Users Guide

This command executes the dependency rules within the DUP, issues any warnings, exits without

applying the update to the system, and writes the results to the console. You can also use the DUP to set

an exit code to perform decisions within the scripts.

Information while applying the Updates on a Running

System

This section describes all the effects of applying the updates on a running system.

System Reboot Required

Certain packages, such as those that update the system BIOS, require a reboot for the new software to

take effect. After you apply an update that requires a reboot, you must restart the system to complete the

update.

You have the option of choosing to defer the reboot until another time as long as you do not turn off the

system. This feature is primarily intended to allow you to apply any number of updates together and

perform the system reboot after the last update has been applied. If this process is interrupted, for

example, through a power interruption, you must repeat the updates. Therefore, it is recommended that

you schedule updates for a time when the reboot can take place immediately after you apply the last

update.

Saving Console Output for Linux

As the DUPs are executed, messages are printed to the console. To redirect console output, use the

following syntax with interactive commands:

./packagename.bin|tee -a logname.lo

The |tee specifies the output from the DUP to be sent to both the console and to a log file. The ‑a switch

ensures that the output is appended to a file, protecting any previous log file output from being

overwritten.

Delivering DUPs to the Systems

The DUP application does not provide scheduling and delivery of the packages to multiple systems. You

must rely on third‑party or native operating system applications to accomplish script execution and

distribution on multiple systems.

Updating Multiple Systems

For large environments that consists of multiple systems, remote software distribution applications

provide the best solution. Many of these tools can effectively leverage the DUP and provide the

convenience of installing and updating a variety of software, such as operating systems and applications,

in a heterogeneous environment.

Network file shares also are an effective method of making DUP accessible in a distributed environment.

When a DUP begins execution, it first copies the contents of the package to a temporary location on the

local drive of the system. This process ensures that the update can be completed even if the connection

to the network share is lost for any reason.