lfs-book/chapter06/procps.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../general.ent">
  %general-entities;
]>
<sect1 id="ch-system-procps" xreflabel="Procps" role="wrap">
<title>Procps-&procps-version;</title>
<?dbhtml filename="procps.html"?>

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

<sect2 role="package"><title/>
<para>The Procps package contains programs for monitoring processes.</para>

<segmentedlist>
<segtitle>&buildtime;</segtitle>
<segtitle>&diskspace;</segtitle>
<seglistitem><seg>0.1 SBU</seg><seg>6.2 MB</seg></seglistitem>
</segmentedlist>

<segmentedlist>
<segtitle>Procps installation depends on</segtitle>
<seglistitem><seg>Bash, Binutils, Coreutils, GCC, Glibc,
Make, Ncurses</seg></seglistitem>
</segmentedlist>
</sect2>

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

<para>Compile Procps:</para>

<screen><userinput>make</userinput></screen>

<para>Install it:</para>

<screen><userinput>make install</userinput></screen>

<para>Remove a spurious library link:</para>

<screen><userinput>rm /lib/libproc.so</userinput></screen>

</sect2>


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

<segmentedlist>
<segtitle>Installed programs</segtitle>
<segtitle>Installed library</segtitle>
<seglistitem><seg>free, kill, pgrep, pkill,
pmap, ps, skill, snice, sysctl, tload, top, uptime, vmstat, w and watch</seg>
<seg>libproc.so</seg></seglistitem>
</segmentedlist>

<variablelist><title>Short descriptions</title>

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

<varlistentry id="kill">
<term><command>kill</command></term>
<listitem>
<indexterm zone="ch-system-procps kill"><primary sortas="b-kill">kill</primary></indexterm>
<para>is used to send signals to processes.</para>
</listitem>
</varlistentry>

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

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

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

<varlistentry id="ps">
<term><command>ps</command></term>
<listitem>
<indexterm zone="ch-system-procps ps"><primary sortas="b-ps">ps</primary></indexterm>
<para>gives a snapshot of the current processes.</para>
</listitem>
</varlistentry>

<varlistentry id="skill">
<term><command>skill</command></term>
<listitem>
<indexterm zone="ch-system-procps skill"><primary sortas="b-skill">skill</primary></indexterm>
<para>sends signals to processes matching the given criteria.</para>
</listitem>
</varlistentry>

<varlistentry id="snice">
<term><command>snice</command></term>
<listitem>
<indexterm zone="ch-system-procps snice"><primary sortas="b-snice">snice</primary></indexterm>
<para>changes the scheduling priority of processes matching the given criteria.</para>
</listitem>
</varlistentry>

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

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

<varlistentry id="top">
<term><command>top</command></term>
<listitem>
<indexterm zone="ch-system-procps top"><primary sortas="b-top">top</primary></indexterm>
<para>displays the top CPU processes. It provides
an ongoing look at processor activity in real time.</para>
</listitem>
</varlistentry>

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

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

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

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

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

</sect2>

</sect1>