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(Query the INN history database)
grephistory [-eilnqsv] [-f db] [message-id]
grephistory queries the INN history database for information about the
specified message-ID. If no flags are given, the program prints the
storage API token of the corresponding article, or /dev/null
if the
article is listed in the history database but not stored on the server.
If the message-ID cannot be found in the database, grephistory will
print grephistory: not found
and exit with a non-zero status.
Be sure to escape any special characters in the message ID from the shell. Single quotes are recommended for this purpose since many message-IDs contain dollar signs.
Only print the storage token if the article is stored on the system. (In
other words, suppress the /dev/null
or not found
output for missing
or remembered articles.)
Query the history database db rather than the default history database.
Rather than expecting a message-ID on the command line, grephistory
will read a list of message-IDs 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-IDs which are not found in the
history database. This is used when processing ihave
control messages.
Display the entire line from the history database, rather than just the storage API token. If the message-ID is present in the history database but has no storage API token, grephistory does not print anything.
If the message-ID is present in the history database but has no storage
API token, print /dev/null
and exit successfully. This can happen if
an article has been cancelled or expired, but history information has
still been retained. This is the default behavior.
Don't print any message, but still exit with the appropriate status.
Rather than expecting a message-ID on the command line, grephistory
will read a list of message-IDs on standard input, one per line. Leading
and trailing whitespace is ignored, as are any malformed lines. It will
print on standard output the storage API tokens for any articles that are
still available, one per line. This flag is used when processing
sendme
control messages.
Print out the hash of the message-ID for diagnostic purposes, as well as any other requested information. This flag is not useful with -i or -s.
In case the requested article is not listed in the history database:
% grephistory '<unknown.article@news.example.com>' grephistory: not found % grephistory -v '<unknown.article@news.example.com>' grephistory: not found (hash is 501C66C22932BA91131186D7218201EB)
In case the requested article is listed in the history database but not stored on the server:
% grephistory '<remembered.article@news.example.com>' /dev/null
In case the requested article is stored on the server:
% grephistory '<87fxeaay1z.fsf@windlord.stanford.edu>' @02014A2DD6231FCC00000000000000000000@ % grephistory -l '<87fxeaay1z.fsf@windlord.stanford.edu>' [B6DDF69376E3CC199246CEC949B3ACAC] 1244517923~-~1244517912 @02014A2DD6231FCC00000000000000000000@
With sm, we can retrieve the article, and get its posting date:
% grephistory '<87fxeaay1z.fsf@windlord.stanford.edu>' | sm | grep Date Date: Mon, 08 Jun 2009 20:25:12 -0700 % convdate -dc 1244517912 Tue, 9 Jun 2009 03:25:12 -0000 (UTC)
It matches the number recorded in history as for its posting date.
Written by Rich $alz <rsalz@uunet.uu.net> for InterNetNews. Rewritten in POD by Russ Allbery <eagle@eyrie.org>.
history(5), inn.conf(5), sm(1).
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