Saving Vars
Posted: 24 Mar 2014 14:32
How would I save a variable so that it can be accessed if the program has been closed?
Code: Select all
@Echo off&SetLocal
Set "NewVar=Compo"
Set "KEY=HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment"
Reg Add "%KEY%" /V NewVar /D "%NewVar%" /F 1>Nulgaventemples31415 wrote:SO, I would just change Key to the variable's name?
@Echo off&SetLocal
Set "CDROM=E:"
Set "KEY=HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment"
Reg Add "%KEY%" /V CDROM /D "%CDROM%" /F 1>Nul
gaventemples31415 wrote:How would I save a variable so that it can be accessed if the program has been closed?
Code: Select all
@if (@CodeSection == @Batch) @then
:: SetEnv.bat: Creation of persistent environment variables via a JScript subroutine
:: Antonio Perez Ayala
@echo off
setlocal EnableDelayedExpansion
if "%~1" neq "" if "%~1" neq "/?" goto begin
set start=
for /F "delims=:" %%a in ('findstr /N "^</*usage>" "%~F0"') do (
if not defined start (set start=%%a) else set /A lines=%%a-start-1
)
set line=0
for /F "skip=%start% tokens=1* delims=:" %%a in ('findstr /N "^" "%~F0"') do (
echo(%%b
set /A line+=1
if !line! equ %lines% goto :EOF
)
<usage>
Create persistent environment variables.
SETENV charVar=code strVar:=string ... [/T:envtype]
charVar Specifies the name of one-character environment-variable.
code Ascii (Unicode) code of the character assigned to charVar;
any code is valid, excepting zero.
strVar Specifies the name of string environment-variable.
string String of characters assigned to strVar;
if contain spaces or special characters, enclose it in quotes.
/T Specify the environment type for the variables.
envtype SYSTEM Applies to all users of the computer and is saved
between logoffs and restarts in the registry.
USER Applies to the user currently logged on to the
computer and is saved between logoffs and restarts.
VOLATILE Applies to current logon session and is not saved
between logoffs and restarts (this is the default).
PROCESS Applies to current process and might be passed to
child processes.
Examples:
[call] SetEnv BEL=7 BS=8 TAB=9 CR=13 LF=10
[call] SetEnv LastLogoff:="%date% @ %time%" /T:USER
</usage>
:begin
rem Define the variables via JScript
Cscript /nologo /E:JScript "%~F0" %*
goto :EOF
@end
// JScript section: SetEnv subprogram
// Define environment variables given in command-line arguments with this format:
// charVar=code strVar:="string" ... [/T:SYSTEM|USER|VOLATILE|PROCESS]
// Antonio Perez Ayala
// Reference: http://technet.microsoft.com/en-us/library/ee156595.aspx
var envType = WScript.Arguments.Named.Item("T");
if ( envType == undefined ) envType = "VOLATILE";
var WshShell = WScript.CreateObject("WScript.Shell"),
colEnvVars = WshShell.Environment(envType),
args = WScript.Arguments.Unnamed, name_Value, equalSignPos;
for ( var i = 0; i < args.Length; i++ ) {
name_Value = args.Item(i);
equalSignPos = name_Value.indexOf("=");
if ( name_Value.charAt(equalSignPos-1) == ":" )
colEnvVars(name_Value.slice(0,equalSignPos-1)) = name_Value.slice(equalSignPos+1);
else {
colEnvVars(name_Value.slice(0,equalSignPos)) = String.fromCharCode(parseInt(name_Value.slice(equalSignPos+1)));
}
}