source: BOOK/final-system/common/procps-ng.xml@ d3b105f

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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
  "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;
]>

<sect1 id="ch-system-procps-ng" role="wrap">
  <?dbhtml filename="procps-ng.html"?>

  <title>Procps-ng-&procps-ng-version;</title>

  <indexterm zone="ch-system-procps-ng">
    <primary sortas="a-Procps-ng">Procps-ng</primary>
  </indexterm>

  <sect2 role="package">
    <title/>

    <para>The Procps-ng package contains programs for monitoring
    processes.</para>

  </sect2>

  <sect2 role="installation">
    <title>Installation of Procps-ng</title>

    <para os="a">Prepare procps-ng for compilation:</para>

<screen os="b"><userinput>./configure --prefix=/usr --exec-prefix= \
    --libdir=/usr/lib --docdir=/usr/share/doc/procps-ng-&procps-ng-version; \
    --disable-kill</userinput></screen>

    <variablelist os="c">
      <title>The meaning of the configure options:</title>
      <varlistentry>
        <term><parameter>--disable-kill</parameter></term>
        <listitem>
          <para>This switch disables building the kill command that
          was installed in the util-linux package.</para>
        </listitem>
      </varlistentry>
    </variablelist>

    <para os="d">Compile the package:</para>

<screen os="e"><userinput>make</userinput></screen>

    <note os="note1">
      <para>When using the boot method, two tests will fail if the hostname is
      not set:</para>

<screen><userinput remap="test">hostname clfs</userinput></screen>
    </note>

    <para os="f">Remove the test which fails when scripting does not use a tty
    device. Run the following commands:</para>

<screen os="g"><userinput remap="test">sed -i -r 's|(pmap_initname)\\\$|\1|' testsuite/pmap.test/pmap.exp
make check</userinput></screen>

    <para os="h">Install the package:</para>

<screen os="i"><userinput>make install</userinput></screen>

    <para os="j">Move essential files to a location that can be found if <filename class="directory">/usr</filename> is not mounted.</para>

<screen os="k"><userinput>mv -v /usr/bin/pidof /bin
mv -v /usr/lib/libprocps.so.* /lib
ln -sfv ../../lib/$(readlink /usr/lib/libprocps.so) /usr/lib/libprocps.so</userinput></screen>

  </sect2>

  <sect2 id="contents-procps-ng" role="content">
    <title>Contents of Procps-ng</title>

    <segmentedlist>
      <segtitle>Installed programs</segtitle>
      <segtitle>Installed library</segtitle>
      <segtitle>Installed directories</segtitle>

      <seglistitem>
        <seg>free, pgrep, pidof, pkill, pmap, ps, pwdx, slabtop, sysctl, tload,
        top, uptime, vmstat, w, and watch</seg>
        <seg>libprocps.{a,so}</seg>
        <seg>/usr/include/proc, /usr/share/doc/procps-ng-&procps-ng-version;</seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="free">
        <term><command>free</command></term>
        <listitem>
          <para>Reports the amount of free and used memory (both physical and
          swap memory) in the system</para>
          <indexterm zone="ch-system-procps-ng free">
            <primary sortas="b-free">free</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pgrep">
        <term><command>pgrep</command></term>
        <listitem>
          <para>Looks up processes based on their name and other attributes</para>
          <indexterm zone="ch-system-procps-ng pgrep">
            <primary sortas="b-pgrep">pgrep</primary>
          </indexterm>
        </listitem>
      </varlistentry>

<!--      <varlistentry id="pidof">
        <term><command>pidof</command></term>
        <listitem>
          <para>Looks up processes based on their name and other attributes</para>
          <indexterm zone="ch-system-procps-ng pidof">
            <primary sortas="b-pidof">pidof</primary>
          </indexterm>
        </listitem>
      </varlistentry> -->

      <varlistentry id="pkill">
        <term><command>pkill</command></term>
        <listitem>
          <para>Signals processes based on their name and other attributes</para>
          <indexterm zone="ch-system-procps-ng pkill">
            <primary sortas="b-pkill">pkill</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pmap">
        <term><command>pmap</command></term>
        <listitem>
          <para>Reports the memory map of the given process</para>
          <indexterm zone="ch-system-procps-ng pmap">
            <primary sortas="b-pmap">pmap</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="ps">
        <term><command>ps</command></term>
        <listitem>
          <para>Lists the current running processes</para>
          <indexterm zone="ch-system-procps-ng ps">
            <primary sortas="b-ps">ps</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pwdx">
        <term><command>pwdx</command></term>
        <listitem>
          <para>Reports the current working directory of a process</para>
          <indexterm zone="ch-system-procps-ng pwdx">
            <primary sortas="b-pwdx">pwdx</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="slabtop">
        <term><command>slabtop</command></term>
        <listitem>
          <para>Displays detailed kernel slab cache information in real time</para>
          <indexterm zone="ch-system-procps-ng slabtop">
            <primary sortas="b-slabtop">slabtop</primary>
          </indexterm>
        </listitem>
      </varlistentry>


      <varlistentry id="sysctl">
        <term><command>sysctl</command></term>
        <listitem>
          <para>Modifies kernel parameters at run time</para>
          <indexterm zone="ch-system-procps-ng sysctl">
            <primary sortas="b-sysctl">sysctl</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="tload">
        <term><command>tload</command></term>
        <listitem>
          <para>Prints a graph of the current system load average</para>
          <indexterm zone="ch-system-procps-ng tload">
            <primary sortas="b-tload">tload</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="top">
        <term><command>top</command></term>
        <listitem>
          <para>Displays a list of the most CPU intensive processes; it
          provides an ongoing look at processor activity in real time</para>
          <indexterm zone="ch-system-procps-ng top">
            <primary sortas="b-top">top</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="uptime">
        <term><command>uptime</command></term>
        <listitem>
          <para>Reports how long the system has been running, how many users are
          logged on, and the system load averages</para>
          <indexterm zone="ch-system-procps-ng uptime">
            <primary sortas="b-uptime">uptime</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="vmstat">
        <term><command>vmstat</command></term>
        <listitem>
          <para>Reports virtual memory statistics, giving information about
          processes, memory, paging, block Input/Output (IO), traps, and CPU
          activity</para>
          <indexterm zone="ch-system-procps-ng vmstat">
            <primary sortas="b-vmstat">vmstat</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="w">
        <term><command>w</command></term>
        <listitem>
          <para>Shows which users are currently logged on, where, and since
          when</para>
          <indexterm zone="ch-system-procps-ng w">
            <primary sortas="b-w">w</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="watch">
        <term><command>watch</command></term>
        <listitem>
          <para>Runs a given command repeatedly, displaying the first
          screen-full of its output; this allows a user to watch the output
          change over time</para>
          <indexterm zone="ch-system-procps-ng watch">
            <primary sortas="b-watch">watch</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libprocps">
        <term><filename class="libraryfile">libprocps</filename></term>
        <listitem>
          <para>Contains the functions used by most programs in this
          package</para>
          <indexterm zone="ch-system-procps-ng libprocps">
            <primary sortas="c-libprocps">libprocps</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>