Chapter 18. Recess Time
This bizarre little intermission gives the reader a chance to relax and maybe laugh a bit.
Fellow Linux user, greetings! You are reading something which will bring you luck and good fortune. Just e−mail a copy of this document to 10 of your friends. Before you make the copies, send a 100−line Bash script to the first person on the list given at the bottom of this letter. Then delete their name and add yours to the bottom of the list.
Don't break the chain! Make the copies within 48 hours. Wilfred P. of Brooklyn failed to send out his ten copies and woke the next morning to find his job description changed
to "COBOL programmer." Howard L. of Newport News sent out his ten copies and within a month had enough hardware to build a 100−node Beowulf cluster dedicated to playing xbill. Amelia V. of Chicago laughed at this letter and
broke the chain. Shortly thereafter, a fire broke out in her terminal and she now spends her days writing documentation for MS Windows.
Don't break the chain! Send out your ten copies today!
Courtesy 'NIX "fortune cookies", with some alterations and many apologies
Part 4. Advanced Topics
Table of Contents
19.Regular Expressions
19.1.A Brief Introduction to Regular Expressions
19.2.Globbing
20.Subshells
21.Restricted Shells
22.Process Substitution
23.Functions
23.1.Complex Functions and Function Complexities
23.2.Local Variables
24.Aliases
25.List Constructs
26.Arrays
27.Files
28./dev and /proc
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Advanced Bash−Scripting Guide
28.1./dev
28.2./proc
29.Of Zeros and Nulls
30.Debugging
31.Options
32.Gotchas
33.Scripting With Style
33.1.Unofficial Shell Scripting Stylesheet
34.Miscellany
34.1.Interactive and non−interactive shells and scripts
34.2.Shell Wrappers
34.3.Tests and Comparisons: Alternatives
34.4.Optimizations
34.5.Assorted Tips
34.6.Oddities
34.7.Portability Issues
34.8.Shell Scripting Under Windows
35.Bash, version 2
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