index into the
file for an article having a specified Message-ID or hash key of Message-ID.
cannot be found in the database, the program prints ``Not found'' and
exits with a non-zero status.
is in the database, the program prints the token of the
article and exits successfully.
If the ``-e'' flag is used, then
will only print the filename of the token of an existing article.
To specify a different value for the history file and database, use
the ``-f'' flag.
If the ``-h'' flag is used then the hash of the Message-ID
will be printed regardless of its existense.
If the ``-i'' flag is used, then
will read a list of Message-ID's on standard input, one per line.
Leading and trailing whitespace is ignored, as are any malformed lines.
It will print on standard output those Message-ID's which are not
found in the history database.
This flag is used in processing ``ihave'' control messages.
If the ``-l'' flag is used then the entire line from the history
file will be displayed.
If no pathname exists, the program will print ``/dev/null'' and exit
This can happen when an article has been canceled, or if it has been
expired but its history is still retained.
This is default behavior, which can be obtained by using
the ``-n'' flag.
If the ``-q'' flag is used, then no message is displayed.
The program will still exit with the appropriate exit status.
If the ``-s'' flag is used, then
will read a similar list from its standard input.
It will print on standard output a list of filenames for each article
that is still available.
This flag is used in processing ``sendme'' control messages.
If the ``-t'' flag is used, then only the offset into the history text
file is printed.
Written by Rich $alz <email@example.com> for InterNetNews.
This is revision 188.8.131.52, dated 2000/08/17.