lfs-book/chapter06/procps.xml

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<sect1 id="ch-system-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, and Ncurses</seg></seglistitem>
</segmentedlist>
</sect2>

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

<para>Compile the package:</para>

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

<para>Install the package:</para>

<screen><userinput>make install</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><bridgehead renderas="sect3">Short Descriptions</bridgehead>
<?dbfo list-presentation="list"?>

<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 free"><primary sortas="b-free">free</primary></indexterm>
</listitem>
</varlistentry>

<varlistentry id="kill">
<term><command>kill</command></term>
<listitem>
<para>Sends signals to processes</para>
<indexterm zone="ch-system-procps kill"><primary sortas="b-kill">kill</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 pgrep"><primary sortas="b-pgrep">pgrep</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 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 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 ps"><primary sortas="b-ps">ps</primary></indexterm>
</listitem>
</varlistentry>

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

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

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

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

</sect2>

</sect1>