X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fjournalctl.xml;h=e7fff0c9dca23e7fa0a884779fad8c1c0c0c8b8a;hp=f9abbfb2308ffe0267d47c13fe9cdba35b36af7a;hb=d4205751d4643c272059a3728045929dd0e5e800;hpb=dca6219e04505e9fa10b32e71059ce2abfae1dad diff --git a/man/journalctl.xml b/man/journalctl.xml index f9abbfb23..e7fff0c9d 100644 --- a/man/journalctl.xml +++ b/man/journalctl.xml @@ -62,7 +62,7 @@ journal as written by systemd-journald.service8. - If called without parameter will show the full + If called without parameter it will show the full contents of the journal, starting with the oldest entry collected. @@ -86,6 +86,15 @@ command line all matches before and after are combined in a disjunction (i.e. logical OR). + As shortcuts for a few types of field/value + matches file paths may be specified. If a file path + refers to an executable file, this is equivalent to an + _EXE= match for the canonicalized + binary path. Similar, if a path refers to a device + node, this is equivalent to a + _KERNEL_DEVICE= match for the + device. + Output is interleaved from all accessible journal files, whether they are rotated or currently being written, and regardless whether they belong to the @@ -140,7 +149,7 @@ - Show only most recent + Show only the most recent journal entries, and continuously print new entries as they are appended to the journal. @@ -150,13 +159,13 @@ - Controls the number of - journal lines to show, counting from - the most recent ones. Takes a positive - integer argument. In follow mode - defaults to 10, otherwise is unset - thus not limiting how many lines are - shown. + Show the most recent + journal events and limit the number of + events shown. If + is used, + this option is implied. The argument, + a positive integer, is optional, and + defaults to 10. @@ -173,13 +182,15 @@ Controls the - formatting of the journal entries that are - shown. Takes one of + formatting of the journal entries that + are shown. Takes one of short, short-monotonic, verbose, export, json, + json-pretty, + json-sse, cat. short is the default and generates an output that is mostly identical to the @@ -195,15 +206,51 @@ serializes the journal into a binary (but mostly text-based) stream suitable for backups and network - transfer. json + transfer (see Journal + Export Format for more + information). json formats entries as JSON data - structures. cat + structures, one per + line (see Journal + JSON Format for more + information). json-pretty + also formats entries as JSON data + structures, but formats them in + multiple lines in order to make them + more readable for + humans. json-sse + also formats entries as JSON data + structures, but wraps them in a format + suitable for Server-Sent + Events. cat generates a very terse output only showing the actual message of each journal entry with no meta data, not even a timestamp. + + + + + Augment log lines with + explanation texts from the message + catalog. This will add explanatory + help texts to log messages in the + output where this is available. These + short help texts will explain the + context of an error or log event, + possible solutions, as well as + pointers to support forums, developer + documentation and any other relevant + manuals. Note that help texts are not + available for all messages but only + for selected ones. + + @@ -215,11 +262,13 @@ - - + + - Show only locally - generated messages. + Show entries + interleaved from all available + journals, including remote + ones. @@ -227,7 +276,106 @@ Show data only from - current boot. + current boot. This will add a match + for _BOOT_ID= for + the current boot ID of the + kernel. + + + + + + + Show data only of the + specified unit. This will add a match + for _SYSTEMD_UNIT= + for the specified + unit. + + + + + + + Filter output by + message priorities or priority + ranges. Takes either a single numeric + or textual log level (i.e. between + 0/emerg and + 7/debug), or a + range of numeric/text log levels in + the form FROM..TO. The log levels are + the usual syslog log levels as + documented in + syslog3, + i.e. emerg (0), + alert (1), + crit (2), + err (3), + warning (4), + notice (5), + info (6), + debug (7). If a + single log level is specified all + messages with this log level or a + lower (hence more important) log level + are shown. If a range is specified all + messages within the range are shown, + including both the start and the end + value of the range. This will add + PRIORITY= matches + for the specified + priorities. + + + + + + + Start showing entries + from the location in the journal + specified by the passed + cursor. + + + + + + + Start showing entries + on or newer than the specified date, + or on or older than the specified + date, respectively. Date specifications should be of + the format "2012-10-30 18:17:16". If + the time part is omitted, 00:00:00 is + assumed. If only the seconds component + is omitted, :00 is assumed. If the + date component is ommitted, the + current day is assumed. Alternatively + the strings + yesterday, + today, + tomorrow are + understood, which refer to 00:00:00 of + the day before the current day, the + current day, or the day after the + current day, respectively. now + refers to the current time. Finally, + relative times may be specified, + prefixed with - or + +, referring to + times before or after the current + time, respectively. + + + + + + + Print all possible + data values the specified field can + take in all entries of the + journal. @@ -236,7 +384,7 @@ Takes an absolute directory path as argument. If - specified will operate on the + specified journalctl will operate on the specified journal directory instead of the default runtime and system journal paths. @@ -263,10 +411,88 @@ Instead of showing journal contents show internal header - information of the journal fiels + information of the journal fields accessed. + + + + Shows the current disk + usage of all + journal files. + + + + + + List the contents of + the message catalog, as table of + message IDs plus their short + description strings. + + + + + + Update the message + catalog index. This command needs to + be executed each time new catalog + files are installed, removed or + updated to rebuild the binary catalog + index. + + + + + + Instead of showing + journal contents generate a new key + pair for Forward Secure Sealing + (FSS). This will generate a sealing + key and a verification key. The + sealing key is stored in the journal + data directory and shall remain on the + host. The verification key should be + stored externally. + + + + + + Specifies the change + interval for the sealing key, when + generating an FSS key pair with + . Shorter + intervals increase CPU consumption but + shorten the time range of + undetectable journal + alterations. Defaults to + 15min. + + + + + + Check the journal file + for internal consistency. If the + file has been generated with FSS + enabled, and the FSS verification key + has been specified with + + authenticity of the journal file is + verified. + + + + + + Specifies the FSS + verification key to use for the + + operation. + + @@ -314,7 +540,7 @@ journalctl _SYSTEMD_UNIT=avahi-daemon.service _SYSTEMD_UNIT=dbus.service If the separator "+" is used - two expression may be combined in a logical OR. The + two expressions may be combined in a logical OR. The following will show all messages from the Avahi service process with the PID 28097 plus all messages from the D-Bus service (from any of its @@ -322,6 +548,14 @@ journalctl _SYSTEMD_UNIT=avahi-daemon.service _PID=28097 + _SYSTEMD_UNIT=dbus.service + Show all logs generated by the D-Bus executable: + + journalctl /usr/bin/dbus-daemon + + Show all logs of the kernel device node /dev/sda: + + journalctl /dev/sda +