1SDJOURNAL(1) The Wireshark Network Analyzer SDJOURNAL(1)
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6 sdjournal - Provide an interface to capture systemd journal entries.
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9 sdjournal [ --help ] [ --version ] [ --extcap-interfaces ]
10 [ --extcap-dlts ] [ --extcap-interface=<interface> ]
11 [ --extcap-config ] [ --capture ] [ --fifo=<path to file or pipe> ]
12 [ --start-from=<entry count> ]
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15 sdjournal is an extcap tool that allows one to capture systemd journal
16 entries. It can be used to correlate system events with network
17 traffic.
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19 Supported interfaces:
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21 1. sdjournal
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24 --help
25 Print program arguments.
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27 --version
28 Print program version.
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30 --extcap-interfaces
31 List available interfaces.
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33 --extcap-interface=<interface>
34 Use specified interfaces.
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36 --extcap-dlts
37 List DLTs of specified interface.
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39 --extcap-config
40 List configuration options of specified interface.
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42 --capture
43 Start capturing from specified interface and write raw packet data
44 to the location specified by --fifo.
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46 --fifo=<path to file or pipe>
47 Save captured packet to file or send it through pipe.
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49 --start-from=<entry count>
50 Start from the last <entry count> entries, similar to the "-n" or
51 "--lines" argument for the tail(1) command. Values prefixed with a
52 + sign start from the beginning of the journal, otherwise the count
53 starts from the end. The default value is 10. To include all
54 entries use +0.
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57 To see program arguments:
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59 sdjournal --help
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61 To see program version:
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63 sdjournal --version
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65 To see interfaces:
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67 sdjournal --extcap-interfaces
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69 Only one interface (sdjournal) is supported.
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71 Output:
72 interface {value=sdjournal}{display=systemd journal capture}
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74 To see interface DLTs:
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76 sdjournal --extcap-interface=sdjournal --extcap-dlts
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78 Output:
79 dlt {number=147}{name=sdjournal}{display=USER0}
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81 To see interface configuration options:
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83 sdjournal --extcap-interface=sdjournal --extcap-config
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85 Output:
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87 arg {number=0}{call=--start-from}{display=Starting position}{type=string}
88 {tooltip=The journal starting position. Values with a leading "+" start from the beginning, similar to the "tail" command}
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90 To capture:
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92 sdjournal --extcap-interface=sdjournal --fifo=/tmp/sdjournal.pcap --capture
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94 To capture all entries since the system was booted:
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96 sdjournal --extcap-interface=sdjournal --fifo=/tmp/sdjournal.pcap --capture --start-from +0
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98 NOTE: To stop capturing CTRL+C/kill/terminate application.
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101 wireshark(1), tshark(1), dumpcap(1), extcap(4), tcpdump(1)
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104 sdjournal is part of the Wireshark distribution. The latest version of
105 Wireshark can be found at <https://www.wireshark.org>.
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107 HTML versions of the Wireshark project man pages are available at:
108 <https://www.wireshark.org/docs/man-pages>.
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111 Original Author
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113 Gerald Combs <gerald[AT]wireshark.org>
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1173.0.1 2019-04-08 SDJOURNAL(1)