Verifying and extracting the installation zip file

Verify the integrity of the installation zip file and extract it.

Use the preinstalled sha256sum tool to verify that the checksum for the zip file matches with the checksum that is provided in the Release Notes.

Go to the Release Notes for the release or fix pack that you are installing. Get the checksum value.
Log in as root on the console.
Run the sha256sum checksum tool:
```
sha256sum SaferPayments_6_5_x_x.zip
```
Verify that the tool's output is the same as the checksum that is given in the Release Notes.
Extract the zip file to a temporary directory:
```
unzip SaferPayments_6_5_x_x.zip
```

The following files are extracted from the zip file:

SaferPayments.bin: The installation image file.
ibm_jre_8.0.2.10_linux_x64.vm: The setup file to install LINUX IBM® JRE 1.8 SR2 FP10 (64-bit). You need this file only if JVM is not installed.; For more information, see Preparing the Java Runtime Environment.
installer.properties: The sample response file. You need this file only if you want to run the installer in silent mode.