Windows 7不生成txt报告

Question

I want to generate a txt file with my dns history. Although the batch script executes just fine on windows 8, when i run it on windows 7 it simply creates a blank txt file. Does anyone knows why this is happening?

Here's the batch script

@echo off

    setlocal enableextensions

    set "baseName=dnshistory"

    set "count=0"
    for /f "delims=%baseName%." %%a in (
        'dir /b /o-d "%baseName%*.txt" 2^>nul'
    ) do ( set /a "count=%%a+1" & goto saveData )

:saveData
    ipconfig /displaydns | find "Record Name" > "%baseName%%count%.txt"

Answer 1

Is you Windows 7 version in English too ?

Open a CMD windows and test just the command :

ipconfig /displaydns | find /i "Record Name"

and look if something is displayed.

If not, try just the command :

ipconfig /displaydns

and look the language used Then correct your code with the correct words.

IE in Portuguese it will be :

ipconfig /displaydns | find /i "Nome do Registro"

Answer 2

try this for a language independent solution:

:saveData
(for /f "tokens=2 delims=:" %%a in ('ipconfig /displaydns') do (
  echo %%a| find "." |findstr /v /r "[0-9]$"
))>file.txt

(take every line, filter those, that have a . after a : (second token) and filter out all lines that end with a number)

EDIT another approach (because the above gives some unwanted lines):

find the first line after every ----------------- line:

@echo off
setlocal enabledelayedexpansion
ipconfig /displaydns |findstr /n "^" >a.txt
for /f "tokens=1 delims=:" %%a in ('findstr /c:"    --------------" a.txt') do (
  set /a line=%%a+1
  for /f "tokens=1,2,* delims=:" %%i in ('findstr /B "!line!:" a.txt') do echo(%%k 
)