installfonts.ps1

# Source for this script: https://www.mondaiji.com/blog/other/it/10247-windows-install-fonts-via-command-line

# create temp directory
$tempPath = "C:\InstallFont"

# Obtain system font folder for extraction
$fonts = 0x14
$shell = New-Object -ComObject Shell.Application
$SystemFontsFolder = $shell.Namespace($fonts)


$FontFiles = Get-ChildItem -Path tempPath -Recurse -File -Include '*.ttf', '*.otf'
$SystemFontsPath = $SystemFontsFolder.Self.Path

foreach ($FontFile in $FontFiles) {
    # $FontFile will be copied to this path:
    $targetPath = Join-Path $SystemFontsPath $FontFile.Name
    # So, see if target exists...
    if (Test-Path $targetPath) {
        # font file with the same name already there.
        # delete and replace.
        Remove-Item $targetPath -Force
        Copy-Item $FontFile.FullName $targetPath -Force
    }
    else {
        #install the font.
        $SystemFontsFolder.CopyHere($FontFile.fullname)
    }
}