.\" Copyright 2001 John Levon <moz@compsoc.man.ac.uk>
.\"
.\" 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.\" manual page may be incorrect or out-of-date.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
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.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" Additions, aeb, 2001-10-17.
.\"
.\" Japanese Version Copyright (c) 2001 Yuichi SATO
.\"         all rights reserved.
.\" Translated Sun Nov  4 22:46:03 JST 2001
.\"         by Yuichi SATO <ysato@h4.dion.ne.jp>
.\"
.TH CLEARENV 3  2001-10-17 "Linux Programmer's Manual"
.SH ̾
clearenv \- Ķѿ򥯥ꥢ
.SH 
.nf
.B #include <stdlib.h>
.sp
.BI "int clearenv(void);"
.fi
.SH 
\fBclearenv()\fP ؿϡ̾ͤȤˤʤäƤδĶѿ򥯥ꥢ롣

.SH ֤
\fBclearenv()\fP ؿϡ 0 ֤
Ԥ 0 ʳ֤

.SH 
libc4, libc5 ǤϻѤǤʤ
glibc 2.0 ʹߤ glibc ǻѤǤ롣

.SH 
(DGUX, HPUX, QNX, ʤɤ) ¿ Unix  OS
(FORTRAN77 ؤΥХǥ󥰤Ǥ) POSIX.9
POSIX.1-1996 Ǥ \fBclearenv()\fP  \fIputenv()\fP ϺѤʤä
ˤѹ졢ɸ൬ʤΰʹߤι (B.4.6.1 򻲾) Ǥ
Ѥ뤳Ȥˤʤä
 SUSv3 Ǥ \fIputenv()\fP ɲä줺
\fBclearenv()\fP ɲäݷ褵줿

.SH 
δؿϥƥ˹θץꥱǻȤ롣
δؿѤǤʤϡ
.RS
.nf
	environ = NULL;
.fi
.RE
Ȥ褦ѿ environ ꤹФ褤
.SH Ϣ
.BR getenv (3),
.BR putenv (3),
.BR setenv (3),
.BR unsetenv (3),
.BR environ (5)