'向指定的文件写字符串，第三个参数指定是否删除原来的内容
Function Z_WriteFile(sFileName, sText, bAppend)
Dim fs, fso, iomode
if bAppend = True Then
iomode = 8 'ForAppending
else
iomode = 2 'ForWriting
end if
set fs = CreateObject("Scripting.FileSystemObject")
set fso = fs.OpenTextFile(sFileName, iomode, True) '第三个参数表明文件不存在，则新建文件
fso.WriteLine sText
fso.Close
set fso = Nothing
set fs = Nothing
End Function
Dim path, sFileName, sText
path = "E:\Program\VBScript"
sFileName = path & "\1.txt"
sText = "what can I do for you"
Z_WriteFile sFileName, sText, True
Z_WriteFile中的第三个参数指定向文件末尾添加内容还是清除原来的内容再插入内容。