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<!DOCTYPE HTML>
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<title>sh | Introduction</title>
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Introduction
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<b>1.</b>
Bug reports
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<b>2.</b>
Basics
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<b>2.1.</b>
Quotes
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Escape Sequences
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<b>2.2.</b>
Variables
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<b>2.3.</b>
Functions
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<b>2.4.</b>
Exit Status
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<b>2.5.</b>
Pattern Matching
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<b>2.6.</b>
#!
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<b>2.7.</b>
Interactive vs Non-Interactive Shell
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<b>2.8.</b>
Login vs Non-Login Shell
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<b>2.9.</b>
etc
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<b>3.</b>
Test
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<b>3.1.</b>
Operators
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<b>4.</b>
Subshells
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<b>4.1.</b>
Process Creation
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<b>5.</b>
Commands
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<b>5.1.</b>
Builtin Commands
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<b>5.1.1.</b>
read
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<b>5.1.2.</b>
printf
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<b>5.1.3.</b>
eval
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<b>5.1.4.</b>
getopts
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<b>5.2.</b>
Keyword Commands
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<b>5.2.1.</b>
Compound Commands
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<b>5.3.</b>
Special Commands
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<b>5.4.</b>
expr
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<b>5.5.</b>
grep
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<b>5.6.</b>
find
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<b>6.</b>
Arrays
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<b>7.</b>
Shell Metacharacters
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<b>7.1.</b>
Precedence
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<b>8.</b>
Expansions and Substitutions
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<b>8.1.</b>
Brace Expansion
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<b>8.2.</b>
Tilde Expansion
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<b>8.3.</b>
Parameter Expansion
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<b>8.4.</b>
Arithmetic Expansion
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<b>8.5.</b>
Command Substitution
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<b>8.6.</b>
Process Substitution
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<b>8.7.</b>
Word Splitting
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<li class="chapter " data-level="8.8" data-path="exp_and_sub/filename_expansion.html">
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<b>8.8.</b>
Filename Expansion
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<b>9.</b>
Job Control
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<b>9.1.</b>
Session and Process Group
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<b>9.2.</b>
Process State Codes
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<b>9.3.</b>
TTY
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<b>9.4.</b>
Mutual Exclusion
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<b>10.</b>
Redirections
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<b>10.1.</b>
File Descriptors
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<b>10.2.</b>
<< , <<<
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<b>10.3.</b>
Pipe
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<b>10.4.</b>
Named Pipe
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<b>10.5.</b>
Buffering
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<b>11.</b>
Signals and Traps
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<ul class="articles">
<li class="chapter " data-level="11.1" data-path="kill.html">
<a href="./kill.html">
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<b>11.1.</b>
kill
</a>
</li>
<li class="chapter " data-level="11.2" data-path="trap.html">
<a href="./trap.html">
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<b>11.2.</b>
trap
</a>
</li>
<li class="chapter " data-level="11.3" data-path="signals_table.html">
<a href="./signals_table.html">
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<b>11.3.</b>
Signals Table
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="12" data-path="command_aliases.html">
<a href="./command_aliases.html">
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