Advanced Bash−Scripting Guide

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Advanced Bash−Scripting Guide done echo −−− echo 'IFS unchanged, using "$@"' c=0 for i in "$@" do echo "$((c+=1)): [$i]" done echo −−− echo 'IFS unchanged, using $@' c=0 for i in $@ do echo "$((c+=1)): [$i]" done echo −−− IFS=: echo 'IFS=":", using "$*"' c=0 for i in "$*" do echo "$((c+=1)): [$i]" done echo −−− echo 'IFS=":", using $*' c=0 for i in $* do echo "$((c+=1)): [$i]" done echo −−− var=$* echo 'IFS=":", using "$var" (var=$*)' c=0 for i in "$var" do echo "$((c+=1)): [$i]" done echo −−− echo 'IFS=":", using $var (var=$*)' c=0 for i in $var do echo "$((c+=1)): [$i]" done echo −−− var="$*" echo 'IFS=":", using $var (var="$*")' c=0 for i in $var do echo "$((c+=1)): [$i]" done echo −−− echo 'IFS=":", using "$var" (var="$*")' c=0 for i in "$var" do echo "$((c+=1)): [$i]" done echo −−− Chapter 9. Variables Revisited 76
echo 'IFS=":", using "$@"' c=0 for i in "$@" do echo "$((c+=1)): [$i]" done echo −−− echo 'IFS=":", using $@' c=0 for i in $@ do echo "$((c+=1)): [$i]" done echo −−− var=$@ echo 'IFS=":", using $var (var=$@)' c=0 for i in $var do echo "$((c+=1)): [$i]" done echo −−− echo 'IFS=":", using "$var" (var=$@)' c=0 for i in "$var" do echo "$((c+=1)): [$i]" done echo −−− var="$@" echo 'IFS=":", using "$var" (var="$@")' c=0 for i in "$var" do echo "$((c+=1)): [$i]" done echo −−− echo 'IFS=":", using $var (var="$@")' c=0 for i in $var do echo "$((c+=1)): [$i]" done echo # Try this script with ksh or zsh −y. exit 0 Advanced Bash−Scripting Guide # This example script by Stephane Chazelas, # and slightly modified by the document author. The $@ and $* parameters differ only when between double quotes. Example 9−8. $* and $@ when $IFS is empty #!/bin/bash # If $IFS set, but empty, Chapter 9. Variables Revisited 77
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Advanced Bash−Scripting Guide An
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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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Advanced Bash−Scripting Guide Eac
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Chapter 3. Special Characters Speci
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Advanced Bash−Scripting Guide \ /
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Advanced Bash−Scripting Guide * ?
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Advanced Bash−Scripting Guide ech
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Advanced Bash−Scripting Guide ASC
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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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Page 37 and 38: The shift command reassigns the pos
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Page 45 and 46: true # the "true" builtin. echo "ex
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Page 51 and 52: if [[ −e $file ]] then echo "Pass
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Page 117 and 118: As is the case with for/in loops, p
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# May need to also press ENTER if a
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Advanced Bash−Scripting Guide exi
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Advanced Bash−Scripting Guide let
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Advanced Bash−Scripting Guide Exa
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Advanced Bash−Scripting Guide The
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Advanced Bash−Scripting Guide #!/
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Advanced Bash−Scripting Guide ret
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Advanced Bash−Scripting Guide Com
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Advanced Bash−Scripting Guide if
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Advanced Bash−Scripting Guide ena
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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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Advanced Bash−Scripting Guide Thi
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Advanced Bash−Scripting Guide gzi
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Advanced Bash−Scripting Guide # S
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Advanced Bash−Scripting Guide pre
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Advanced Bash−Scripting Guide che
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Advanced Bash−Scripting Guide No
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mailto Similar to the mail command,
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Advanced Bash−Scripting Guide int
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Advanced Bash−Scripting Guide cas
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Advanced Bash−Scripting Guide Mos
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Advanced Bash−Scripting Guide pst
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[ ${NETWORKING} = "no" ] && exit 0
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chroot Advanced Bash−Scripting Gu
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Advanced Bash−Scripting Guide bas
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Advanced Bash−Scripting Guide don
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Advanced Bash−Scripting Guide ' c
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Advanced Bash−Scripting Guide Not
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Chapter 15. Arithmetic Expansion Ar
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Advanced Bash−Scripting Guide # T
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# Saves stdin. Advanced Bash−Scri
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Advanced Bash−Scripting Guide 16.
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Chapter 17. Here Documents A here d
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Advanced Bash−Scripting Guide Fil
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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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Advanced Bash−Scripting Guide lit
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"Sed & Awk", by Dougherty and Robbi
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Chapter 20. Subshells Running a she
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Advanced Bash−Scripting Guide fi
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Advanced Bash−Scripting Guide f1
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# Range: 0 − 200 # It's crude, bu
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Advanced Bash−Scripting Guide alt
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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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Advanced Bash−Scripting Guide Cop
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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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Advanced Bash−Scripting Guide net
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Advanced Bash−Scripting Guide # A
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Chapter 30. Debugging The Bash shel
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4. Advanced Bash−Scripting Guide
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Advanced Bash−Scripting Guide whi
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Chapter 31. Options Options are set
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Chapter 32. Gotchas Turandot: Gli e
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command1 2> − | command2 # Trying
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echo "one two three" | read a b c #
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Chapter 33. Scripting With Style Ge
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Advanced Bash−Scripting Guide See
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Advanced Bash−Scripting Guide # i
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Advanced Bash−Scripting Guide # T
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Advanced Bash−Scripting Guide tpu
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#!/bin/bash # color−echo.sh: Echo
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34.7. Assorted Tips Advanced Bash
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Advanced Bash−Scripting Guide the
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Advanced Bash−Scripting Guide •
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# agram.sh: Playing games with anag
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Chapter 35. Bash, version 2 The cur
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Advanced Bash−Scripting Guide # R
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1−56592−580−7). This is the s
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Bibliography Edited by Peter Dennin
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Advanced Bash−Scripting Guide * A
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Mark Komarinski's Printing−Usage
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Advanced Bash−Scripting Guide #+
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Advanced Bash−Scripting Guide pad
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let "row = $r" # Count center row o
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next_gen "$Cur" let "generation +=
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[−c localdirectory] [−m filepat
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Advanced Bash−Scripting Guide # =
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Advanced Bash−Scripting Guide } z
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Advanced Bash−Scripting Guide } e
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Advanced Bash−Scripting Guide #:d
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# ListDirectory "FileGlob" "Field
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Advanced Bash−Scripting Guide # I
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The md5sum program is documented as
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Note: 'mount −l' does return the
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Advanced Bash−Scripting Guide dec
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Appendix B. A Sed and Awk Micro−P
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Advanced Bash−Scripting Guide /GU
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Advanced Bash−Scripting Guide Tha
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Appendix D. A Detailed Introduction
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Appendix E. Localization Localizati
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Appendix F. History Commands The Ba
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Advanced Bash−Scripting Guide } X
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Advanced Bash−Scripting Guide pow
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Advanced Bash−Scripting Guide *)
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Advanced Bash−Scripting Guide com
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Appendix H. Converting DOS Batch Fi
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Advanced Bash−Scripting Guide XCO
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Appendix I. Exercises I.1. Analyzin
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Lottery Numbers One type of lottery
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Advanced Bash−Scripting Guide Usi
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Advanced Bash−Scripting Guide and
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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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