv\fP() should fail with the error \fBEINVAL\fP; however, versions of glibc before 2.3.4 allowed an \(aq=\(aq sign in \fIname\fP. .SH "VÉASE TAMBIÉN" \fBclearenv\fP(3), \fBgetenv\fP(3), \fBputenv\fP(3), \fBenviron\fP(7) .SH COLOFÓN Esta página es parte de la versión 5.10 del proyecto Linux \fIman\-pages\fP. Puede encontrar una descripción del proyecto, información sobre cómo informar errores y la última versión de esta página en \%https://www.kernel.org/doc/man\-pages/. .PP .SH TRADUCCIÓN La traducción al español de esta página del manual fue creada por Gerardo Aburruzaga García y Marcos Fouces . .PP Esta traducción es documentación libre; lea la .UR https://www.gnu.org/licenses/gpl-3.0.html GNU General Public License Version 3 .UE o posterior con respecto a las condiciones de copyright. No existe NINGUNA RESPONSABILIDAD. .PP Si encuentra algún error en la traducción de esta página del manual, envíe un correo electrónico a .MT debian-l10n-spanish@lists.debian.org .ME .