设置系统环境变量立即生效的VBS脚本


修改环境变量并立即生效的VBS代码。
http://www.cnblogs.com/shanyou/archive/2008/12/05/1348649.html

Set pSysEnv = CreateObject("WScript.Shell").Environment("System")

'Check whether a character string matches a regular expression
'   ^\w+[@]\w+[.]\w+$       E-MailAddress
'   ^[0-9-]+$               Numeral
Function IsMatch(Str, Patrn)
  Set r = new RegExp
  r.Pattern = Patrn
  IsMatch = r.test(Str)
End Function

Sub SetEnv(pPath, pValue)
    Dim ExistValueOfPath
    IF pValue <> "" Then
     ExistValueOfPath = pSysEnv(pPath)
 IF Right(pValue, 1) = "\" Then pValue = Left(pValue, Len(pValue)-1)
 If IsMatch(ExistValueOfPath, "\*?" & Replace(pValue, "\", "\\") & "\\?(\b|;)") Then Exit Sub '已经存在该环境变量设置
 If ExistValueOfPath <> "" Then pValue = ";" & pValue
 pSysEnv(pPath) = ExistValueOfPath & pValue 
    Else
 pSysEnv.Remove(pPath)
    End IF
End Sub

'--------设置TOF目录---------
TOF = "D:\Workshop\tof\TOF_Common\Library\Tencent.OA.Framework.dll.config"

SetEnv "TOF", TOF

MsgBox "Set environment variable for TOF successfully."

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