PowerShell: Convert Linux/Windows Line Ending

By Xah Lee. Date: . Last updated: .

Here's functions to report or convert newline convention.

put this in your PowerShell Profile

function xah-newline-report {
    # .DESCRIPTION
    # xah-newline-report accept a piped file object. It print one of
    # - Windows CRLF ‹filename›
    # - MacOS9 CR ‹filename›
    # - unix LF ‹filename›
    # - No CR nor LF ‹filename›
    # Version 2021-12-16 2022-01-15
    # .EXAMPLE
    # dir -Recurse -file -Include "*html" | xah-newline-report
    # .LINK
    # http://xahlee.info/powershell/powershell_fix_newline.html
    Process {
        $content = [IO.File]::ReadAllText($_)
        if ($content.contains("`r`n")) { "Windows CRLF $_" }
        elseif ($content.contains("`r")) { "MacOS9 CR $_" }
        elseif ($content.contains("`n")) { "unix LF $_" }
        else { "No CR nor LF $_" }
    }
}
function xah-newline-to-unix {
    # .DESCRIPTION
    # xah-newline-to-unix accept a piped file object, it convert line ending to unix convention.
    # .EXAMPLE
    # dir -Recurse -file -Include "*html" | xah-newline-to-unix
    # version 2021-12-16 2022-01-15
    # .LINK
    # http://xahlee.info/powershell/powershell_fix_newline.html
    Process {
        $content = [IO.File]::ReadAllText($_)
        if ($content.contains("`r`n")) {
            Copy-Item $_ ($_.fullname + (Get-Date -Format "~yyyyMMddHHmm~"))
            $newContent = ($content -replace "`r`n", "`n")
            [IO.File]::WriteAllText($_, $newContent)
        }
        elseif ($content.contains("`r")) {
            Copy-Item $_ ($_.fullname + (Get-Date -Format "~yyyyMMddHHmm~"))
            $newContent = ($content -replace "`r", "`n")
            [IO.File]::WriteAllText($_, $newContent)
        }
    }
}

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