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NAME
putenv - set the value of an environment variable
SYNOPSIS
putenv(env [,val])
TYPES
env str
val str
return int
DESCRIPTION
This function will set or change the value of an environment variable.
Zero is returned if the environment variable was successfully set,
otherwise a non-zero result is returned.
When called with 1 arg, env must be a string of the form:
"envname=envval"
This sets the environment variable "envname" to the value "envval".
The 2 arg form is equivalent to:
putenv(strcat(env, "=", val))
EXAMPLE
; putenv("name", "value")
0
; getenv("name")
"value"
; putenv("name=val2")
0
; getenv("name")
"val2"
; isnull(getenv("unknown"))
1
LIMITS
With 1 arg, env must contain at least 1 '=' character.
LINK LIBRARY
none
SEE ALSO
getenv
## Copyright (C) 1999,2021 Landon Curt Noll
##
## Calc is open software; you can redistribute it and/or modify it under
## the terms of the version 2.1 of the GNU Lesser General Public License
## as published by the Free Software Foundation.
##
## Calc is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
## Public License for more details.
##
## A copy of version 2.1 of the GNU Lesser General Public License is
## distributed with calc under the filename COPYING-LGPL. You should have
## received a copy with calc; if not, write to Free Software Foundation, Inc.
## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
##
## Under source code control: 1995/07/09 03:48:57
## File existed as early as: 1995
##
## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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