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11.7.9.1 Active File Format

The active file lists all groups available on the server in question. It also lists the highest and lowest current article numbers in each group.

Here's an excerpt from a typical active file:

     soc.motss 296030 293865 y
     alt.binaries.pictures.fractals 3922 3913 n
     comp.sources.unix 1605 1593 m
     comp.binaries.ibm.pc 5097 5089 y
     no.general 1000 900 y

Here's a pseudo-BNF definition of this file:

     active      = *group-line
     group-line  = group spc high-number spc low-number spc flag <NEWLINE>
     group       = <non-white-space string>
     spc         = " "
     high-number = <non-negative integer>
     low-number  = <positive integer>
     flag        = "y" / "n" / "m" / "j" / "x" / "=" group

For a full description of this file, see the manual pages for ‘innd’, in particular ‘active(5)’.