installed.ps1

# https://blogs.technet.microsoft.com/heyscriptingguy/2011/11/13/use-powershell-to-quickly-find-installed-software/

# Example finding location of 7-zip

$computername=(get-childitem -path env:computername).value
$UninstallKey="SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall"
$reg=[microsoft.win32.registrykey]::OpenRemoteBaseKey('LocalMachine',$computername)
$regkey=$reg.OpenSubKey($UninstallKey)
$subkeys=$regkey.GetSubKeyNames()
$array = @()
foreach($key in $subkeys){
  $thisKey=$UninstallKey+"\\"+$key
  $thisSubKey=$reg.OpenSubKey($thisKey)
  $obj = New-Object PSObject
  $obj | Add-Member -MemberType NoteProperty -Name "ComputerName" -Value $computername
  $obj | Add-Member -MemberType NoteProperty -Name "DisplayName" -Value $($thisSubKey.GetValue("DisplayName"))
  $obj | Add-Member -MemberType NoteProperty -Name "DisplayVersion" -Value $($thisSubKey.GetValue("DisplayVersion"))
  $obj | Add-Member -MemberType NoteProperty -Name "InstallLocation" -Value $($thisSubKey.GetValue("InstallLocation"))
  $obj | Add-Member -MemberType NoteProperty -Name "Publisher" -Value $($thisSubKey.GetValue("Publisher"))
  $array += $obj
}
# $array | Where-Object { $_.DisplayName } | select ComputerName, DisplayName, DisplayVersion, Publisher | ft -auto
# $array | Where-Object { $_.DisplayName -eq "7-Zip 16.02 (x64)"} | select DisplayName, InstallLocation| ft -auto
$array | Where-Object { $_.DisplayName -eq "7-Zip 16.02 (x64)"} | select InstallLocation