prunehistory - Remove tokens from Usenet history file
prunehistory [-p] [-f filename]
prunehistory modifies a history(5)-format text file to
"remove" a set of tokens from it. The tokens are removed by
overwriting them with spaces, so that the size and position of any following
entries does not change. This has an effect similar to expiring the article,
in that it is still mentioned in the history database but cannot be retrieved.
prunehistory reads the standard input. The input is taken
as a set of lines. Blank lines and lines starting with a number sign
("#") are ignored. All other lines should
consist of a message-ID followed by zero or more other fields (which are
ignored). The message-ID is used as the dbz key to get an offset into
the text file. Since innd only appends to the text file,
prunehistory does not need to have any interaction with it.
- -p
- prunehistory will normally complain about lines that do not follow
the correct format. If the -p flag is used, then the program will
silently print any invalid lines on its standard output. (Blank lines and
comment lines are also passed through.)
- -f filename
- The default name of the history file is pathdb/history; to
specify a different name, use the -f flag.
Written by Rich $alz <rsalz@uunet.uu.net> for
InterNetNews. Converted to POD by Julien Elie.
history(5), innd(8), libinn_dbz(3).