lfs-book/chapter06/psmisc.xml

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

  <sect1info condition="script">
    <productname>psmisc</productname>
    <productnumber>&psmisc-version;</productnumber>
    <address>&psmisc-url;</address>
  </sect1info>

  <title>Psmisc-&psmisc-version;</title>

  <indexterm zone="ch-system-psmisc">
    <primary sortas="a-Psmisc">Psmisc</primary>
  </indexterm>

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

    <para>The Psmisc package contains programs for displaying information about
    running processes.</para>

    <segmentedlist>
      <segtitle>&buildtime;</segtitle>
      <segtitle>&diskspace;</segtitle>

      <seglistitem>
        <seg>&psmisc-ch6-sbu;</seg>
        <seg>&psmisc-ch6-du;</seg>
      </seglistitem>
    </segmentedlist>

  </sect2>

  <sect2 role="installation">
    <title>Installation of Psmisc</title>

    <para>Prepare Psmisc for compilation:</para>

<screen><userinput remap="configure">./configure --prefix=/usr --exec-prefix=""</userinput></screen>

    <variablelist>
      <title>The meaning of the configure options:</title>

      <varlistentry>
        <term><parameter>--exec-prefix=""</parameter></term>
        <listitem>
          <para>This ensures that the Psmisc binaries will install into
          <filename class="directory">/bin</filename> instead of <filename
          class="directory">/usr/bin</filename>. This is the correct location
          according to the FHS, because some of the Psmisc binaries are used
          by the LFS-Bootscripts package.</para>
        </listitem>
      </varlistentry>

    </variablelist>

    <para>Compile the package:</para>

<screen><userinput remap="make">make</userinput></screen>

    <para>This package does not come with a test suite.</para>

    <para>Install the package:</para>

<screen><userinput remap="install">make install</userinput></screen>

    <para>There is no reason for the <command>pstree</command> and
    <command>pstree.x11</command> programs to reside in <filename
    class="directory">/bin</filename>. Therefore, move them to <filename
    class="directory">/usr/bin</filename>:</para>

<screen><userinput remap="install">mv -v /bin/pstree* /usr/bin</userinput></screen>

    <para>By default, Psmisc's <command>pidof</command> program is not
    installed. This usually is not a problem because it is installed later
    in the Sysvinit package, which provides a better
    <command>pidof</command> program. If Sysvinit will not be used for a
    particular system, complete the installation of Psmisc by creating the
    following symlink:</para>

<screen><userinput remap="install">ln -sv killall /bin/pidof</userinput></screen>

  </sect2>

  <sect2 id="contents-psmisc" role="content">
    <title>Contents of Psmisc</title>

    <segmentedlist>
      <segtitle>Installed programs</segtitle>

      <seglistitem>
        <seg>fuser, killall, peekfd, pstree, and pstree.x11 (link to pstree)</seg>
      </seglistitem>
    </segmentedlist>

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

      <varlistentry id="fuser">
        <term><command>fuser</command></term>
        <listitem>
          <para>Reports the Process IDs (PIDs) of processes that use the given
          files or file systems</para>
          <indexterm zone="ch-system-psmisc fuser">
            <primary sortas="b-fuser">fuser</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="killall">
        <term><command>killall</command></term>
        <listitem>
          <para>Kills processes by name; it sends a signal to all processes
          running any of the given commands</para>
          <indexterm zone="ch-system-psmisc killall">
            <primary sortas="b-killall">killall</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="peekfd">
        <term><command>peekfd</command></term>
        <listitem>
          <para>Peek at file descriptors of a running process, given its
          PID</para>
          <indexterm zone="ch-system-psmisc peekfd">
            <primary sortas="b-peekfd">peekfd</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pstree">
        <term><command>pstree</command></term>
        <listitem>
          <para>Displays running processes as a tree</para>
          <indexterm zone="ch-system-psmisc pstree">
            <primary sortas="b-pstree">pstree</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pstree.x11">
        <term><command>pstree.x11</command></term>
        <listitem>
          <para>Same as <command>pstree</command>, except that it waits for
          confirmation before exiting</para>
          <indexterm zone="ch-system-psmisc pstree.x11">
            <primary sortas="b-pstree.x11">pstree.x11</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>