Preinstallation tasks Before you install the product, you might need to prepare or configure your computer. Increasing the number of file handles on Linux workstationsVerifying and extracting electronic imagesAfter you download the installation files, you must extract the electronic image from the compressed file before you can install IBM® DevOps Test UI (Test UI). You may want to verify the completeness of the downloaded files before extracting the image.Parent topic: Installing the product using Installation Manager