<literal>_KERNEL_DEVICE=</literal> match for the
device.</para>
- <para>Additional contraints may be added using options
+ <para>Additional constraints may be added using options
<option>--boot</option>, <option>--unit=</option>,
- etc, to futher limit what entries will be shown
+ etc, to further limit what entries will be shown
(logical AND).</para>
<para>Output is interleaved from all accessible
<option>--no-pager</option> option and the "Environment"
section below.</para>
- <para>When outputing to a tty, lines are colored
+ <para>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; other lines are displayed normally.
that the pager will not buffer logs of
unbounded size. This may be overridden
with an explicit <option>-n</option>
- with some other numeric value on the
- command line. Note that this option is
- only supported for the
+ with some other numeric value while
+ <option>-nall</option> will disable this cap.
+ Note that this option is only supported for the
<citerefentry project='man-pages'><refentrytitle>less</refentrytitle><manvolnum>1</manvolnum></citerefentry>
pager.</para></listitem>
</varlistentry>
journal events and limit the number of
events shown. If
<option>--follow</option> is used,
- this option is implied. The argument,
- a positive integer, is optional, and
- defaults to 10. </para></listitem>
+ this option is implied. The argument is
+ a positive integer or <literal>all</literal>
+ to disable line limiting. The default value is
+ 10 if no argument is given.</para></listitem>
</varlistentry>
<varlistentry>
</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><option>-t</option></term>
+ <term><option>--identifier=<replaceable>SYSLOG_IDENTIFIER</replaceable>|<replaceable>PATTERN</replaceable></option></term>
+
+ <listitem><para>Show messages for the
+ specified syslog identifier
+ <replaceable>SYSLOG_IDENTIFIER</replaceable>, or
+ for any of the messages with a <literal>SYSLOG_IDENTIFIER</literal>
+ matched by <replaceable>PATTERN</replaceable>.</para>
+
+ <para>This parameter can be specified
+ multiple times.</para></listitem>
+ </varlistentry>
+
<varlistentry>
<term><option>-u</option></term>
<term><option>--unit=<replaceable>UNIT</replaceable>|<replaceable>PATTERN</replaceable></option></term>
<listitem><para>Show messages for the
specified systemd unit
- <replaceable>UNIT</replaceable>, or
- for any of the units matched by
+ <replaceable>UNIT</replaceable> (such
+ as a service unit), or for any of the
+ units matched by
<replaceable>PATTERN</replaceable>.
If a pattern is specified, a list of
unit names found in the journal is
<programlisting>journalctl -k -b -1</programlisting>
+ <para>Show a live log display from a system service <filename>apache.service</filename>:</para>
+
+ <programlisting>journalctl -f -u apache</programlisting>
+
</refsect1>
<refsect1>