Reference Guide

Table Of Contents
Qualifier Description
-r, --reverse Show the newest entries first.
-b, --boot Show current boot or the boot for the specified ID.
-k, --dmesg Show the kernel message log from the current boot.
-t, --identifier Show entries with the specified syslog identifier.
-p, --priority Filter output by message priorities or priority range.
-g, --grep Filter output to entries where the specified field matches the specified regular expression.
--case-sensitive
Make pattern matching case sensitive or case insensitive. Valid values are TRUE or FALSE.
-S, --since Show entries not older than the specified date.
-U, --until Show entries not newer than the specified date.
--system
Show the system journal.
--user
Show the user journal for the current user.
-D, --directory Show journal files from the specified directory.
--file
Show the specified journal file.
-f, --follow Show only the most recent journal entries, and continuously print new entries as they are appended to
the journal.
--output-fields
Show a comma-separated list of the fields that you want to include in the output.
Fields
The system journal contains entries with information (binary data) stored in fields with specific meaning. In addition, you can
use the optional arguments to filter the information that is based on these fields or on the value that these fields contain. For
example:
The following command establishes a basic field matching query to view log messages associated with the Platform
component. The command has a marker value of NDU and a message priority level of ERROR:
svc_journalctl COMPONENT=Platform MARKER=NDU PRIORITY=ERROR
The following command enables you to search for a specific case-sensitive text pattern in the log messages associated with
the Platform component:
svc_journalctl -g --case-sensitive=TRUE CONTEXT_ID=456abc COMPONENT=Platform
For more information about the journal fields, see System Journal Fields on page 90.
Output Format
When you run the script, the output appears in a set order of default fields. The following is a sample of the default output from
the script:
2019 Mar 11 14:51:45 FNM00175000815-A DEBUG CC CP bedrock.config.ConfigManagerVerticle
vert.x-eventloop-thread-0 no_ctx_id Starting to set injector.
Where:
Field
Value
__REALTIME_TIMESTAMP 2019 Mar 11 14:51:45
_HOSTNAME FNM00175000815-A
40 Service Commands