Symbols
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Index: O
- O (open line) command: Learning the vi Editor, 2.4. More Ways to Insert Text 
 
.o filename extension: UNIX Power Tools, 1.17. Filename Extensions 
-o option (elvis): Learning the vi Editor, 10.11. elvis Futures
-o option (vim): Learning the vi Editor, 11.2. Important Command-Line Arguments
oawk programming language: (see awk programming language)
obase command: UNIX Power Tools, 49.2. bc: Hexadecimal or Binary Conversion 
object file extension: UNIX Power Tools, 1.17. Filename Extensions 
object files: (see archives; files)
  - 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
  - C runtime library: Learning the Korn Shell, 6.1.3.1. More About C Compilers
  
 
  
  names of: Learning the Korn Shell, 6.1.3.1. More About C Compilers
  
  
obsolete commands: UNIX in a Nutshell, B. Obsolete Commands
obsolete features in next release: Learning the Korn Shell, A.7. The Future of the Korn Shell
obtaining source code
  - awk: sed & awk, Availability of sed and awk
  
 
  
  commercial awk versions
    - sed & awk, 11.3.1. MKS awk
    
- sed & awk, 11.3.2. Thompson Automation awk (tawk)
    
- sed & awk, 11.3.3. Videosoft VSAwk
  
   
  elvis editor: Learning the vi Editor, 10.12. Sources and Supported Operating Systems
  
  
examples: 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)
  
  
  nvi editor: Learning the vi Editor, 9.11. Sources and Supported Operating Systems
  
  
sample programs: sed & awk, Sample Programs
  
  
  sed: sed & awk, Availability of sed and awk
  
  
      vile editor: Learning the vi Editor, 12.11. Sources and Supported Operating Systems
  
  
  vim editor: Learning the vi Editor, 11.11. Sources and Supported Operating Systems
  
  
ocrnl flag: UNIX Power Tools, 41.2.1. How We Made It This Far (Back?) 
octal cgaracter strings: UNIX Power Tools, 7.8. Highlighting in Shell Prompts 
octal dumps, producing: UNIX in a Nutshell, Chapter 2, Reference: od
octal numbers
  - sed & awk, 7.6. Expressions
  
- UNIX Power Tools, 1.23. File Access Permissions 
  
- for permissions: UNIX Power Tools, 17.15. Searching for Files by Permission 
  
   
  
  interpreting: UNIX Power Tools, 45.35.1. With echo 
  
  
  of ASCII characters: UNIX Power Tools, 51.3. ASCII Characters: Listing and Getting Values 
  
  
octothorpe (#) for comments
  - sed & awk, 5.2. Comment
  
- sed & awk, 7.4.1. Describing Your Script
  
- sed & awk, B.2.2.2. Comments
  
- #n for suppressing output: sed & awk, 5.2. Comment
  
    
  
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
  - UNIX in a Nutshell, 4.3.2. Built-in Shell Variables
 
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
olid hardware: UNIX Power Tools, 20.6. Writing a Tape Drive on a Remote Machine 
onintr command: 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 help
  - elvis editor: Learning the vi Editor, 10.3. Online Help and Other Documentation
  
 
  
  nvi editor: Learning the vi Editor, 9.3. Online Help and Other Documentation
  
  
  vi tutorial: Learning the vi Editor, E.1.5. Online vi Tutorial
  
  
  vile editor: Learning the vi Editor, 12.3. Online Help and Other Documentation
  
  
  vim editor: Learning the vi Editor, 11.3. Online Help and Other Documentation
  
  
online manual: (see manpages)
online manual source file extension: UNIX Power Tools, 1.17. Filename Extensions 
:only (:on) command (vim): Learning the vi Editor, 11.5. Multiwindow Editing
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)
open mode (elvis): Learning the vi Editor, 10.10. Interesting Features
opening files: Learning the vi Editor, 1.1.1. Opening a File 
  - at specific place: Learning the vi Editor, 4.2.1. Advancing to a Specific Place 
  
 
  
  multiple files at once
    - Learning the vi Editor, 5.5.1. Invoking vi on Multiple Files
    
- Learning the vi Editor, 5.5.3. Calling in New Files 
  
  
  previous file: Learning the vi Editor, 5.5.4. Switching Files from vi
  
  
  read-only mode: Learning the vi Editor, 4.2.2. Read-only Mode 
  
  
operating system, definition of: Learning the UNIX Operating System, The UNIX Operating System
operators
  - arithmetic
 
    - UNIX Power Tools, 45.28. Quick Reference: expr 
    
- UNIX Power Tools, 47.4.3.2. Arithmetic Operators 
  
  
  assignment: UNIX Power Tools, 47.4.3.1. Assignment Operators 
  
  
    awk
  - UNIX Power Tools, 33.11.4. Operators 
  
 
  
sed & awk, B.2.5.6. Operators
  UNIX in a Nutshell, 11.5. Operators
  arithmetic: sed & awk, 7.6. Expressions
  
  
  assignment: sed & awk, 7.6. Expressions
  
  
  Boolean: sed & awk, 7.8. Relational and Boolean Operators
  
  
  postfix versus prefix: sed & awk, 7.6. Expressions
  
  
  relational: sed & awk, 7.8. Relational and Boolean Operators
  
  
bitwise: UNIX Power Tools, 47.4.3.3. Bitwise and Logical Operators 
  
  
  comparison: UNIX Power Tools, 47.4.3.4. Comparison Operators 
  
  
  file inquiry: UNIX Power Tools, 47.4.3.5. File Inquiry Operators 
  
  
  logical
    - UNIX Power Tools, 45.28. Quick Reference: expr 
    
- UNIX Power Tools, 47.4.3.3. Bitwise and Logical Operators 
  
  
  precedence in C shell: UNIX Power Tools, 47.4.2. Expressions 
  
  
  relational: UNIX Power Tools, 45.28. Quick Reference: expr 
  
  
  string editing: UNIX Power Tools, 45.12. Parameter Substitution 
  
  
  unmatched: UNIX Power Tools, 46.1.2. Unmatched Operators 
  
  
operators, C shell: UNIX in a Nutshell, 5.4.1. Operators
opost flag: UNIX Power Tools, 41.2.1. How We Made It This Far (Back?) 
OPTARG
- Learning the Korn Shell, 6.1.3. getopts
 
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
  - (see also under specific option)
  
- 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
  
- 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 also command-line options)
  
 
  
  Learning the UNIX Operating System, 1.2. Syntax of UNIX Command Lines
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
  
  
  in next release: Learning the Korn Shell, A.7. The Future of the Korn Shell
  
  
  keyword: Learning the Korn Shell, 3.5.1. Environment Variables
  
    - obsolescence in next 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
  
  
  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
  
   
  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 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 vi Editor, A. Quick Reference
  
- Learning the vi Editor, 4.2. Options When Starting 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
  
    - PS4 prompt in: Learning the Korn Shell, 9.1.1. Set Options
    
 
    
    tracing function execution: Learning the Korn Shell, 9.1.1. Set Options
    
    
  
options, set command
  - (see also :set command)
  
- Learning the vi Editor, 7.1.1. The :set Command 
  
- Learning the vi Editor, C. Setting Options
   
viewing current: Learning the vi Editor, 7.1.1. The :set Command 
  
  
  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)
otherfont display mode (elvis): Learning the vi Editor, 10.9.2. Syntax Highlighting
out of band approach for flow control: UNIX Power Tools, 41.2.4. Flow Control (We Hope) 
outlinemono option (elvis): Learning the vi Editor, 10.6.4. Options
output: sed & awk, 2.2. Command-Line Syntax
  - buffer, flushing: sed & awk, 11.2.1.3. Flushing buffered output
  
 
  
  buffering: UNIX Power Tools, 13.9. Send Output Two or More Places with tee 
  
  
  directing to files
    - sed & awk, 2.3.2.1. Saving output
    
- sed & awk, 10.5. Directing Output to Files and Pipes
  
  
  directing to pipes: sed & awk, 10.5.1. Directing Output to a Pipe
  
  
  formatting (awk): sed & awk, 7.9. Formatted Printing
  
  
  formatting into columns: sed & awk, 10.6. Generating Columnar Reports
  
  
  from background processes: UNIX Power Tools, 12.7. Stop Background Output with stty tostop 
  
  
  redirecting: UNIX Power Tools, 1.30. Redirecting Input and Output 
  
    - (see also redirecting input/output)
- redirecting: Learning the UNIX Operating System, 5.1. Standard Input and Standard Output
  
    
  
  saving: sed & awk, 4.3. Testing and Saving Output
  
  
  stdout: (see standard output)
  
  
  suppressing
    - sed & awk, 2.3.2.2. Suppressing automatic display of input lines
    
- sed & awk, 5.2. Comment
  
  
  tee program: UNIX Power Tools, 13.9. Send Output Two or More Places with tee 
  
  
  testing: sed & awk, 4.3. Testing and Saving Output
  
  
  to terminal: sed & awk, 11.2.1.4. Special filenames
  
  
UNIX, reading into files: Learning the vi Editor, 7.2. Executing UNIX Commands 
output device, specifying: UNIX Power Tools, 50.12. Common UNIX Error Messages 
output modes, setting: UNIX in a Nutshell, Chapter 2, Reference: stty
output processing commands (sed): UNIX in a Nutshell, 10.4.3. Input/Output Processing
output redirection operator (>>): Learning the UNIX Operating System, 5.1.1.2. The >> operator
output redirection operator (>)
  - Learning the UNIX Operating System, 5.1. Standard Input and Standard Output
  
- Learning the UNIX Operating System, 5.1.1.1. The > operator
  
output to terminals,
  stopping and restarting: UNIX Power Tools, 42.2.1. Output Stopped? 
  
overstrike mode: Learning the vi Editor, 2.3.3.4. Substituting text
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
  - UNIX in a Nutshell, Chapter 2, Reference: chown
 
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 in a Nutshell, Chapter 2, Reference: chgrp
  
  
  changing without chown command: UNIX Power Tools, 22.21. How to Change File Ownership Without chown
  
  
  group: (see groups)
  
  
searching by: UNIX Power Tools, 17.16. Searching by Owner and Group 
  
  
"[open mode]" message: Learning the vi Editor, 1.1.2. Problems Opening Files 
Symbols
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 O'Reilly & Associates, Inc.
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