Advanced Bash−Scripting Guide

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Advanced Bash−Scripting Guide Ben Okopnik's well−written introductory Bash scripting articles in issues 53, 54, 55, 57, and 59 of the Linux Gazette , and his explanation of "The Deep, Dark Secrets of Bash" in issue 56. Chet Ramey's bash − The GNU Shell, a two−part series published in issues 3 and 4 of the Linux Journal, July−August 1994. Mike G's Bash−Programming−Intro HOWTO. Richard's UNIX Scripting Universe. Chet Ramey's Bash F.A.Q. Ed Schaefer's Shell Corner in Unix Review. Example shell scripts at Lucc's Shell Scripts . Example shell scripts at SHELLdorado . Example shell scripts at Noah Friedman's script site. Steve Parker's Shell Programming Stuff. Example shell scripts at SourceForge Snippet Library − shell scrips. Giles Orr's Bash−Prompt HOWTO. Very nice sed, awk, and regular expression tutorials at The UNIX Grymoire. Eric Pement's sed resources page. The GNU gawk reference manual (gawk is the extended GNU version of awk available on Linux and BSD systems). Trent Fisher's groff tutorial. Bibliography 366
Mark Komarinski's Printing−Usage HOWTO. Advanced Bash−Scripting Guide There is some nice material on I/O redirection in chapter 10 of the textutils documentation at the University of Alberta site. Rick Hohensee has written the osimpa i386 assembler entirely as Bash scripts. Rocky Bernstein is in the process of developing a "full−fledged" debugger for Bash. −−− The excellent "Bash Reference Manual", by Chet Ramey and Brian Fox, distributed as part of the "bash−2−doc" package (available as an rpm). See especially the instructive example scripts in this package. The comp.os.unix.shell newsgroup. The manpages for bash and bash2, date, expect, expr, find, grep, gzip, ln, patch, tar, tr, bc, xargs. The texinfo documentation on bash, dd, m4, gawk, and sed. Bibliography 367
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Chapter 1. Why Shell Programming? A
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Chapter 2. Starting Off With a Sha
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Chapter 3. Special Characters Speci
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# Sometimes, though, you get: # 11
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The "−" can be used to pipe stdou
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change the behavior of the terminal
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Chapter 4. Introduction to Variable
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The shift command reassigns the pos
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Example 5−1. Echoing Weird Variab
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(cd /source/directory && tar cf −
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true # the "true" builtin. echo "ex
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if [[ −e $file ]] then echo "Pass
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Advanced Bash−Scripting Guide −
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7.3. Comparison operators (binary)
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Example 7−5. arithmetic and strin
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Chapter 8. Operations and Related T
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Part 3. Beyond the Basics Table of
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$EDITOR the default editor invoked
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Example 9−2. Timed Input Advanced
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echo 'IFS=":", using "$@"' c=0 for
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echo '${var1#$pattern1} =' "${var1#
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t=${path_name%/*.*} # Same effect a
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Chapter 10. Loops and Branches Oper
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Advanced Bash−Scripting Guide OUT
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As is the case with for/in loops, p
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This construct tests for a conditio
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Advanced Bash−Scripting Guide ###
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# Accept upper or lowercase input.
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# May need to also press ENTER if a
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cat, tac # Burn the CDR. cdrecord
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Advanced Bash−Scripting Guide 12.
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exit $E_CHANGED_MIND ;; *) echo "De
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The multiplication operator must be
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echo Number of digits at the beginn
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Outputs very verbose timing statist
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This line occurs three times. This
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# List all the users in /etc/passwd
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Advanced Bash−Scripting Guide # r
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Advanced Bash−Scripting Guide gre
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The −d option deletes a range of
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# Delete CR and write to new file.
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mailto Similar to the mail command,
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[ ${NETWORKING} = "no" ] && exit 0
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chroot Advanced Bash−Scripting Gu
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Chapter 15. Arithmetic Expansion Ar
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# Saves stdin. Advanced Bash−Scri
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Chapter 17. Here Documents A here d
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Example 17−11. A self−documenti
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Part 4. Advanced Topics At this poi
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"Sed & Awk", by Dougherty and Robbi
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Chapter 20. Subshells Running a she
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# Range: 0 − 200 # It's crude, bu
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# grep PATTERN /etc/passwd | awk
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Advanced Bash−Scripting Guide # Y
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Chapter 25. List Constructs The "an
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# AND LIST executes on true, OR LIS
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echo ${colors[$index]} let "index =
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# Replace all matching wildcarded s
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fi let "t += $i " Primes[t]=$NON_PR
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Advanced Bash−Scripting Guide # =
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# −−−−−−−−− # 1)
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Chapter 28. /dev and /proc A Linux
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Page 413 and 414: Appendix B. A Sed and Awk Micro−P
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Page 419 and 420: Appendix D. A Detailed Introduction
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Appendix F. History Commands The Ba
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Appendix H. Converting DOS Batch Fi
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Appendix I. Exercises I.1. Analyzin
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Lottery Numbers One type of lottery
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[33] This is actually a script adap
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# Thanks to Stephane Chazelas for p
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