Symbols & Numbers | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Index: O

-O file attribute operator: 5.1.4.3. File attribute checking (Learning the Korn Shell)

O (open line) command: 2.4. More Ways to Insert Text (Learning the vi Editor)

-o option (elvis): 10.11. elvis Futures (Learning the vi Editor)

-o option (vim): 11.2. Important Command-Line Arguments (Learning the vi Editor)

o (other) permission: 3.3.3. Setting Permissions with chmod (Learning Unix)

oawk programming language (see awk programming language)

_ _OBJC_ _ macro[OBJC_ _ macro[: 4.2.2.1. Macros (Mac OS X for Unix Geeks)

object-code libraries: 6.1.3.1. More about C compilers (Learning the Korn Shell)

C runtime library and: 6.1.3.1. More about C compilers (Learning the Korn Shell)

6.1.3.1. More about C compilers (Learning the Korn Shell)

object files (see archives; files)

generating: 2.1. Alphabetical Summary of Commands (Unix in a Nutshell)

removing information from: 2.1. Alphabetical Summary of Commands (Unix in a Nutshell)

object oriented programming (OOP) in Perl: 41.4. Perl Boot Camp, Part 1: Typical Script Anatomy (Unix Power Tools)

Objective-C programming language, "Hello, World" illustrating: 4.2.5. Frameworks (Mac OS X for Unix Geeks)

objects

file extension: 1.12. Filename Extensions (Unix Power Tools)

Python: 42.3.3. Everything's an Object (Unix Power Tools)

creating: 42.3.3. Everything's an Object (Unix Power Tools)

file objects: 42.3.5. I/O and Formatting (Unix Power Tools)

resources in applications, association with: 6.3. X Resource Syntax (Unix Power Tools)

objects, Perl: 41.4. Perl Boot Camp, Part 1: Typical Script Anatomy (Unix Power Tools)

releasing resources with close( ): 41.4. Perl Boot Camp, Part 1: Typical Script Anatomy (Unix Power Tools)

obsolete commands: B. Obsolete Commands (Unix in a Nutshell)

obtaining

awk source code: 0.2. Availability of sed and awk (sed & awk)

commercial awk versions: 11.3.1. MKS awk (sed & awk)

11.3.2. Thompson Automation awk (tawk) (sed & awk)

11.3.3. Videosoft VSAwk (sed & awk)

examples: 0.3. Obtaining Example Source Code (sed & awk)

gawk source code: 11.2.3. GNU awk (gawk) (sed & awk)

mawk source code: 11.2.4. Michael's awk (mawk) (sed & awk)

sample programs: 0.. Sample Programs (sed & awk)

sed source code: 0.2. Availability of sed and awk (sed & awk)

obtaining source code

elvis editor: 10.12. Sources and Supported Operating Systems (Learning the vi Editor)

nvi editor: 9.11. Sources and Supported Operating Systems (Learning the vi Editor)

vile editor: 12.11. Sources and Supported Operating Systems (Learning the vi Editor)

vim editor: 11.11. Sources and Supported Operating Systems (Learning the vi Editor)

octal character strings: 4.10. Highlighting and Color in Shell Prompts (Unix Power Tools)

octal dumps, producing: 2.1. Alphabetical Summary of Commands (Unix in a Nutshell)

octal notation: 10.2.1. umask (Learning the Korn Shell)

octal number

permissions written as: 50.5. Using chmod to Change File Permission (Unix Power Tools)

octal numbers: 7.6. Expressions (sed & awk)

permissions, writing as: 50.2.1. User, Group, and World (Unix Power Tools)

values of nonprinting characters: 8.12. Showing Nonprintable Characters in Filenames (Unix Power Tools)

octothorpe (#) for comments: 5.2. Comment (sed & awk)

7.4.1. Describing Your Script (sed & awk)

B.2.2.2. Comments (sed & awk)

#n for suppressing output: 5.2. Comment (sed & awk)

od -c command, displalying nonprintable files: 12.4. Show Nonprinting Characters with cat -v or od -c (Unix Power Tools)

12.4. Show Nonprinting Characters with cat -v or od -c (Unix Power Tools)

od c command, dumping raw directory contets to screen: 10.2. What's Really in a Directory? (Unix Power Tools)

od command: 2.1. Alphabetical Summary of Commands (Unix in a Nutshell)

-c option: 14.14. Using unlink to Remove a File with a Strange Name (Unix Power Tools)

offset script: 21.7. offset: Indent Text (Unix Power Tools)

OFMT variable: 7.7. System Variables (sed & awk)

7.9. Formatted Printing (sed & awk)

OFS variable: 7.7. System Variables (sed & awk)

7.7. System Variables (sed & awk)

-ok operator (findcommand): 9.9. Running Commands on What You Find (Unix Power Tools)

oldlinks script: 8.16. oldlinks: Find Unconnected Symbolic Links (Unix Power Tools)

OLDPWD shell variable: 4.3.2. Built-in Shell Variables (Unix in a Nutshell)

OLDPWD variable: 3.4.2.10. Miscellaneous variables (Learning the Korn Shell)

3.5.1. Environment Variables (Learning the Korn Shell)

4.7. Advanced Examples: pushd and popd (Learning the Korn Shell)

on-disk address of file data blocks: 14.2. How Unix Keeps Track of Files: Inodes (Unix Power Tools)

One-Step (GNU-Darwin auto-installer for OS X): 40.8. The curl Application and One-Step GNU-Darwin Auto-Installer for OS X (Unix Power Tools)

one_stop script (GNU-Darwin), caution before executing: 6.3. GNU-Darwin (Mac OS X for Unix Geeks)

onintr command: 5.8. Built-in C Shell Commands (Unix in a Nutshell)

online documentation (see info command manual pages)

online help

elvis editor: 10.3. Online Help and Other Documentation (Learning the vi Editor)

nvi editor: 9.3. Online Help and Other Documentation (Learning the vi Editor)

vi tutorial: E.1.5. Online vi Tutorial (Learning the vi Editor)

vile editor: 12.3. Online Help and Other Documentation (Learning the vi Editor)

vim editor: 11.3. Online Help and Other Documentation (Learning the vi Editor)

online manual (see manpages)

online manual source file extension: 1.12. Filename Extensions (Unix Power Tools)

:only (:on) command (vim): 11.5. Multiwindow Editing (Learning the vi Editor)

open -a command: 1.5.2. Working with File and Directory Names (Mac OS X for Unix Geeks)

open command: 1.5.4. Additional Shell Commands (Mac OS X for Unix Geeks)

1.6.3. Macintosh Tools (Mac OS X for Unix Geeks)

open command (ex): 9.2. Alphabetical Summary of ex Commands (Unix in a Nutshell)

open files

file descriptors and: 36.15. Overview: Open Files and File Descriptors (Unix Power Tools)

Open Firmware variables, vram utility for modifying: 8.3.2. nvram (Mac OS X for Unix Geeks)

"[open mode]" message: 1.1.2. Problems Opening Files (Learning the vi Editor)

open mode (elvis): 10.10. Interesting Features (Learning the vi Editor)

opendiff command: B. Command-Line Tools: The Missing Manpages (Mac OS X for Unix Geeks)

opening files: 1.1.1. Opening a File (Learning the vi Editor)

multiple files at once: 5.5.1. Invoking vi on Multiple Files (Learning the vi Editor)

5.5.3. Calling in New Files (Learning the vi Editor)

previous file: 5.5.4. Switching Files from vi (Learning the vi Editor)

read-only mode: 4.2.2. Read-only Mode (Learning the vi Editor)

at specific place: 4.2.1. Advancing to a Specific Place (Learning the vi Editor)

OpenSSH: 51.3. Free SSH with OpenSSH (Unix Power Tools)

Pluggable Authentication Modules (PAM), problems with: 51.5. General and Authentication Problems (Unix Power Tools)

OpenVMS: 1.6.2. Filenames and Wildcards (Learning the Korn Shell)

1.7.3. Pipelines (Learning the Korn Shell)

filenames and: 4.5.2.1. Regular expression basics (Learning the Korn Shell)

multitasking and: 8. Process Handling (Learning the Korn Shell)

openwin command: B.2. Alphabetical Summary of Commands (Unix in a Nutshell)

Opera web browsers: 6.3. Lynx, a Text-based Web Browser (Learning Unix)

operating system, definition of: 0.1. The Unix Family of Operating Systems (Learning Unix)

operating systems

BSD Unix, versions of make utility: 40.3. Which make? (Unix Power Tools)

filename wildcards: 33.2. Filename Wildcards in a Nutshell (Unix Power Tools)

shells emulating operating systems: 33.3. Who Handles Wildcards? (Unix Power Tools)

graphical interfaces: 1.2. Power Grows on You (Unix Power Tools)

interoperability: 47.1. Building Bridges (Unix Power Tools)

POSIX standard for interoprability: 1.3. The Core of Unix (Unix Power Tools)

operating systems, endian order and: 4.3. Architectural Issues (Mac OS X for Unix Geeks)

operators

( ) (subshell) operator: 3.3. Shell Setup Files — Which, Where, and Why (Unix Power Tools)

= (assignment) operator: 41.4. Perl Boot Camp, Part 1: Typical Script Anatomy (Unix Power Tools)

: (colon), string editing: 28.5. String Editing (Colon) Operators (Unix Power Tools)

&&: 10.13. Copying Directory Trees with tar and Pipes (Unix Power Tools)

arithmetic: 36.21.1. Syntax (Unix Power Tools)

array: 41.5.2. Arrays (Unix Power Tools)

array-expanding: 9.23.2. Expanding Ranges (Unix Power Tools)

awk utility: 20.10.4. Operators (Unix Power Tools)

20.10.4. Operators (Unix Power Tools)

Boolean: 41.5.1. Scalars (Unix Power Tools)

in expressions: 32.3. Understanding Expressions (Unix Power Tools)

precedence of: 32.3. Understanding Expressions (Unix Power Tools)

for find command: 9.1. How to Use find (Unix Power Tools)

-exec: 9.9. Running Commands on What You Find (Unix Power Tools)

-name: 9.4. Looking for Files with Particular Names (Unix Power Tools)

search operators: 9.6. Be an Expert on find Search Operators (Unix Power Tools)

time (-mtime, -atime, and -ctime): 9.7. The Times That find Finds (Unix Power Tools)

9.8. Exact File-Time Comparisons (Unix Power Tools)

find command, ! and -name: 13.3. Finding Text That Doesn't Match (Unix Power Tools)

flow-control, for loops in Perl: 41.6. Perl Boot Camp, Part 3: Branching and Looping (Unix Power Tools)

:gt operator (C shell): 4.14. dirs in Your Prompt: Better Than $cwd (Unix Power Tools)

if command, awk: 20.10.7. Alphabetical Summary of Commands (Unix Power Tools)

logical: 36.21.1. Syntax (Unix Power Tools)

<< (here document) operator: 28.13. Here Document Example #1: Unformatted Form Letters (Unix Power Tools)

numerical: 41.5.1. Scalars (Unix Power Tools)

parameter substitution (Bourne shell): 36.7. Parameter Substitution (Unix Power Tools)

precedence of, Boolean operators in Perl: 41.5.1. Scalars (Unix Power Tools)

redirect and append (>>): 17.12. Appending to an Existing File (Unix Power Tools)

relational: 36.21.1. Syntax (Unix Power Tools)

41.5.1. Scalars (Unix Power Tools)

in shells, listing with definitions: 27.17. "Special" Characters and Operators (Unix Power Tools)

shift (Perl): 41.4. Perl Boot Camp, Part 1: Typical Script Anatomy (Unix Power Tools)

string: 4.6. Faster Prompt Setting with Built-ins (Unix Power Tools)

41.5.1. Scalars (Unix Power Tools)

string editing: 36.7. Parameter Substitution (Unix Power Tools)

unmatched: 37.1.2. Unmatched Operators (Unix Power Tools)

operators, awk: B.2.5.6. Operators (sed & awk)

11.5. Operators (Unix in a Nutshell)

arithmetic: 7.6. Expressions (sed & awk)

assignment: 7.6. Expressions (sed & awk)

Boolean: 7.8. Relational and Boolean Operators (sed & awk)

postfix versus prefix: 7.6. Expressions (sed & awk)

relational: 7.8. Relational and Boolean Operators (sed & awk)

operators, C shell: 5.4.1. Operators (Unix in a Nutshell)

Ops (channel operators): 6.7.2.1. Introducing IRC (Learning Unix)

OPTARG shell variable: 4.3.2. Built-in Shell Variables (Unix in a Nutshell)

OPTARG variable: 6.1.3. getopts (Learning the Korn Shell)

/optdirectory: 2.4. Searching Online Manual Pages (Unix Power Tools)

40.1. /usr/bin and Other Software Directories (Unix Power Tools)

optimization: 5.6. Prebinding (Mac OS X for Unix Geeks)

optimizing disk space: 15.1. Disk Space Is Cheap (Unix Power Tools)

compressing a directory tree: 15.7. Save Space: tar and compress a Directory Tree (Unix Power Tools)

fine-tuning: 15.9. Compressing a Directory Tree: Fine-Tuning (Unix Power Tools)

compressing files: 15.6. Compressing Files to Save Space (Unix Power Tools)

executable binaries, stripping: 15.10. Save Space in Executable Files with strip (Unix Power Tools)

limiting files sizes: 15.5. Limiting File Sizes (Unix Power Tools)

links, using: 15.4. Save Space with a Link (Unix Power Tools)

quotas on disk usage: 15.11. Disk Quotas (Unix Power Tools)

OPTIND shell variable: 4.3.2. Built-in Shell Variables (Unix in a Nutshell)

OPTIND variable: 6.1.3. getopts (Learning the Korn Shell)

options: 1.5.1. Commands, Arguments, and Options (Learning the Korn Shell)

3. Customizing Your Environment (Learning the Korn Shell)

3.3. Options (Learning the Korn Shell)

2.2. Command-Line Syntax (sed & awk)

2.3.1. Specifying Simple Instructions (sed & awk)

(see also under specific option)

awk: 2.4.3. Summary of Options (sed & awk)

combining: 2.3.2.3. Mixing options (POSIX) (sed & awk)

command-line (see command-line options)

emacs: 2.1. Enabling Command-Line Editing (Learning the Korn Shell)

keyword: 3.5.1. Environment Variables (Learning the Korn Shell)

processing with arguments: 6.1.2. Options with Arguments (Learning the Korn Shell)

sed: 2.3.2.4. Summary of options (sed & awk)

turning on/off: 3.3. Options (Learning the Korn Shell)

vi: 2.1. Enabling Command-Line Editing (Learning the Korn Shell)

options for command lines: 1.2. Syntax of Unix Command Lines (Learning Unix)

options, set command: 7.1.1. The :set Command (Learning the vi Editor)

(see also :set command)

viewing current: 7.1.1. The :set Command (Learning the vi Editor)

options, set command (list): C. Setting Options (Learning the vi Editor)

options, vi command: 4.2. Options When Starting vi (Learning the vi Editor)

A. Quick Reference (Learning the vi Editor)

opttest script: 35.24. Standard Command-Line Parsing (Unix Power Tools)

or (-o) operator, case command: 36.25. Testing Two Strings with One case Statement (Unix Power Tools)

OR (||) operator: 7.8. Relational and Boolean Operators (sed & awk)

OR operator: 9.6. Be an Expert on find Search Operators (Unix Power Tools)

| in extended regular expressions: 32.15. Extended Regular Expressions (Unix Power Tools)

| (logical OR) operator: 36.21.1. Syntax (Unix Power Tools)

agrep command, searching for multiple patterns: 13.6. Approximate grep: agrep (Unix Power Tools)

evaluating OR expressions: 9.12. Finding Many Things with One Command (Unix Power Tools)

OR operator (||): 20.10.2.1. Patterns (Unix Power Tools)

28.16. Separating Commands with Semicolons (Unix Power Tools)

or operator (Boolean or): 41.5.1. Scalars (Unix Power Tools)

order of operations: 3.1. That's an Expression (sed & awk)

commands in scripts: 4.1. Applying Commands in a Script (sed & awk)

OroborOSX: 9.2. Running XDarwin (Mac OS X for Unix Geeks)

9.5. Making X11 Applications More Aqua-like (Mac OS X for Unix Geeks)

installing, caution with: 9.5.1. An Aqua-like X11: OroborOSX (Mac OS X for Unix Geeks)

orphans: 8.3.3.2. BSD (Learning the Korn Shell)

8.5. Coroutines (Learning the Korn Shell)

24.7.2. BSD (Unix Power Tools)

ORS variable: 7.7. System Variables (sed & awk)

7.7.1. Working with Multiline Records (sed & awk)

osascript commands: 1.3.1.2. .command files (Mac OS X for Unix Geeks)

-ot file attribute operator: 5.1.4.3. File attribute checking (Learning the Korn Shell)

other (o) permission: 3.3.3. Setting Permissions with chmod (Learning Unix)

otherfont display mode (elvis): 10.9.2. Syntax Highlighting (Learning the vi Editor)

otherwise case (Pascal-derived languages): 5.3. case (Learning the Korn Shell)

out-of-date links (see symbolic links, stale)

outlinemono option (elvis): 10.6.4. Options (Learning the vi Editor)

output (see input/output standard output)

2.2. Command-Line Syntax (sed & awk)

9.9. Running Commands on What You Find (Unix Power Tools)

buffer, flushing: 11.2.1.3. Flushing buffered output (sed & awk)

directing to files: 2.3.2.1. Saving output (sed & awk)

10.5. Directing Output to Files and Pipes (sed & awk)

directing to pipes: 10.5.1. Directing Output to a Pipe (sed & awk)

formatting (awk): 7.9. Formatted Printing (sed & awk)

formatting into columns: 10.6. Generating Columnar Reports (sed & awk)

saving: 4.3. Testing and Saving Output (sed & awk)

suppressing: 2.3.2.2. Suppressing automatic display of input lines (sed & awk)

5.2. Comment (sed & awk)

testing: 4.3. Testing and Saving Output (sed & awk)

to terminal: 11.2.1.4. Special filenames (sed & awk)

output modes, setting: 2.1. Alphabetical Summary of Commands (Unix in a Nutshell)

output processing commands (sed): 10.4.3. Input/Output Processing (Unix in a Nutshell)

output redirection operator (> and >>): 5.1. Standard Input and Standard Output (Learning Unix)

output (UNIX), reading into files: 7.2. Executing UNIX Commands (Learning the vi Editor)

output/input redirecting: 5.1. Standard Input and Standard Output (Learning Unix)

overriding event translations: 6.4. X Event Translations (Unix Power Tools)

overstrike mode: 2.3.3.4. Substituting text (Learning the vi Editor)

overwrite mode (Emacs): 19.5. Putting Emacs in Overwrite Mode (Unix Power Tools)

overwriting files: 5.1.1.2. The > operator (Learning Unix)

27.4. Command Evaluation and Accidentally Overwriting Files (Unix Power Tools)

owner in long formats (ls): 3.1.8. Listing Files with ls (Learning Unix)

ownership, file: 14.2. How Unix Keeps Track of Files: Inodes (Unix Power Tools)

changing: 2.1. Alphabetical Summary of Commands (Unix in a Nutshell)

changing with chown function in Perl: 41.8. Perl Boot Camp, Part 5: Perl Knows Unix (Unix Power Tools)

changing without chown command: 50.15. How to Change File Ownership Without chown (Unix Power Tools)

determining: 50.3. Who Will Own a New File? (Unix Power Tools)

directory, setting sticky bit: 50.4. Protecting Files with the Sticky Bit (Unix Power Tools)

disk quotas and: 50.14. Why Can't You Change File Ownership? (Unix Power Tools)

groups: 49.6. Groups and Group Ownership (Unix Power Tools)

50.2.2. Which Group is Which? (Unix Power Tools)

groups, determining for: 49.5. Group Permissions in a Directory with the setgid Bit (Unix Power Tools)

permissions: 50.2. Tutorial on File and Directory Permissions (Unix Power Tools)

remote files, scp -p command and: 51.7. Server and Client Problems (Unix Power Tools)

security and: 50.1. Introduction to File Ownership and Security (Unix Power Tools)

user, group, and world: 50.2.1. User, Group, and World (Unix Power Tools)

ownership of files: 2.1. Alphabetical Summary of Commands (Unix in a Nutshell)

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