copy file and delete file by vbscript or bat file

Hi ,
I want a script to do
copy file a.bkf from folder a to folder b and rename file a to a_yyyymmdd.bkf
detect the files in folder b and delete the file that old than 30days.

Please write it as a vbscript or dos bat file . so it is easy to modify.
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Rob HutchinsonDesktop SupportCommented:
This is part of a vbs subroutine that I wrote 10 years ago and I can't even remember where I got the info from, etc.

Don't ask me to explain it as I'm not a scripting expert, but thought I'd post it anyway to give you some ideas so you can write your own script.

It does not do the detecting part of it.

I included the exe, but renamed it as RF.txt.

if there is a file in the same folder called "access_file" then it renames it to
"1023-PM-07-13-09-access_file" or whatever the current date and time are.

Attribute VB_Name = "FileScan"
Public Sub Main()
Dim OldName, Today, filenamedatentime
Today = Now ' Assign current system date and time.
Today = Format(Today, "hmm-AM/PM-mm-dd-yy")
'Rename the access_file name to today's date
OldName = "access_file"
filenamedatentime = CStr(Today + "-" + OldName)
Name OldName As filenamedatentime ' Move and rename file.
End Sub
Public Sub errorfile()
Dim OldName, Today, filenamedatentime
Today = Now ' Assign current system date and time.
Today = Format(Today, "hmm-AM/PM-mm-dd-yy")
On Error Resume Next
'Rename the error_file name to today's date
OldName = "error_file"
filenamedatentime = CStr(Today + "-" + OldName)
Name OldName As filenamedatentime ' Move and rename file.
End Sub

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I've got a couple of scripts I can mash together that will do what you need.  
Can you tell me, is it always the same source file?  ie always a.bkf or do you need it to cope with multiple source files?
OK, try this for size.
Hopefully it's clear what is happening but...
The constants up the top are the only bits you should need to change.
An exception to this is the format of the date, if you have US style dates then you need to use the US format line instead of the UK line.
Let me know how you get on.

Option Explicit
Const sSourceFolder = "C:\A"
Const sDestinationFolder = "C:\B"
Const cFileNameWithoutExtension = "a"
Const cFileNameExtensionOnly = ".bkf"
Const cKeepDays = 30
Dim oShell, oFSO, i
Dim oFolderInfo, oFileCol, oFile
Dim sLogFile, sFileName
sFileName = cFileNameWithoutExtension&cFileNameExtensionOnly
Set oShell = CreateObject("WScript.Shell")
Set oFSO = CreateObject("Scripting.FileSystemObject")
Dim sNewFileName
sNewFileName = cFileNameWithoutExtension&"_"&Year(Now)&Right("0"&Month(Now),2)&Right("0"&Day(Now),2)&cFileNameExtensionOnly
oFSO.CopyFile sSourceFolder&"\"&sFileName, sDestinationFolder&"\"&sNewFileName
Sub clearLogs
	Dim iStartOfDate, sCurrentFilename, fileYear, fileMonth, fileDay, fileDate, diff
	Set oFolderInfo = oFSO.GetFolder(sDestinationFolder)
	Set oFileCol = oFolderInfo.Files
	For Each oFile In oFileCol 'Loop through each file within the current sub folder
		sCurrentFilename = LCase(
		If InStr(sCurrentFilename, cFileNameWithoutExtension&"_") = 1 AND InStr(sCurrentFilename, cFileNameExtensionOnly) >0 Then  'if not a log file, skip
			iStartOfDate = InStr(sCurrentFilename, "_")+1
			fileYear =  Mid(sCurrentFilename,iStartOfDate,4)
			fileMonth = Mid(sCurrentFilename,iStartOfDate+4,2)
			fileDay =   Mid(sCurrentFilename,iStartOfDate+6,2)
			fileDate = CDate(fileDay&"/"&fileMonth&"/"&fileYear)  'UK format
			'fileDate = CDate(fileMonth&"/"&fileDay&"/"&fileYear)  'US format	
			diff = DateDiff("d",fileDate,Now)
			If diff => cKeepDays Then
				oFSO.DeleteFile sDestinationFolder&"\"&sCurrentFilename
			End If	
		End If 
End Sub

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GordonLiqAuthor Commented:
That works really well , thanks for help!!!!
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