X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fjournalctl.xml;h=0703bf9fb613f45c58370174b1beab5f4c104aca;hp=952b37c531b5453af4fb8674bcd0fb0618300a73;hb=fbcedaaea4705a0548d50d9702ece04f73847344;hpb=b6741478e7661c7e580e5dcfd6a6fccd1899c1d0 diff --git a/man/journalctl.xml b/man/journalctl.xml index 952b37c53..0703bf9fb 100644 --- a/man/journalctl.xml +++ b/man/journalctl.xml @@ -21,7 +21,8 @@ along with systemd; If not, see . --> - + journalctl @@ -83,10 +84,11 @@ field, then they are automatically matched as alternatives, i.e. the resulting output will show entries matching any of the specified matches for the - same field. Finally, if the character - + appears as separate word on the - command line, all matches before and after are combined - in a disjunction (i.e. logical OR). + same field. Finally, the character + + may appears as a separate word + between other terms on the command line. This causes + all matches before and after to be 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 @@ -97,11 +99,21 @@ _KERNEL_DEVICE= match for the device. + Additional constraints may be added using options + , , + etc, to further limit what entries will be shown + (logical AND). + Output is interleaved from all accessible journal files, whether they are rotated or currently being written, and regardless of whether they belong to the system itself or are accessible user journals. + The set of journal files which will be used + can be modified using the , + , , + and options, see below. + All users are granted access to their private per-user journals. However, by default, only root and users who are members of the systemd-journal @@ -112,14 +124,14 @@ less by default, and long lines are "truncated" to screen width. The hidden part can be viewed by using the left-arrow and right-arrow - keys. Paging can be disabled, see - and section Environment - below. + keys. Paging can be disabled; see the + option and the "Environment" + section below. - When outputing to a tty, lines are colored + When outputting to a tty, lines are colored according to priority: lines of level ERROR and higher - are colored red, lines of level NOTICE and higher are - highlighted, and other lines are displayed normally. + are colored red; lines of level NOTICE and higher are + highlighted; other lines are displayed normally. @@ -129,28 +141,6 @@ The following options are understood: - - - - - Prints a short help - text and exits. - - - - - - Prints a short version - string and exits. - - - - - - Do not pipe output into a - pager. - - @@ -160,7 +150,7 @@ they do not fit in available columns. The default is to show full fields, allowing them to wrap or be truncated - by the pager if one is used. + by the pager, if one is used. The old options / @@ -199,10 +189,10 @@ that the pager will not buffer logs of unbounded size. This may be overridden with an explicit - with some other numeric value on the - command line. Note that this option is - only supported for the - less1 + with some other numeric value while + will disable this cap. + Note that this option is only supported for the + less1 pager. @@ -214,9 +204,10 @@ 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. + this option is implied. The argument is + a positive integer or all + to disable line limiting. The default value is + 10 if no argument is given. @@ -232,7 +223,7 @@ - Reverse output, so the newest + Reverse output so that the newest entries are displayed first. @@ -352,7 +343,7 @@ but formats them in multiple lines in order to make them more - readable for humans. + readable by humans. @@ -376,10 +367,10 @@ generates a very - terse output only + terse output, only showing the actual message of each journal - entry with no meta data, + entry with no metadata, not even a timestamp. @@ -388,6 +379,13 @@ + + + + Express time in Coordinated Universal + Time (UTC). + + @@ -424,8 +422,8 @@ Suppresses any warning - message regarding inaccessible system - journals when run as normal + messages regarding inaccessible system + journals when run as a normal user. @@ -457,11 +455,11 @@ offset will look up boots starting from the end of the journal. Thus, 1 means the - first boot found in the journal in the + first boot found in the journal in chronological order, 2 the second and so on; while -0 is the last boot, -1 the - boot before that, and so on. An empty + boot before last, and so on. An empty offset is equivalent to specifying -0, except when the current boot is not the last boot @@ -469,7 +467,7 @@ specified to look at logs from a different machine). - If the 32 character + If the 32-character ID is specified, it may optionally be followed by offset which @@ -478,7 +476,7 @@ values mean earlier boots and a positive values mean later boots. If offset is not - specified, a value of zero is assumed and the + specified, a value of zero is assumed, and the logs for the boot given by ID are shown. @@ -490,7 +488,7 @@ Show a tabular list of - boot numbers (relative to current + boot numbers (relative to the current boot), their IDs, and the timestamps of the first and last message pertaining to the boot. @@ -507,19 +505,44 @@ + + + + + Show messages for the + specified syslog identifier + SYSLOG_IDENTIFIER, or + for any of the messages with a SYSLOG_IDENTIFIER + matched by PATTERN. + + This parameter can be specified + multiple times. + + - + Show messages for the - specified systemd unit. This will add - a match for messages from the unit - (_SYSTEMD_UNIT=) - and additional matches for messages - from systemd and messages about - coredumps for the specified unit. - This parameter can be specified multiple times. - + specified systemd unit + UNIT (such + as a service unit), or for any of the + units matched by + PATTERN. + If a pattern is specified, a list of + unit names found in the journal is + compared with the specified pattern + and all that match are used. For each + unit name, a match is added for + messages from the unit + (_SYSTEMD_UNIT=UNIT), + along with additional matches for + messages from systemd and messages + about coredumps for the specified + unit. + + This parameter can be specified + multiple times. @@ -551,7 +574,7 @@ the form FROM..TO. The log levels are the usual syslog log levels as documented in - syslog3, + syslog3, i.e. emerg (0), alert (1), crit (2), @@ -585,11 +608,23 @@ - Start showing entries from the - location in the journal - after the location - specified by the this cursor. - + Start showing entries + from the location in the journal + after the + location specified by the this cursor. + The cursor is shown when the + option + is used. + + + + + + The cursor is shown after the last + entry after two dashes: + -- cursor: s=0639... + The format of the cursor is private + and subject to change. @@ -639,7 +674,7 @@ Show messages from system services and the kernel (with - ). Show + ). Show messages from service of current user (with ). If neither is specified, show all @@ -673,7 +708,7 @@ - Takes a file glob as + Takes a file glob as an argument. If specified, journalctl will operate on the specified journal files matching GLOB @@ -687,7 +722,7 @@ Takes a directory path - as argument. If specified, journalctl + as an argument. If specified, journalctl will operate on catalog file hierarchy underneath the specified directory instead of the root directory @@ -701,8 +736,8 @@ Instead of showing - journal contents, generate a new 128 - bit ID suitable for identifying + journal contents, generate a new 128-bit + ID suitable for identifying messages. This is intended for usage by developers who need a new identifier for a new message they @@ -726,22 +761,51 @@ Shows the current disk - usage of all - journal files. + usage of all journal files. This shows + the sum of the disk usage of all + archived and active journal + files. + + + + + + + Removes archived + journal files until the disk space + they use falls below the specified + size (specified with the usual K, M, + G, T suffixes), or all journal files + contain no data older than the + specified timespan (specified with the + usual s, min, h, days, months, weeks, + years suffixes). Note that running + has + only indirect effect on the output + shown by + as the latter includes active journal + files, while the former only operates + on archived journal + files. + and + may be combined in a single invocation + to enforce both a size and time limit + on the archived journal + files. List the contents of - the message catalog, as table of - message IDs plus their short + the message catalog as a table of + message IDs, plus their short description strings. If any - ID128s are + 128-bit-IDs are specified, only those entries are shown. @@ -749,18 +813,18 @@ Show the contents of the message catalog, with entries separated by a line consisting of two - dashes and the id (the format is the + dashes and the ID (the format is the same as .catalog - files. + files). If any - ID128s are + 128-bit-IDs are specified, only those entries are shown. @@ -772,7 +836,7 @@ Update the message catalog index. This command needs to be executed each time new catalog - files are installed, removed or + files are installed, removed, or updated to rebuild the binary catalog index. @@ -788,18 +852,23 @@ sealing key is stored in the journal data directory and shall remain on the host. The verification key should be - stored externally. Also see the + stored externally. Refer to the option in journald.conf5 - for details. + for information on Forward Secure + Sealing and for a link to a refereed + scholarly paper detailing the + cryptographic theory it is based on. + - When --setup-keys is passed and - Forward Secure Sealing has already been set up, - recreate FSS keys. + When + is passed and + Forward Secure Sealing (FSS) has already been + configured, recreate FSS keys. @@ -838,31 +907,34 @@ operation. + + + + Asks the Journal + daemon to flush any log data stored in + /run/log/journal + into + /var/log/journal, + if persistent storage is enabled. This + call does not return until the + operation is + complete. + + + + + Exit status - On success, 0 is returned, a non-zero failure - code otherwise. + On success, 0 is returned; otherwise, a non-zero + failure code is returned. - - Environment - - - - $SYSTEMD_PAGER - Pager to use when - is not given; - overrides $PAGER. Setting - this to an empty string or the value - cat is equivalent to passing - . - - - + Examples @@ -905,6 +977,10 @@ journalctl -k -b -1 + Show a live log display from a system service apache.service: + + journalctl -f -u apache + @@ -913,6 +989,7 @@ systemd1, systemd-journald.service8, systemctl1, + coredumpctl1, systemd.journal-fields7, journald.conf5