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75 lines
2.0 KiB
Plaintext
75 lines
2.0 KiB
Plaintext
NAME
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putenv - set the value of an environment variable
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SYNOPSIS
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putenv(env [,val])
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TYPES
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env str
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val str
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return int
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DESCRIPTION
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This function will set or change the value of an environment variable.
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Zero is returned if the environment variable was successfully set,
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otherwise a non-zero result is returned.
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When called with 1 arg, env must be a string of the form:
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"envname=envval"
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This sets the environment variable "envname" to the value "envval".
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The 2 arg form is equivalent to:
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putenv(strcat(env, "=", val))
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EXAMPLE
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; putenv("name", "value")
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0
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; getenv("name")
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"value"
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; putenv("name=val2")
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0
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; getenv("name")
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"val2"
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; isnull(getenv("unknown"))
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1
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LIMITS
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With 1 arg, env must contain at least 1 '=' character.
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LINK LIBRARY
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none
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SEE ALSO
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getenv
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## Copyright (C) 1999 Landon Curt Noll
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##
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## Calc is open software; you can redistribute it and/or modify it under
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## the terms of the version 2.1 of the GNU Lesser General Public License
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## as published by the Free Software Foundation.
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##
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## Calc is distributed in the hope that it will be useful, but WITHOUT
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## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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## Public License for more details.
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##
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## A copy of version 2.1 of the GNU Lesser General Public License is
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## distributed with calc under the filename COPYING-LGPL. You should have
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## received a copy with calc; if not, write to Free Software Foundation, Inc.
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## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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##
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## @(#) $Revision: 30.1 $
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## @(#) $Id: putenv,v 30.1 2007/03/16 11:10:42 chongo Exp $
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## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/putenv,v $
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##
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## Under source code control: 1995/07/09 03:48:57
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## File existed as early as: 1995
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##
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## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
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## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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