AAAA0001.csv AAAA0002.csv AAAA0003.csvをBBBB0001.csv BBBB0002.csv BBBB0003.csvにしたい場合 ls "AAAA*.csv" | ren -newName { [Text.RegularExpressions.Regex]::Replace($_.Name, "AAAA(.*)`.csv", "BBBB`$1.csv") }解説 ls (Get-ChildItem) で、名前…