394 lines
5.2 KiB
HTML
394 lines
5.2 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML
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><HEAD
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><TITLE
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>The Bash environment</TITLE
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NAME="GENERATOR"
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TITLE="Exercises"
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TITLE="Shell initialization files"
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HREF="sect_03_01.html"></HEAD
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><TR
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>Bash Guide for Beginners</TH
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WIDTH="10%"
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>Prev</A
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WIDTH="100%"></DIV
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><DIV
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CLASS="chapter"
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><H1
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><A
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NAME="chap_03"
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></A
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>Chapter 3. The Bash environment</H1
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><DIV
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CLASS="TOC"
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><DL
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><DT
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><B
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>Table of Contents</B
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></DT
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><DT
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>3.1. <A
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HREF="sect_03_01.html"
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>Shell initialization files</A
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></DT
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><DD
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><DL
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><DT
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>3.1.1. <A
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HREF="sect_03_01.html#sect_03_01_01"
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>System-wide configuration files</A
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></DT
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><DT
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>3.1.2. <A
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HREF="sect_03_01.html#sect_03_01_02"
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>Individual user configuration files</A
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></DT
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><DT
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>3.1.3. <A
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HREF="sect_03_01.html#sect_03_01_03"
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>Changing shell configuration files</A
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></DT
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></DL
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></DD
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><DT
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>3.2. <A
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HREF="sect_03_02.html"
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>Variables</A
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></DT
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><DD
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><DL
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><DT
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>3.2.1. <A
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HREF="sect_03_02.html#sect_03_02_01"
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>Types of variables</A
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></DT
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><DT
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>3.2.2. <A
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HREF="sect_03_02.html#sect_03_02_02"
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>Creating variables</A
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></DT
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><DT
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>3.2.3. <A
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HREF="sect_03_02.html#sect_03_02_03"
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>Exporting variables</A
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></DT
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><DT
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>3.2.4. <A
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HREF="sect_03_02.html#sect_03_02_04"
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>Reserved variables</A
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></DT
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><DT
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>3.2.5. <A
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HREF="sect_03_02.html#sect_03_02_05"
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>Special parameters</A
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></DT
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><DT
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>3.2.6. <A
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HREF="sect_03_02.html#sect_03_02_06"
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>Script recycling with variables</A
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></DT
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></DL
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></DD
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><DT
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>3.3. <A
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HREF="sect_03_03.html"
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>Quoting characters</A
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></DT
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><DD
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><DL
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><DT
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>3.3.1. <A
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HREF="sect_03_03.html#sect_03_03_01"
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>Why?</A
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></DT
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><DT
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>3.3.2. <A
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HREF="sect_03_03.html#sect_03_03_02"
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>Escape characters</A
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></DT
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><DT
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>3.3.3. <A
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HREF="sect_03_03.html#sect_03_03_03"
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>Single quotes</A
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></DT
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><DT
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>3.3.4. <A
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HREF="sect_03_03.html#sect_03_03_04"
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>Double quotes</A
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></DT
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><DT
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>3.3.5. <A
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HREF="sect_03_03.html#sect_03_03_05"
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>ANSI-C quoting</A
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></DT
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><DT
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>3.3.6. <A
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HREF="sect_03_03.html#sect_03_03_06"
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>Locales</A
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></DT
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></DL
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></DD
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><DT
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>3.4. <A
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HREF="sect_03_04.html"
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>Shell expansion</A
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></DT
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><DD
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><DL
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><DT
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>3.4.1. <A
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HREF="sect_03_04.html#sect_03_04_0"
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>General</A
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></DT
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><DT
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>3.4.2. <A
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HREF="sect_03_04.html#sect_03_04_01"
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>Brace expansion</A
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></DT
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><DT
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>3.4.3. <A
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HREF="sect_03_04.html#sect_03_04_02"
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>Tilde expansion</A
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></DT
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><DT
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>3.4.4. <A
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HREF="sect_03_04.html#sect_03_04_03"
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>Shell parameter and variable expansion</A
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></DT
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><DT
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>3.4.5. <A
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HREF="sect_03_04.html#sect_03_04_04"
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>Command substitution</A
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></DT
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><DT
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>3.4.6. <A
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HREF="sect_03_04.html#sect_03_04_05"
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>Arithmetic expansion</A
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></DT
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><DT
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>3.4.7. <A
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HREF="sect_03_04.html#sect_03_04_06"
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>Process substitution</A
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></DT
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><DT
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>3.4.8. <A
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HREF="sect_03_04.html#sect_03_04_07"
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>Word splitting</A
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></DT
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><DT
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>3.4.9. <A
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HREF="sect_03_04.html#sect_03_04_08"
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>File name expansion</A
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></DT
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></DL
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></DD
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><DT
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>3.5. <A
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HREF="sect_03_05.html"
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>Aliases</A
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></DT
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><DD
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><DL
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><DT
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>3.5.1. <A
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HREF="sect_03_05.html#sect_03_05_01"
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>What are aliases?</A
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></DT
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><DT
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>3.5.2. <A
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HREF="sect_03_05.html#sect_03_05_02"
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>Creating and removing aliases</A
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></DT
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></DL
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></DD
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><DT
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>3.6. <A
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HREF="sect_03_06.html"
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>More Bash options</A
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></DT
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><DD
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><DL
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><DT
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>3.6.1. <A
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HREF="sect_03_06.html#sect_03_06_01"
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>Displaying options</A
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></DT
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><DT
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>3.6.2. <A
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HREF="sect_03_06.html#sect_03_06_02"
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>Changing options</A
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></DT
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></DL
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></DD
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><DT
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>3.7. <A
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HREF="sect_03_07.html"
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>Summary</A
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></DT
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><DT
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>3.8. <A
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HREF="sect_03_08.html"
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>Exercises</A
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></DT
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></DL
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></DIV
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><BLOCKQUOTE
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CLASS="ABSTRACT"
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><DIV
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CLASS="abstract"
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><A
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NAME="AEN1676"
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></A
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><P
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></P
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><P
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>In this chapter we will discuss the various ways in which the Bash environment can be influenced:</P
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><P
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><P
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></P
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><UL
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><LI
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><P
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>Editing shell initialization files</P
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></LI
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><LI
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><P
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>Using variables</P
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></LI
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><LI
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><P
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>Using different quote styles</P
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></LI
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><LI
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><P
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>Perform arithmetic calculations</P
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></LI
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><LI
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><P
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>Assigning aliases</P
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></LI
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><LI
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><P
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>Using expansion and substitution</P
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></LI
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></UL
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></P
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><P
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></P
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></DIV
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></BLOCKQUOTE
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></DIV
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CLASS="NAVFOOTER"
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