.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
.\"
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" References consulted:
.\"     Linux libc source code
.\"     Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
.\"     386BSD man pages
.\" Modified Sat Jul 24 19:30:29 1993 by Rik Faith (faith@cs.unc.edu)
.\" Modified Fri Feb 14 21:47:50 1997 by Andries Brouwer (aeb@cwi.nl)
.\" Translated into Spanish Mon Jan 26 1998 by Gerardo Aburruzaga
.\" García <gerardo.aburruzaga@uca.es>
.\"
.TH GETENV 3  "3 Abril 1993" "GNU" "Manual del Programador de Linux"
.SH NOMBRE
getenv \- obtiene una variable de ambiente
.SH SINOPSIS
.nf
.B #include <stdlib.h>
.sp
.BI "char *getenv(const char *" nombre );
.fi
.SH DESCRIPCIÓN
La función \fBgetenv()\fP busca en la lista de ambiente una cadena de
caracteres que concuerde con la apuntada por \fInombre\fP. Las cadenas
son de la forma \fInombre = valor\fP.
.SH "VALOR DEVUELTO"
La función \fBgetenv()\fP devuelve un puntero al valor correspondiente
del ambiente, o NULL si no hay concordancia.
.SH "CONFORME A"
SVID 3, POSIX, BSD 4.3, ISO 9899
.SH "VÉASE TAMBIÉN"
.BR putenv (3),
.BR setenv (3),
.BR clearenv (3),
.BR unsetenv (3),
.BR environ (7)