Пакетная замена сторок

@echo off
set "folder=C:\test"
powershell -executionpolicy bypass -command "$files=Get-ChildItem '%folder%\*.mif'; foreach ($file in $files) {$a=[System.IO.File]::ReadAllText("""$file"""); $a -replace """CoordSys NonEarth\r\nUnits `"""m`"""\r\nBounds \( \d+\.\d+, \d+\.\d+ \) \( \d+\.\d+, \d+\.\d+ \)""","""CoordSys NonEarth Units `"""m`""" Bounds ( -4000000, -4000000 ) ( 16000000, 16000000 )""" | Set-Content """$file"""}"
pause
exit

@echo off
set "folder=C:\test"
powershell -executionpolicy bypass -command "$files=Get-ChildItem '%folder%\*.mif'; foreach ($file in $files) {$a=[System.IO.File]::ReadAllText("""$file""", [Text.Encoding]::GetEncoding(65001)); $a -replace """CoordSys NonEarth\r\nUnits `"""m`"""\r\nBounds \( \d+\.\d+, \d+\.\d+ \) \( \d+\.\d+, \d+\.\d+ \)""","""CoordSys NonEarth Units `"""m`""" Bounds ( -4000000, -4000000 ) ( 16000000, 16000000 )""" | Set-Content """$file""" -Encoding UTF8}"
pause
exit

@echo off
set "folder=C:\test"
powershell -executionpolicy bypass -command "$files=Get-ChildItem '%folder%\*.mif'; foreach ($file in $files) {$a=[System.IO.File]::ReadAllText("""$file""", [Text.Encoding]::GetEncoding(1251)); $a -replace """CoordSys NonEarth\r\n\s*Units `"""m`"""\r\n\s*Bounds \( \d+\.\d+, \d+\.\d+ \) \( \d+\.\d+, \d+\.\d+ \)""","""CoordSys NonEarth Units `"""m`""" Bounds ( -4000000, -4000000 ) ( 16000000, 16000000 )""" | Set-Content """$file""" -Encoding default}"
pause
exit