【bat】バッチファイルでIPアドレスを取得してログに記録する完全ガイド｜ipconfig・wmic・NIC絞り込み・変更検知・定期記録まで

@echo off
setlocal enabledelayedexpansion

set LOGFILE=C:\logs\ip_log.txt
if not exist "C:\logs" mkdir "C:\logs"

REM IPv4 行を取得（複数NICがある場合は最初の1件）
set IP=
for /f "tokens=2 delims=:" %%I in ('ipconfig ^| findstr "IPv4"') do (
    if not defined IP (
        set IP=%%I
        REM 先頭スペースを除去
        set IP=!IP:~1!
    )
)

REM タイムスタンプを整形
set T=%TIME: =0%
set TS=%DATE% %T:~0,8%

echo [%TS%] %COMPUTERNAME% IP=%IP% >> "%LOGFILE%"
echo IP取得完了: %IP%
endlocal

@echo off
setlocal enabledelayedexpansion

REM 対象アダプター名（ipconfig の出力に含まれる文字列）
set TARGET_ADAPTER=イーサネット アダプター イーサネット

set IN_SECTION=0
set ETH_IP=

for /f "tokens=* delims=" %%L in ('ipconfig') do (
    REM セクション開始行を検出
    echo %%L | findstr /i "%TARGET_ADAPTER%" >nul 2>&1
    if !errorlevel! equ 0 set IN_SECTION=1

    REM 別セクション開始でリセット（空行またはアダプター行）
    echo %%L | findstr /r "^[A-Za-z].*アダプター" >nul 2>&1
    if !errorlevel! equ 0 (
        echo %%L | findstr /i "%TARGET_ADAPTER%" >nul 2>&1
        if !errorlevel! neq 0 set IN_SECTION=0
    )

    REM 対象セクション内の IPv4 行を抽出
    if !IN_SECTION! equ 1 (
        echo %%L | findstr "IPv4" >nul 2>&1
        if !errorlevel! equ 0 (
            for /f "tokens=2 delims=:" %%I in ("%%L") do (
                set ETH_IP=%%I
                set ETH_IP=!ETH_IP:~1!
            )
        )
    )
)

if defined ETH_IP (
    echo イーサネット IP: %ETH_IP%
) else (
    echo イーサネット接続なし
)
endlocal

@echo off
setlocal

set LOGFILE=C:\logs\netinfo.txt
if not exist "C:\logs" mkdir "C:\logs"

set T=%TIME: =0%
echo ===== %DATE% %T:~0,8% %COMPUTERNAME% ===== >> "%LOGFILE%"

REM wmic で有効なNICの情報を一括取得
wmic nicconfig where "IPEnabled=True" get Description,IPAddress,MACAddress,DefaultIPGateway /format:list >> "%LOGFILE%"

echo. >> "%LOGFILE%"
echo NIC情報をログに記録しました: %LOGFILE%
endlocal

@echo off
setlocal enabledelayedexpansion

REM wmic の IPAddress 出力例: {"192.168.1.100","fe80::1234:..."}
REM IPv4 部分（最初のアドレス）のみを取り出す

set WMIC_IP=
for /f "tokens=2 delims={}" %%A in (
    'wmic nicconfig where "IPEnabled=True" get IPAddress /value ^| findstr "IPAddress="'
) do (
    REM カンマ区切りの最初の要素がIPv4
    for /f "tokens=1 delims=," %%I in ("%%A") do (
        set WMIC_IP=%%I
        REM ダブルクォートを除去
        set WMIC_IP=!WMIC_IP:"=!
    )
    goto :wmic_done
)
:wmic_done
echo wmic IP: %WMIC_IP%
endlocal

@echo off
setlocal

REM PowerShell でループバック・仮想NICを除いた最初のIPv4を取得
for /f %%I in (
    'powershell -NoProfile -Command "
    (Get-NetIPAddress -AddressFamily IPv4 |
    Where-Object { $_.IPAddress -notlike ''127.*'' -and $_.PrefixOrigin -ne ''WellKnown'' } |
    Select-Object -First 1).IPAddress"'
) do set IP=%%I

echo IPv4アドレス: %IP%
endlocal

@echo off
setlocal

set LOGFILE=C:\logs\ip_all.txt
if not exist "C:\logs" mkdir "C:\logs"

set T=%TIME: =0%
echo ===== %DATE% %T:~0,8% ===== >> "%LOGFILE%"

REM 全有効NICのアダプター名とIPv4を一覧出力
powershell -NoProfile -Command "
Get-NetIPAddress -AddressFamily IPv4 |
Where-Object { $_.IPAddress -notlike '127.*' } |
Select-Object InterfaceAlias,IPAddress |
Format-Table -AutoSize" >> "%LOGFILE%"

echo NIC一覧をログに記録しました
endlocal

@echo off
setlocal enabledelayedexpansion

set LOGFILE=C:\logs\ip_change.log
set IP_CACHE=C:\logs\ip_last.txt
if not exist "C:\logs" mkdir "C:\logs"

REM 現在のIPを取得
set CURRENT_IP=
for /f "tokens=2 delims=:" %%I in ('ipconfig ^| findstr "IPv4"') do (
    if not defined CURRENT_IP (
        set CURRENT_IP=%%I
        set CURRENT_IP=!CURRENT_IP:~1!
    )
)

REM 前回のIPをキャッシュファイルから読み込む
set PREV_IP=
if exist "%IP_CACHE%" (
    for /f %%I in (%IP_CACHE%) do set PREV_IP=%%I
)

REM 変更検知
if not "%CURRENT_IP%"=="%PREV_IP%" (
    set T=%TIME: =0%
    echo [%DATE% !T:~0,8!] 変更検知: %PREV_IP% -> %CURRENT_IP% >> "%LOGFILE%"
    echo %CURRENT_IP% > "%IP_CACHE%"
    echo [変更] %PREV_IP% -^> %CURRENT_IP%
) else (
    echo [変更なし] 現在のIP: %CURRENT_IP%
)
endlocal

@echo off
setlocal enabledelayedexpansion

REM --- 設定 ---
set LOG_DIR=C:\logs\network
if not exist "%LOG_DIR%" mkdir "%LOG_DIR%"

REM 日付付きログファイル名（ロケール非依存）
for /f "tokens=2 delims==" %%A in ('wmic os get LocalDateTime /value') do set DT=%%A
set TODAY=%DT:~0,8%
set LOGFILE=%LOG_DIR%\net_%TODAY%.log

REM タイムスタンプ
set T=%TIME: =0%
set TS=%DT:~0,4%-%DT:~4,2%-%DT:~6,2% %DT:~8,2%:%DT:~10,2%:%DT:~12,2%

echo ===== %TS% %COMPUTERNAME% ===== >> "%LOGFILE%"

REM IPアドレス（全NIC）
echo [IP] >> "%LOGFILE%"
ipconfig | findstr "IPv4" >> "%LOGFILE%"

REM MACアドレス・ゲートウェイ
echo [NIC詳細] >> "%LOGFILE%"
wmic nicconfig where "IPEnabled=True" get Description,MACAddress,DefaultIPGateway /format:list >> "%LOGFILE%"

echo. >> "%LOGFILE%"
echo 記録完了: %LOGFILE%
endlocal

@echo off

REM 1時間ごとに net_record.bat を実行するタスクを登録
schtasks /create ^^
  /tn "NetworkIPLogger" ^^
  /tr "C:\scripts\net_record.bat" ^^
  /sc hourly ^^
  /mo 1 ^^
  /ru "%USERNAME%" ^^
  /f

echo タスク登録完了
schtasks /query /tn "NetworkIPLogger" /fo LIST