CraigChamberlain/github_redirects.ps1

## github_redirects.ps1
$newDomain = "yourdomain.com"
$outputDir = "_redirects"

function redirectPage($uri) {@"
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Redirecting to https://$newDomain$uri</title>
    <meta http-equiv="refresh" content="0; URL=https://$newDomain$uri">
  </head>

  <link rel="canonical" href="https://$newDomain$uri">
</html>
"@}

$pages =
    Get-ChildItem ./_site -Recurse -File |
    ? {$_.Extension -eq ".html"} |
    % { $_.FullName -replace '.*_site', ""

    }

$dirs =
    Get-ChildItem ./_site -Recurse -Directory |
    % { $_.FullName -replace '.*_site', "" }

function Get-Uri ($filename) {
     $filename  -replace "\\","/" `
                -replace "\/index.html","" `
                -replace ".html",""
}

foreach($dir in $dirs){
    mkdir "$outputDir/$dir"

}

foreach($page in $pages){
    $uri = Get-Uri $page
    redirectPage($uri) | Out-File $outputDir$page

}
	$newDomain = "yourdomain.com"
	$outputDir = "_redirects"

	function redirectPage($uri) {@"
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>Redirecting to https://$newDomain$uri</title>
	<meta http-equiv="refresh" content="0; URL=https://$newDomain$uri">
	</head>

	<link rel="canonical" href="https://$newDomain$uri">
	</html>
	"@}

	$pages =
	Get-ChildItem ./_site -Recurse -File \|
	? {$_.Extension -eq ".html"} \|
	% { $_.FullName -replace '.*_site', ""

	}

	$dirs =
	Get-ChildItem ./_site -Recurse -Directory \|
	% { $_.FullName -replace '.*_site', "" }

	function Get-Uri ($filename) {
	$filename -replace "\\","/" `
	-replace "\/index.html","" `
	-replace ".html",""
	}

	foreach($dir in $dirs){
	mkdir "$outputDir/$dir"

	}

	foreach($page in $pages){
	$uri = Get-Uri $page
	redirectPage($uri) \| Out-File $outputDir$page

	}