Advanced Bash−Scripting Guide

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Advanced Bash−Scripting Guide This option will not work on magnetic tape devices. 4. −r append (files to existing archive) 5. −A append (tar files to existing archive) 6. −t list (contents of existing archive) 7. −u update archive 8. −d compare archive with specified filesystem 9. −z gzip the archive (compress or uncompress, depending on whether combined with the −c or −x) option 10. −j bzip2 the archive shar ar rpm It may be difficult to recover data from a corrupted gzipped tar archive. When archiving important files, make multiple backups. Shell archiving utility. The files in a shell archive are concatenated without compression, and the resultant archive is essentially a shell script, complete with #!/bin/sh header, and containing all the necessary unarchiving commands. Shar archives still show up in Internet newsgroups, but otherwise shar has been pretty well replaced by tar/gzip. The unshar command unpacks shar archives. Creation and manipulation utility for archives, mainly used for binary object file libraries. The Red Hat Package Manager, or rpm utility provides a wrapper for source or binary archives. It includes commands for installing and checking the integrity of packages, among other things. A simple rpm −i package_name.rpm usually suffices to install a package, though there are many more options available. An rpm −qa gives a complete list of all installed rpm packages on a given system. An rpm −qa package_name lists only the package(s) corresponding to package_name. bash$ rpm −qa redhat−logos−1.1.3−1 glibc−2.2.4−13 cracklib−2.7−12 dosfstools−2.7−1 gdbm−1.8.0−10 ksymoops−2.4.1−1 mktemp−1.5−11 perl−5.6.0−17 reiserfs−utils−3.x.0j−2 ... bash$ rpm −qa docbook−utils docbook−utils−0.6.9−2 bash$ rpm −qa docbook | grep docbook docbook−dtd31−sgml−1.0−10 docbook−style−dsssl−1.64−3 docbook−dtd30−sgml−1.0−10 docbook−dtd40−sgml−1.0−11 docbook−utils−pdf−0.6.9−2 Chapter 12. External Filters, Programs and Commands 177
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Advanced Bash−Scripting Guide An
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Advanced Bash−Scripting Guide Tab
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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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Advanced Bash−Scripting Guide Exa
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Advanced Bash−Scripting Guide MIN
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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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Advanced Bash−Scripting Guide Thi
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Advanced Bash−Scripting Guide if
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if [[ −e $file ]] then echo "Pass
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Advanced Bash−Scripting Guide −
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7.3. Comparison operators (binary)
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Example 7−5. arithmetic and strin
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Chapter 8. Operations and Related T
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Advanced Bash−Scripting Guide ! ^
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Advanced Bash−Scripting Guide let
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Part 3. Beyond the Basics Table of
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$EDITOR the default editor invoked
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Advanced Bash−Scripting Guide (Th
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Advanced Bash−Scripting Guide #!/
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Example 9−2. Timed Input Advanced
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Advanced Bash−Scripting Guide fi
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echo 'IFS=":", using "$@"' c=0 for
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Advanced Bash−Scripting Guide #+
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Advanced Bash−Scripting Guide use
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echo '${var1#$pattern1} =' "${var1#
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t=${path_name%/*.*} # Same effect a
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Advanced Bash−Scripting Guide The
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Advanced Bash−Scripting Guide exi
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Advanced Bash−Scripting Guide thr
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Advanced Bash−Scripting Guide cou
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Chapter 10. Loops and Branches Oper
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Advanced Bash−Scripting Guide # T
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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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Advanced Bash−Scripting Guide don
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# Accept upper or lowercase input.
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Page 155 and 156: cat, tac # Burn the CDR. cdrecord
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Page 159 and 160: exit $E_CHANGED_MIND ;; *) echo "De
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Page 192 and 193: # cmp −s $1 $2 has same result ("
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Page 202 and 203: 12.8. Math Commands "Doing the numb
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Page 216 and 217: # blotout.sh: Erase all traces of a
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Advanced Bash−Scripting Guide Fil
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Backup This is a sort of advanced v
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Advanced Bash−Scripting Guide wat
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Chapter 14. Command Substitution Co
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Advanced Bash−Scripting Guide # T
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Advanced Bash−Scripting Guide bas
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Chapter 16. I/O Redirection There a
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Advanced Bash−Scripting Guide Mul
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Advanced Bash−Scripting Guide # t
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Advanced Bash−Scripting Guide cat
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Chapter 18. Recess Time This bizarr
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Chapter 19. Regular Expressions To
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Advanced Bash−Scripting Guide Cha
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Advanced Bash−Scripting Guide Dir
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Chapter 21. Restricted Shells Disab
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Chapter 22. Process Substitution Pr
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Chapter 23. Functions Like "real" p
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Advanced Bash−Scripting Guide # S
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Advanced Bash−Scripting Guide the
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{ local loc_var=23 # Declared local
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Chapter 24. Aliases A Bash alias is
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drwxr−xr−x 40 bozo bozo 2048 Fe
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Chapter 26. Arrays Newer versions o
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Advanced Bash−Scripting Guide Att
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echo "Elements in array2: ${array2[
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Advanced Bash−Scripting Guide # Y
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Advanced Bash−Scripting Guide Arr
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Advanced Bash−Scripting Guide # Q
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Advanced Bash−Scripting Guide fil
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Chapter 27. Files startup files The
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Advanced Bash−Scripting Guide the
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Chapter 29. Of Zeros and Nulls /dev
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Advanced Bash−Scripting Guide Ano
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Example 30−3. test24, another bug
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Advanced Bash−Scripting Guide fir
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The DEBUG argument to trap causes a
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It is also possible to enable scrip
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Advanced Bash−Scripting Guide Dan
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Advanced Bash−Scripting Guide nam
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Chapter 34. Miscellany Nobody reall
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# The 'd' is the delete command. #
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echo "However, the script may also
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# 2) Add options for colored backgr
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Advanced Bash−Scripting Guide msg
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The 0 − 255 range for function re
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Advanced Bash−Scripting Guide 34.
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{ Cards=(2 3 4 5 6 7 8 9 10 J Q K A
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Chapter 36. Endnotes 36.1. Author's
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Advanced Bash−Scripting Guide Hyu
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Advanced Bash−Scripting Guide Dav
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Advanced Bash−Scripting Guide Ben
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Appendix A. Contributed Scripts The
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Advanced Bash−Scripting Guide ADJ
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Advanced Bash−Scripting Guide day
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# # The above command substitution
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Advanced Bash−Scripting Guide # 4
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Advanced Bash−Scripting Guide # l
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Advanced Bash−Scripting Guide # =
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Advanced Bash−Scripting Guide for
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Advanced Bash−Scripting Guide # C
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Advanced Bash−Scripting Guide #:d
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echo "Testing \"strlen\" function:"
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Advanced Bash−Scripting Guide 'T'
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Advanced Bash−Scripting Guide ino
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Advanced Bash−Scripting Guide # A
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Advanced Bash−Scripting Guide 1)
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person.new self Bozeman Bozo 101272
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Advanced Bash−Scripting Guide add
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For a more extensive treatment of s
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Appendix C. Exit Codes With Special
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Advanced Bash−Scripting Guide lso
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Appendix G. A Sample .bashrc File T
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BLUE='\e[1;34m' cyan='\e[0;36m' CYA
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Advanced Bash−Scripting Guide ali
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Advanced Bash−Scripting Guide } r
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Advanced Bash−Scripting Guide *)
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# completion routine Advanced Bash
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Advanced Bash−Scripting Guide SHI
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Advanced Bash−Scripting Guide # G
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Analyze Example A−11, and reorgan
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Advanced Bash−Scripting Guide Jon
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Advanced Bash−Scripting Guide Imp
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Appendix J. Copyright The "Advanced
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Advanced Bash−Scripting Guide lin
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Advanced Bash−Scripting Guide [70
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