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Windows のイベントログを元に PC の日ごとの起動終了ログを出力する(日中の再起動は無視)
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# 実行日当月のイベントログを対象にする | |
Get-EventLog -LogName System -After (Get-Date -Format "yyyy/MM/01") | Where-Object { | |
# OSの起動終了時刻をイベントログサービスの開始(6005)、停止(6006)で判定 | |
$_.EventID -eq '6005' -or $_.EventID -eq '6006' | |
} | ForEach-Object { | |
# イベントを日付でサマリーするためのカスタムオブジェクト生成 | |
[PSCustomObject]@{ | |
EventID = $_.EventID | |
EventName = if($_.EventID -eq '6005') { "up" } else { "down" } | |
DateGenerated = ($_.TimeGenerated).ToString("yyyy/MM/dd") | |
TimeGenerated = $_.TimeGenerated | |
} | |
} | Group-Object EventId, DateGenerated | ForEach-Object { | |
# 日付でグルーピングして一番早い起動と、一番遅い終了を取得(日中の再起動を無視する) | |
if($_.Group.EventID[0] -eq '6005') { | |
$_.Group | Sort-Object TimeGenerated | Select-Object -First 1 | |
} else { | |
$_.Group | Sort-Object -Descending TimeGenerated | Select-Object -First 1 | |
} | |
} | Sort-Object DateGenerated, EventId | Select-Object EventName, TimeGenerated |
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