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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:34:10 +0000
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+include::../docbook/attributes.adoc[]
+= capinfos(1)
+:doctype: manpage
+:stylesheet: ws.css
+:linkcss:
+:copycss: ../docbook/{stylesheet}
+
+== NAME
+
+capinfos - Prints information about capture files
+
+== SYNOPSIS
+
+[manarg]
+*capinfos*
+[ *-a* ]
+[ *-A* ]
+[ *-b* ]
+[ *-B* ]
+[ *-c* ]
+[ *-C* ]
+[ *-d* ]
+[ *-D* ]
+[ *-e* ]
+[ *-E* ]
+[ *-F* ]
+[ *-h* ]
+[ *-H* ]
+[ *-i* ]
+[ *-I* ]
+[ *-k* ]
+[ *-K* ]
+[ *-l* ]
+[ *-L* ]
+[ *-m* ]
+[ *-M* ]
+[ *-n* ]
+[ *-N* ]
+[ *-o* ]
+[ *-p* ]
+[ *-P* ]
+[ *-q* ]
+[ *-Q* ]
+[ *-r* ]
+[ *-R* ]
+[ *-s* ]
+[ *-S* ]
+[ *-t* ]
+[ *-T* ]
+[ *-u* ]
+[ *-v* ]
+[ *-x* ]
+[ *-y* ]
+[ *-z* ]
+<__infile__>
+__...__
+
+[manarg]
+*capinfos*
+*-h|--help*
+
+[manarg]
+*capinfos*
+*-v|--version*
+
+== DESCRIPTION
+
+*Capinfos* is a program that reads one or more capture files and
+returns some or all available statistics (infos) of each <__infile__>
+in one of two types of output formats: long or table.
+
+The long output is suitable for a human to read. The table output
+is useful for generating a report that can be easily imported into
+a spreadsheet or database.
+
+The user specifies what type of output (long or table) and which
+statistics to display by specifying flags (options) that corresponding
+to the report type and desired infos. If no options are specified,
+*Capinfos* will report all statistics available in "long" format.
+
+Options are processed from left to right order with later options
+superseding or adding to earlier options.
+
+*Capinfos* is able to detect and read the same capture files that are
+supported by *Wireshark*.
+The input files don't need a specific filename extension; the file
+format and an optional gzip, zstd or lz4 compression will be automatically detected.
+Near the beginning of the DESCRIPTION section of xref:wireshark.html[wireshark](1) or
+https://www.wireshark.org/docs/man-pages/wireshark.html
+is a detailed description of the way *Wireshark* handles this, which is
+the same way *Capinfos* handles this.
+
+== OPTIONS
+
+-a::
+Displays the start time of the capture. *Capinfos* considers
+the earliest timestamp seen to be the start time, so the
+first packet in the capture is not necessarily the earliest -
+if packets exist "out-of-order", time-wise, in the capture,
+*Capinfos* detects this.
+
+-A::
+Generate all infos. By default *Capinfos* will display
+all infos values for each input file, but enabling
+any of the individual display infos options will
+disable the generate all option.
+
+-b::
++
+--
+Separate infos with ASCII SPACE (0x20) characters.
+This option is only useful when generating a table
+style report (-T). The various info values will be
+separated (delimited) from one another with a single
+ASCII SPACE character.
+
+NOTE: Since some of the header labels as well as some
+of the value fields contain SPACE characters. This
+option is of limited value unless one of the quoting
+options (-q or -Q) is also specified.
+--
+
+-B::
+Separate the infos with ASCII TAB characters.
+This option is only useful when generating a table
+style report (-T). The various info values will be
+separated (delimited) from one another with a single
+ASCII TAB character. The TAB character is the default
+delimiter when -T style report is enabled.
+
+-c::
+Displays the number of packets in the capture file.
+
+-C::
++
+--
+Cancel processing any additional files if and
+when *Capinfos* fails to open an input file
+or gets an error reading an input file.
+By default *Capinfos* will continue processing files
+even if it gets an error opening or reading a file.
+
+Note: An error message will be written to stderr
+whenever *Capinfos* fails to open a file or gets
+an error reading from a file regardless whether
+the -C option is specified or not.
+Upon exit, *Capinfos* will return an error status
+if any errors occurred during processing.
+--
+
+-d::
+Displays the total length of all packets in the file, in
+bytes. This counts the size of the packets as they appeared
+in their original form, not as they appear in this file.
+For example, if a packet was originally 1514 bytes and only
+256 of those bytes were saved to the capture file (if packets
+were captured with a snaplen or other slicing option),
+*Capinfos* will consider the packet to have been 1514 bytes.
+
+-D::
+Displays a count of the number of decryption secrets in the file. This information
+is not available in table format.
+
+-e::
+Displays the end time of the capture. *Capinfos* considers
+the latest timestamp seen to be the end time, so the
+last packet in the capture is not necessarily the latest -
+if packets exist "out-of-order", time-wise, in the capture,
+*Capinfos* detects this.
+
+-E::
+Displays the per-file encapsulation of the capture file.
+
+-F::
+Displays additional capture file information.
+
+-h|--help::
+Print the version number and options and exit.
+
+-H::
+Displays the SHA256 and SHA1 hashes for the file.
+SHA1 output may be removed in the future.
+
+-i::
+Displays the average data rate, in bits/sec
+
+-I::
+Displays detailed capture file interface information. This information
+is not available in table format.
+
+-k::
+Displays the capture comment. For pcapng files, this is the comment from the
+section header block.
+
+-K::
+Use this option to suppress printing capture comments. By default capture
+comments are enabled. Capture comments are relatively freeform and might
+contain embedded new-line characters and/or other delimiting characters
+making it harder for a human or machine to easily parse the *Capinfos* output.
+Excluding capture comments can aid in post-processing of output.
+
+-l::
+Display the snaplen (if any) for a file.
+snaplen (if available) is determined from the capture file header
+and by looking for truncated records in the capture file.
+
+-L::
+Generate long report. *Capinfos* can generate two
+different styles of reports. The "long" report is
+the default style of output and is suitable for a
+human to use.
+
+-m::
+Separate the infos with comma (,) characters. This option
+is only useful when generating a table style report (-T).
+The various info values will be separated (delimited)
+from one another with a single comma "," character.
+
+-M::
+Print raw (machine readable) values in long reports.
+By default *Capinfos* prints numeric values with human-readable SI
+suffixes, and shows human-readable file type and encapsulation.
+Table reports (-T) always print raw values.
+
+-n::
+Displays a count of the number of resolved IPv4 addresses and a count of
+the number of resolved IPv6 addresses in the file. This information
+is not available in table format.
+
+-N::
+Do not quote the infos. This option is only useful
+when generating a table style report (-T). Excluding
+any quoting characters around the various values and
+using a TAB delimiter produces a very "clean" table
+report that is easily parsed with CLI tools. By
+default infos are *NOT* quoted.
+
+-o::
+Displays "True" if packets exist in strict chronological order
+or "False" if one or more packets in the capture exists
+"out-of-order" time-wise.
+
+-p::
+Display individual packet comments. It is recommended
+to print raw values (-M) when using this option as
+packet comments may include newlines and other special
+characters.
+
+-P::
+Disable displaying individual packet comments.
+
+-q::
+Quote infos with single quotes ('). This option is
+only useful when generating a table style report (-T).
+When this option is enabled, each value will be
+encapsulated within a pair of single quote (')
+characters. This option (when used with the -m
+option) is useful for generating one type of CSV
+style file report.
+
+-Q::
+Quote infos with double quotes ("). This option is
+only useful when generating a table style report (-T).
+When this option is enabled, each value will be
+encapsulated within a pair of double quote (")
+characters. This option (when used with the -m
+option) is useful for generating the most common
+type of CSV style file report.
+
+-r::
+Do not generate header record. This option is only
+useful when generating a table style report (-T).
+If this option is specified then *no* header record will be
+generated within the table report.
+
+-R::
+Generate header record. This option is only useful
+when generating a table style report (-T). A header
+is generated by default. A header record (if generated)
+is the first line of data reported and includes labels
+for all the columns included within the table report.
+
+-s::
+Displays the size of the file, in bytes. This reports
+the size of the capture file itself.
+
+-S::
+Display the start and end times as seconds since January
+1, 1970. Handy for synchronizing dumps using *editcap -t*.
+
+-t::
+Displays the capture type of the capture file.
+
+-T::
+Generate a table report. A table report is a text file
+that is suitable for importing into a spreadsheet or
+database. *Capinfos* can build a tab delimited text file
+(the default) or several variations on Comma-separated
+values (CSV) files.
+
+-u::
+Displays the capture duration, in seconds. This is the
+difference in time between the earliest packet seen and
+latest packet seen.
+
+-v|--version::
+Print the full version information and exit.
+
+-x::
+Displays the average packet rate, in packets/sec
+
+-y::
+Displays the average data rate, in bytes/sec
+
+-z::
+Displays the average packet size, in bytes
+
+include::diagnostic-options.adoc[]
+
+== EXAMPLES
+
+To see a description of the options use:
+
+ capinfos -h
+
+To generate a long form report for the capture file
+mycapture.pcap use:
+
+ capinfos mycapture.pcap
+
+To generate a TAB delimited table form report for the capture
+file mycapture.pcap use:
+
+ capinfos -T mycapture.pcap
+
+To generate a CSV style table form report for the capture
+file mycapture.pcap use:
+
+ capinfos -T -m -Q mycapture.pcap
+
+or
+
+ capinfos -TmQ mycapture.pcap
+
+To generate a TAB delimited table style report with just the
+filenames, capture type, capture encapsulation type and packet
+count for all the pcap files in the current directory use:
+
+ capinfos -T -t -E -c *.pcap
+
+or
+
+ capinfos -TtEc *.pcap
+
+Note: The ability to use of filename globbing characters are
+a feature of *nix style command shells.
+
+To generate a CSV delimited table style report of all infos
+for all pcap files in the current directory and write it to
+a text file called mycaptures.csv use:
+
+ capinfos -TmQ *.pcap >mycaptures.csv
+
+The resulting mycaptures.csv file can be easily imported
+into spreadsheet applications.
+
+== SEE ALSO
+
+xref:https://www.tcpdump.org/manpages/pcap.3pcap.html[pcap](3), xref:wireshark.html[wireshark](1), xref:mergecap.html[mergecap](1), xref:editcap.html[editcap](1), xref:tshark.html[tshark](1),
+xref:dumpcap.html[dumpcap](1), xref:captype.html[captype](1), xref:https://www.tcpdump.org/manpages/pcap-filter.7.html[pcap-filter](7) or xref:https://www.tcpdump.org/manpages/tcpdump.1.html[tcpdump](8)
+
+== NOTES
+
+This is the manual page for *Capinfos* {wireshark-version}.
+*Capinfos* is part of the *Wireshark* distribution.
+The latest version of *Wireshark* can be found at https://www.wireshark.org.
+
+HTML versions of the Wireshark project man pages are available at
+https://www.wireshark.org/docs/man-pages.
+
+== AUTHORS
+
+.Original Author
+[%hardbreaks]
+Ian Schorr <ian[AT]ianschorr.com>
+
+.Contributors
+[%hardbreaks]
+Gerald Combs <gerald[AT]wireshark.org>
+Jim Young <jyoung[AT]gsu.edu>