old-www/LDP/intro-linux/html/chap_04.html

381 lines
5.0 KiB
HTML

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML
><HEAD
><TITLE
>Processes</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
REL="HOME"
TITLE="Introduction to Linux"
HREF="index.html"><LINK
REL="PREVIOUS"
TITLE="Exercises"
HREF="sect_03_06.html"><LINK
REL="NEXT"
TITLE="Processes inside out"
HREF="sect_04_01.html"></HEAD
><BODY
CLASS="chapter"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>Introduction to Linux: </TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="sect_03_06.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="sect_04_01.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="chapter"
><H1
><A
NAME="chap_04"
></A
>Chapter 4. Processes</H1
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
>4.1. <A
HREF="sect_04_01.html"
>Processes inside out</A
></DT
><DD
><DL
><DT
>4.1.1. <A
HREF="sect_04_01.html#sect_04_01_01"
>Multi-user and multi-tasking</A
></DT
><DT
>4.1.2. <A
HREF="sect_04_01.html#sect_04_01_02"
>Process types</A
></DT
><DT
>4.1.3. <A
HREF="sect_04_01.html#sect_04_01_03"
>Process attributes</A
></DT
><DT
>4.1.4. <A
HREF="sect_04_01.html#sect_04_01_04"
>Displaying process information</A
></DT
><DT
>4.1.5. <A
HREF="sect_04_01.html#sect_04_01_05"
>Life and death of a process</A
></DT
><DT
>4.1.6. <A
HREF="sect_04_01.html#sect_04_01_06"
>SUID and SGID</A
></DT
></DL
></DD
><DT
>4.2. <A
HREF="sect_04_02.html"
>Boot process, Init and shutdown</A
></DT
><DD
><DL
><DT
>4.2.1. <A
HREF="sect_04_02.html#sect_04_02_01"
>Introduction</A
></DT
><DT
>4.2.2. <A
HREF="sect_04_02.html#sect_04_02_02"
>The boot process</A
></DT
><DT
>4.2.3. <A
HREF="sect_04_02.html#sect_04_02_03"
>GRUB features</A
></DT
><DT
>4.2.4. <A
HREF="sect_04_02.html#sect_04_02_04"
>Init</A
></DT
><DT
>4.2.5. <A
HREF="sect_04_02.html#sect_04_02_05"
>Init run levels</A
></DT
><DT
>4.2.6. <A
HREF="sect_04_02.html#sect_04_02_06"
>Shutdown</A
></DT
></DL
></DD
><DT
>4.3. <A
HREF="sect_04_03.html"
>Managing processes</A
></DT
><DD
><DL
><DT
>4.3.1. <A
HREF="sect_04_03.html#sect_04_03_01"
>Work for the system admin</A
></DT
><DT
>4.3.2. <A
HREF="sect_04_03.html#sect_04_03_02"
>How long does it take?</A
></DT
><DT
>4.3.3. <A
HREF="sect_04_03.html#sect_04_03_03"
>Performance</A
></DT
><DT
>4.3.4. <A
HREF="sect_04_03.html#sect_04_03_04"
>Load</A
></DT
><DT
>4.3.5. <A
HREF="sect_04_03.html#sect_04_03_05"
>Can I do anything as a user?</A
></DT
></DL
></DD
><DT
>4.4. <A
HREF="sect_04_04.html"
>Scheduling processes</A
></DT
><DD
><DL
><DT
>4.4.1. <A
HREF="sect_04_04.html#sect_04_04_01"
>Use that idle time!</A
></DT
><DT
>4.4.2. <A
HREF="sect_04_04.html#sect_04_04_02"
>The sleep command</A
></DT
><DT
>4.4.3. <A
HREF="sect_04_04.html#sect_04_04_03"
>The at command</A
></DT
><DT
>4.4.4. <A
HREF="sect_04_04.html#sect_04_04_04"
>Cron and crontab</A
></DT
></DL
></DD
><DT
>4.5. <A
HREF="sect_04_05.html"
>Summary</A
></DT
><DT
>4.6. <A
HREF="sect_04_06.html"
>Exercises</A
></DT
><DD
><DL
><DT
>4.6.1. <A
HREF="sect_04_06.html#AEN6058"
>General</A
></DT
><DT
>4.6.2. <A
HREF="sect_04_06.html#AEN6107"
>Booting, init etc.</A
></DT
><DT
>4.6.3. <A
HREF="sect_04_06.html#AEN6123"
>Scheduling</A
></DT
></DL
></DD
></DL
></DIV
><BLOCKQUOTE
CLASS="ABSTRACT"
><DIV
CLASS="abstract"
><A
NAME="AEN4610"
></A
><P
></P
><P
>Next to files, processes are the most important things on a UNIX/Linux system. In this chapter, we will take a closer look at those processes. We will learn more about:</P
><P
>&#13;<P
></P
><UL
><LI
><P
>Multi-user processing and multi-tasking</P
></LI
><LI
><P
>Process types</P
></LI
><LI
><P
>Controlling processes with different signals</P
></LI
><LI
><P
>Process attributes</P
></LI
><LI
><P
>The life cycle of a process</P
></LI
><LI
><P
>System startup and shutdown</P
></LI
><LI
><P
>SUID and SGID</P
></LI
><LI
><P
>System speed and response</P
></LI
><LI
><P
>Scheduling processes</P
></LI
><LI
><P
>The Vixie cron system</P
></LI
><LI
><P
>How to get the most out of your system</P
></LI
></UL
>
</P
><P
></P
></DIV
></BLOCKQUOTE
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="sect_03_06.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="sect_04_01.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Exercises</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
>&nbsp;</TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Processes inside out</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>