Applying dynamic software updates can be accomplished by invoking the tool hcuapply supplied with a dynamic software update patch, as prepared in Chapter 5. An example of applying a dynamic software update to vsFTPd from version 2.0.4 to version 2.0.5 is shown in Figure 6-1.
Figure 6-1. Applying a dynamic software update for vsFTPd from 2.0.4 to 2.0.5
bash$ hcuapply --file=libvsftpd_v204_to_205.so \
--update-version=205
An alternative method of applying dynamic software patches is using the API call HCU_STATIC_REQUEST_UPDATE(), as described in Section 4.3.