Dependency perl code

Introduction

The dependency perl code (DPC) manages the creation and updating of images and data. It's used for systems when the introduction or update of one file - such as yesterday's raw data from a remote site - triggers the need to create, or update, a series of other files.

Once the configuration files and the scripts and code required to create the files have been written, the files can generally all be updated with the command:

perl update_files.pl --update

To only view the commands that would be carried out by the DPC, type

perl update_files.pl --passive

which will list all the files that need updating and the commands that the DPC would carry out in active mode.

For more information on the DPC see the web pages here:

• How it works: explains how dependency perl code works, and why it's different to a makefile.
• Configuration files: the files used to run the DPC
• Command directory: the scripts responsible for creating most of the files.
• Arguments: the arguments that can be used.
• Web interface: the visual aid to the DPC.