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Index: O
- .o filename extension
: UNIX Power Tools, 1.17. Filename Extensions 
- oawk scripting language
: (see awk scripting language)
- obase command
: UNIX Power Tools, 49.2. bc: Hexadecimal or Binary Conversion 
- object files
    
  - file extension
: UNIX Power Tools, 1.17. Filename Extensions 
  
- generating
: UNIX in a Nutshell, Chapter 2, Reference: as
  
- removing information from
: UNIX in a Nutshell, Chapter 2, Reference: strip
   
- object-code libraries
: Learning the Korn Shell, 6.1.3.1. More About C Compilers
- obsolete features in next ksh release
: Learning the Korn Shell, A.7. The Future of the Korn Shell
- obtaining source code
   
  - awk
  
 
    - sed & awk, Availability of sed and awk
    
- sed & awk, 11.3.1. MKS awk
    
- sed & awk, 11.3.2. Thompson Automation awk (tawk)
    
- sed & awk, 11.3.3. Videosoft VSAwk
  
    
  - examples
  
 
    - sed & awk, Sample Programs
    
- sed & awk, Obtaining Example Source Code
  
  
  - gawk
: sed & awk, 11.2.3. GNU awk (gawk)
  
- mawk
: sed & awk, 11.2.4. Michael's awk (mawk)
  
- sed
: sed & awk, Availability of sed and awk
   
- ocrnl flag
: UNIX Power Tools, 41.2.1. How We Made It This Far (Back?) 
- octal dumps, producing
: UNIX in a Nutshell, Chapter 2, Reference: od
- octal numbers
   
  - UNIX Power Tools, 1.23. File Access Permissions 
  
- sed & awk, 7.6. Expressions
  
- for ASCII characters
  
   
    - UNIX Power Tools, 7.8. Highlighting in Shell Prompts 
    
- UNIX Power Tools, 51.3. ASCII Characters: Listing and Getting Values 
  
  
  - interpreting
: UNIX Power Tools, 45.35.1. With echo 
  
- for permissions
: UNIX Power Tools, 17.15. Searching for Files by Permission 
  
- od command
: UNIX in a Nutshell, Chapter 2, Reference: od
 
  - -c option
  
 
    - UNIX Power Tools, 18.2. What's Really in a Directory 
    
- UNIX Power Tools, 23.15. Using unlink to Remove a File with a Strange Name 
    
- UNIX Power Tools, 25.7. Show Non-Printing Characters with cat -v or od -c 
  
   
  - looking at characters
: UNIX Power Tools, 41.7. Reading Verrrry Long Lines from the Terminal 
 
- off-peak hours, taking advantage of
: UNIX Power Tools, 40.1. Off-Peak Job Submission 
- offset script
  
  - UNIX Power Tools, 35.7. offset: Indent Text 
  
- UNIX Power Tools, 52.4. Quick Descriptions of What's on the Disc 
  
- OFMT variable
 
  - sed & awk, 7.7. System Variables
  
- sed & awk, 7.9. Formatted Printing
  
- OFS variable
: sed & awk, 7.7. System Variables
- oldlinks script
  
  - UNIX Power Tools, 16.28. oldlinks: Find Unconnected Symbolic Links 
  
- UNIX Power Tools, 52.4. Quick Descriptions of What's on the Disc 
  
- OLDPWD variable
 
  - Learning the Korn Shell, 3.4.3.1. Miscellaneous Variables
  
- Learning the Korn Shell, 4.5. Advanced Examples: pushd and popd
  
- Learning the Korn Shell, 5.1.1. Exit Status and Return
  
- Learning the Korn Shell, 7.3. Command-line Processing
  
- UNIX in a Nutshell, 4.3.2. Built-in Shell Variables
     
- olid hardware
: UNIX Power Tools, 20.6. Writing a Tape Drive on a Remote Machine 
- on-line manual
: (see man pages)
- onintr command (csh)
: UNIX in a Nutshell, Chapter 5, Reference: onintr
- online archive, software
: UNIX Power Tools, 52.7.2. Online Archive 
- online documentation
: (see manual pages)
- online manual source file extension
: UNIX Power Tools, 1.17. Filename Extensions 
- open command (ex)
: UNIX in a Nutshell, Chapter 9, Reference: open
- OPEN LOOK
: Learning the Korn Shell, A.3. wksh
- open mode
: (see ex editor, open mode)
- opening a file (vi)
          
  - Learning the vi Editor, 1.1. Opening and Closing Files
  
- Learning the vi Editor, 1.1.1. Opening a File
  
- Learning the vi Editor, 1.1.2. Problems Opening Files
   
- openwin command
: UNIX in a Nutshell, Chapter 2, Reference: openwin
- OpenWindows
  
  - configuring
: UNIX in a Nutshell, Chapter 2, Reference: openwin
  
- programs and utilities
: UNIX in a Nutshell, Chapter 2, Reference: openwin
  
- operating system, definition of
: Learning the UNIX Operating System, The UNIX Operating System
- operators
  
  - arithmetic
: (see arithmetic operators)
  
- assignment
: (see assignment operators)
  
- awk
: (see awk scripting language)
  
- bitwise/logical
  
    
    - UNIX Power Tools, 45.28. Quick Reference: expr 
    
- UNIX Power Tools, 47.4.3.3. Bitwise and Logical Operators 
  
  
  - Boolean
  
 
    - sed & awk, 7.8. Relational and Boolean Operators
    
- sed & awk, 11.1.4. Variables as Boolean Patterns
  
  
  - C shell
: UNIX in a Nutshell, 5.4.1. Operators
  
- comparison
: UNIX Power Tools, 47.4.3.4. Comparison Operators 
  
- file inquiry
: UNIX Power Tools, 47.4.3.5. File Inquiry Operators 
  
- postfix versus prefix
: sed & awk, 7.6. Expressions
  
- precedence in C shell
: UNIX Power Tools, 47.4.2. Expressions 
  
- relational
  
      
    - UNIX Power Tools, 45.28. Quick Reference: expr 
    
- sed & awk, 7.8. Relational and Boolean Operators
  
  
  - string editing
: UNIX Power Tools, 45.12. Parameter Substitution 
  
- unmatched
: UNIX Power Tools, 46.1.2. Unmatched Operators 
  
- opost flag
: UNIX Power Tools, 41.2.1. How We Made It This Far (Back?) 
- OPTARG variable
: Learning the Korn Shell, 6.1.3. getopts
- OPTARGET shell variable
: UNIX in a Nutshell, 4.3.2. Built-in Shell Variables
- OPTIND
    
  - Learning the Korn Shell, 6.1.3. getopts
  
- UNIX in a Nutshell, 4.3.2. Built-in Shell Variables
  
- options
 
  - Learning the Korn Shell, 3. Customizing Your Environment
  
- Learning the Korn Shell, 3.3. Options
  
- sed & awk, 2.2. Command-Line Syntax
  
- sed & awk, 2.3.1. Specifying Simple Instructions
  
- (see also under specific option)
  
- awk
: sed & awk, 2.4.3. Summary of Options
  
- bgnice
  
       
    - Learning the Korn Shell, 3.3. Options
    
- Learning the Korn Shell, 8.5.2. Advantages and Disadvantages of Coroutines
    
- Learning the Korn Shell, A.6. Workalikes on PC Platforms
  
   
  - combining
: sed & awk, 2.3.2.3. Mixing options (POSIX)
  
- command-line
: (see command-line options)
  
- dash
: (see command-line options)
  
- emacs
  
    
    - Learning the Korn Shell, 2.1. Enabling Command-line Editing
    
- Learning the Korn Shell, 3.3. Options
  
  
  - ignoreeof
: Learning the Korn Shell, 3.3. Options
  
- keyword
: Learning the Korn Shell, 3.5.1. Environment Variables
  
  
    - obsolescence in next ksh release
: Learning the Korn Shell, A.7. The Future of the Korn Shell
  
 
  - list of
: Learning the Korn Shell, B.1. Invocation Options
  
 
    - set -o
: Learning the Korn Shell, B.5. Options
    
- typeset
: Learning the Korn Shell, B.6. Typeset Options
  
  
  - list of those not supported in pdksh
: Learning the Korn Shell, A.4. pdksh
  
- markdirs
: Learning the Korn Shell, 3.3. Options
  
- monitor
  
   
    - Learning the Korn Shell, 8.2. Job Control
    
- Learning the Korn Shell, A.6. Workalikes on PC Platforms
  
  
  - in next ksh release
: Learning the Korn Shell, A.7. The Future of the Korn Shell
  
- noclobber
  
  
    - Learning the Korn Shell, 3.3. Options
    
- Learning the Korn Shell, 7.1. I/O Redirectors
    
- Learning the Korn Shell, 10.2.3. Types of Global Customization
    
- Learning the UNIX Operating System, 5.1.1.1. The > operator
    
- UNIX Power Tools, 6.8. Shell Variables 
    
- UNIX Power Tools, 6.9. Special C Shell Variables 
    
- UNIX Power Tools, 13.6. Safe I/O Redirection with noclobber 
    
- UNIX Power Tools, 23.7. Safer File Deletion in Some Directories 
    
- UNIX in a Nutshell, 5.3.3. Predefined Shell Variables
  
         
  - noexec
: Learning the Korn Shell, 9.1.1. Set Options
  
 
    - turning on and off
: Learning the Korn Shell, 9.1.1. Set Options
  
 
  - noglob
: Learning the Korn Shell, 3.3. Options
  
- privileged
  
  
    - Learning the Korn Shell, 10.3.4. Privileged Mode
    
- Learning the Korn Shell, A.6. Workalikes on PC Platforms
  
  
  - sed
: sed & awk, 2.3.2.4. Summary of options
  
- trackall
  
  
    - Learning the Korn Shell, 3.3. Options
    
- Learning the Korn Shell, 10.2.3. Types of Global Customization
    
- obsolescence in next ksh release
: Learning the Korn Shell, A.7. The Future of the Korn Shell
  
   
  - turning on and off
  
 
    - Learning the Korn Shell, 3.3. Options
    
- Learning the Korn Shell, 9.1.1. Set Options
  
  
  - verbose
: Learning the Korn Shell, 9.1.1. Set Options
  
- vi
  
  
    - Learning the Korn Shell, 2.1. Enabling Command-line Editing
    
- Learning the Korn Shell, 3.3. Options
  
  
  - xtrace
: Learning the Korn Shell, 9.1.1. Set Options
 
- opttest script
: UNIX Power Tools, 52.4. Quick Descriptions of What's on the Disc 
- OR (||) operator
: sed & awk, 7.8. Relational and Boolean Operators
- order of operations
: sed & awk, 3.1. That's an Expression
   
  - commands in scripts
: sed & awk, 4.1. Applying Commands in a Script
 
- orphans
: (see processes, in pathological states)
- ORS variable
  
  - sed & awk, 7.7. System Variables
  
- sed & awk, 7.7.1. Working with Multiline Records
  
- OS/2
: Learning the Korn Shell, A.6. Workalikes on PC Platforms
 
  - Version 2
: Learning the Korn Shell, 8. Process Handling
 
- OSF/Motif
: Learning the Korn Shell, A.3. wksh
- other shells
: (see entries for individual shells)
- out of band approach for flow control
: UNIX Power Tools, 41.2.4. Flow Control (We Hope) 
- output
: (see I/O)
- output, redirecting
: (see >; redirection)
- overwrite mode
: UNIX Power Tools, 32.5. Putting Emacs in Overwrite Mode 
- overwriting files
       
  - Learning the UNIX Operating System, 5.1.1.1. The > operator
  
- UNIX Power Tools, 8.4. Command Evaluation and Accidentally Overwriting Files
  
- ownership, file
 
  - Learning the UNIX Operating System, 3.1.8.1. ls
  
- UNIX Power Tools, 22.2.1. User, Group, and World 
  
- UNIX Power Tools, 22.3. Who Will Own a New File? 
  
- BSD UNIX and
: UNIX Power Tools, 22.20. Why Can't You Change File Ownership Under BSD UNIX?
  
- changing
  
     
    - UNIX Power Tools, 22.21. How to Change File Ownership Without chown
    
- UNIX in a Nutshell, Chapter 2, Reference: chgrp
    
- UNIX in a Nutshell, Chapter 2, Reference: chown
  
   
  - group
: (see groups)
  
- searching by
: UNIX Power Tools, 17.16. Searching by Owner and Group 
  
Symbols
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 O'Reilly & Associates, Inc.
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