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in reply to Re^4: Prepocessing perl code / substing variables
in thread Prepocessing perl code / substing variables

Probably any of the template modules could handle it.

However, I also think you would be better off using a configuration file. Even using a template to generate the configuration file would be better than messing with the Perl source code. Each container would get a configuration file suited to it's needs.

Also, by using configuration files, it is far easier to make changes. Without configuration files, the package would have to be uninstalled then re-installed.