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#

#   Dos9 Manual pages, The Dos9 project

#   Copyright (C) 2012-2013  Romain Garbi (DarkBatcher)

#

#   This program is free software: you can redistribute it and/or modify

#   it under the terms of the GNU General Public License as published by

#   the Free Software Foundation, either version 3 of the License, or

#   (at your option) any later version.

#

#   This program 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 General Public License for more details.

#

#   You should have received a copy of the GNU General Public License

#   along with this program.  If not, see <http://www.gnu.org/licenses/>.

#



{{SET command}}



	The {SET} command can display, set, or remove environment variables that

	can be later retrieved through {spec/exp|variable expansion}.



{{Synopsis - Simple set}}



	${SET variable[=[content]]}



	Assign {content} to variable {variable}. If {content} is not specified, the

	the variable {variable} is removed from the environment.

	

	If neither the equal sign nor {content} are specified, {SET} will list

	variables which name begin with {variable} and their content.

	

	The way {SET} deals with quotes and spaces is a bit special and inherited

	from cmd's {SET} behaviour:

	

		- if {variable} is followed by trailing spaces before the equal sign,

		theses spaces will be removed;

		

		- However if spaces or blanks follow the equal sign, they will be

		kept.

		

		- Quotation marks on the right-hand-side of the assignment will not be

		affected unless there is also a quotation mark preceding {variable}, in

		which case, {content} will be trimmed at the last occurrence of a

		quotation mark.

	 

{{Synopsis - Arithmetic evaluation}}



	${SET /a[[:][i|f]] variable=expression}



	Computes the value of the arithmetical expression {expression} and assign its

	value to variable {variable}. This command behaviour depends on mode set

	through  {setlocal|SETLOCAL} command (parameter {ENABLEFLOATS}).



	Options can be given in addition to {/a}. These options are:



		- {i} : Force use of {integer} mode, regardless of mode set through

		{setlocal|SETLOCAL}.



		- {f} : Force use of {float} mode.



	To get extended help about {arithmetical expressions}, please see the

	following manual pages: {setai|SET (/a)(integers)} and {setaf|SET (/a)(floats)}.



	${SET /p variable=question}



	Prompt {question}, wait for an input from user and assign it to the

	variable {variable}.



{{See also}}



	{commands|Command list}, {echo|ECHO command},

	{pause|PAUSE command}, {setai|SET command (/a)(integers},

	{setaf|SET command (/a)(floats)}.