--db path | Query this database directory.
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--file path | Query the data stream in this file.
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--from time | (required) The starting date and time of the query in an absolute time like "YYYY-MM-DD HH:MM:SS" or "YYYY-MM-DD" or a relative time like 5s, 5m, 5h, 5d to indicate five seconds, minutes, hours, or days ago, respectively.
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--to time | The ending time of the query, in the same format as the --from option. If omitted, the current time is assumed.
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--every interval | The intervals at which output should be produced, like 5s, 5m, 5h, 5d to indicate five seconds, minutes, hours, or days ago, respectively.
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--epoch | Causes the output to be expressed in integer Unix epoch time, instead of a formatted time.
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--filter expr | (multiple) If given, only records matching this expression will be processed. Use --filter to apply expressions that do not change over time, such as the name or type of a record.
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--where expr | (multiple) If given, only records matching this expression will be displayed. Use --where to apply expressions that may change over time, such as load average or storage space consumed.
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--output expr | (multiple) Display this expression on the output.
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