Install 7Zip in windows from powershell

Install-7Zip.ps1

#Inspired from https://github.com/ferventcoder/vagrant-windows-puppet/blob/master/boxes/shared/shell/InstallPuppetFromMSI.ps1

$7ZipUrl = "https://www.7-zip.org/a/7z1806.msi"
$7ZipInstallerPath = 'c:\vagrant\bin'
$7ZipInstallerFile = '7z1806.msi'
$7ZipInstaller = Join-Path $7ZipInstallerPath $7ZipInstallerFile


if ([System.IntPtr]::Size -eq 8) {
  Write-Host "Going to 7Zip 64-bit."
  $7ZipUrl = "https://www.7-zip.org/a/7z1806-x64.msi"
  $7ZipInstallerFile = '7z1806-x64.msi'
}

$7ZipInstalled = $false
try {
  $ErrorActionPreference = "Stop";
  Get-Command 7z | Out-Null
  $7ZipInstalled = $true
  $7ZipVersion=&7z "--version"
  Write-Host "7Zip $7ZipVersion is installed. This process does not ensure the exact version or at least version specified, but only that 7Zip is installed. Exiting..."
  # Exit 0
} catch {
  Write-Host "7Zip is not installed, continuing..."
}

if (!($7ZipInstalled)) {
  $currentPrincipal = New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())
  if (! ($currentPrincipal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator))) {
    Write-Host -ForegroundColor Red "You must run this script as an administrator."
    Exit 1
  }

  if (!(Test-Path $7ZipInstallerPath)) {
    Write-Host "Creating folder `'$7ZipInstallerPath`'"
    $null = New-Item -Path "$7ZipInstallerPath" -ItemType Directory
  }

  if (!(Test-Path $7ZipInstaller)) {
    Write-Host "Downloading `'$7ZipUrl`' to `'$7ZipInstaller`'"
    (New-Object Net.WebClient).DownloadFile("$7ZipUrl","$7ZipInstaller")
  }


  # Install it - msiexec will download from the url
  $install_args = @("/qn", "/norestart","/i", "$7ZipInstaller")
  Write-Host "Installing 7Zip. Running msiexec.exe $install_args"
  $process = Start-Process -FilePath msiexec.exe -ArgumentList $install_args -Wait -PassThru
  if ($process.ExitCode -ne 0) {
    Write-Host "Installer failed."
    Exit 1
  }

  Write-Host "7Zip successfully installed."
}