Go to the directory into which the installation package was unpacked and run the setup script:
> cd /tmp/ssh2-5.3.0.<build>
If you run the script in the TSO OMVS shell you may need to press the PF10 key from time to time to keep the shell in the RUNNING state.
The setup script does the following:
It copies the binaries and manual pages under /usr/lpp/ssh2 and configuration files under /etc/ssh2.
It makes the server program-controlled.
It creates a host key pair (1536-bit RSA) if none is previously available at /etc/ssh2/hostkey and /etc/ssh2/hostkey.pub. For example, if the software is upgraded from an earlier version, a new key pair is not created but the existing key pair is used. For more information on the server host key, see Section Server Authentication with Public Keys.