vbs增加一行

n="AAAAAA5432543AA" 'n为要添加的内容
h=3 'h为要添加的行号
set ws=createobject("wscript.shell")
set fso=createobject("scripting.filesystemobject")
set file=fso.opentextfile("1.txt")
m=file.readall
file.close
s=split(m,vbcrlf):l=ubound(s)
for i=0 to l
if i<>h-1 then
sm=sm & s(i) &vbcrlf
else
sm=sm & n &vbcrlf&s(i) &vbcrlf
end if
next
set file=fso.opentextfile("1.txt",2)
file.write sm
file.close
ws.run "1.txt"