Installing your version of DFHTRUC into the region

The location of DFHTRUC is specified in the DFHTRUC Program Definition (PD) entry. The PathName attribute of this entry is set to DFHTRUC,which means CICS® uses the first version of the file DFHTRUC that it finds in the directories that are specified in the region's PATH. To install your own version of DFHTRUC either:

Copy your version as DFHTRUC to a directory that is specified before prodDir/bin in your region's PATH. For example, /var/cics_regions/regionname/bin. This means that CICS will find your version of DFHTRUC before the supplied version in prodDir/bin.
Alternatively, change the PD entry for DFHTRUC so that it specifies the location of your version of DFHTRUC in the PathName attribute. This PD entry is protected (Permanent=yes) so you will have to switch it to unprotected (Permanent=no) while you update it. The example below shows the PD entry for DFHTRUC being updated in both the permanent and running database of CICS region cicsopen. The existing version is deleted from the running region. Then, the new value of PathName is set along with Permanent=no. Finally the process is repeated to switch the PD entry back to Permanent=yes.
```
cicsdelete -c pd -r cicsopen -R DFHTRUC
cicsupdate -c pd -r cicsopen -B DFHTRUC PathName=/cicsbin/DFHTRUC \
Permanent=no
cicsdelete -c pd -r cicsopen -R DFHTRUC
cicsupdate -c pd -r cicsopen -B DFHTRUC Permanent=yes
```

When the PD entry points to the location of your version of DFHTRUC, either:

Restart your region or
Use CEMT SET PROGRAM(DFHTRUC) NEW

to bring the new DFHTRUC into use.