Github Hosts Update Script For Windows

hosts.ps1

$hostsFilePath = "C:\Windows\System32\drivers\etc\hosts"
$tempFilePath = "C:\hosts.txt"
$url = "https://raw.hellogithub.com/hosts"
$startLine = "# GitHub520 Host Start"
$endLine = "# GitHub520 Host End"

# Check if the line exists in the hosts file
$lineExists = Select-String -Path $hostsFilePath -Pattern $startLine -Quiet

# If the line exists, remove the old segment
if ($lineExists) {
    $content = Get-Content $hostsFilePath
    $startLineIndex = $content.IndexOf($startLine)
    $endLineIndex = $content.IndexOf($endLine)

    if ($startLineIndex -ne -1 -and $endLineIndex -ne -1) {
        if ($startLineIndex -ne 0) {
            $dns = $content[0..($startLineIndex - 1)]
        }
        if ($endLineIndex + 1 -ne $content.Length) {
          $dns = $dns + $content[($endLineIndex + 1)..($content.Length - 1)]
        }
        $dns | Out-File $hostsFilePath -Encoding UTF8
    }
}

# Download the hosts file from the specified URL and append it to the local hosts file
Invoke-WebRequest -Uri $url -OutFile $tempFilePath
Add-Content -Path $hostsFilePath -Value (Get-Content -Path $tempFilePath)

# Remove the temporary file
Remove-Item -Path $tempFilePath

# Flush the DNS cache
cmd /c ipconfig /flushdns

need admin permission