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: H

h or H (hold) commands, sed editor: 34.17. The Deliberate Scrivener

h command: 34.17. The Deliberate Scrivener

hacking: 1.2. Power Grows on You

handlers for DDoS attacks: 48.5. What We Mean by DoS

hangups (see HUP signals)

hangups, background processes and: 23.10. nohup

hard disk quota limits: 15.11. Disk Quotas

hard drives: 44.2. Reading Kernel Boot Output

hard links: 10.4. More About Links

10.6. Stale Symbolic Links

-i file in home directory for confirmation of file deletion: 14.8. Safer File Deletion in Some Directories

broken: 10.5. Creating and Removing Links

copying: 10.12. Copying Directory Trees with cp -r

disk space and: 15.4. Save Space with a Link

finding for files: 9.24. Finding the (Hard) Links to a File

symbolic links vs.: 10.4.1. Differences Between Hard and Symbolic Links

tar -l command, printing messages about: 15.7. Save Space: tar and compress a Directory Tree

to .enter and .exit files: 31.13. Automatic Setup When You Enter/Exit a Directory

hardware: 44.1. Quick Introduction to Hardware

dialup PPP sessions: 44.11. Setting Up a Dialup PPP Session

disk partitioning: 44.4. Disk Partitioning

PCs: 44.4. Disk Partitioning

filesystem types and /etc/fstab: 44.5. Filesystem Types and /etc/fstab

filesystems

mounting NFS and SMBFS: 44.9. Mounting Network Filesystems — NFS, SMBFS

kernel boot output for devices: 44.2. Reading Kernel Boot Output

kernel configuration to support: 44.3. Basic Kernel Configuration

modems: 44.10. Win Is a Modem Not a Modem?

network devices, configuring: 44.8. Network Devices — ifconfig

/proc filesystem files: 24.9.5. A Glimpse at Hardware

serial consoles: 44.14. Decapitating Your Machine — Serial Consoles

sound cards and other: 44.13. Dealing with Sound Cards and Other Annoying Hardware

supported hardware lists: 44.13. Dealing with Sound Cards and Other Annoying Hardware

USB configuration: 44.12. USB Configuration

hash codes: 16.4. Inside spell

hash command: 27.6. Controlling Shell Command Searches

hashes (Perl): 41.5. Perl Boot Camp, Part 2: Variables and Data Types

41.5.3. Hashes

functions for: 41.5.3. Hashes

iterating over: 41.5.3. Hashes

head command: 8.15. newer: Print the Name of the Newest File

12.12. Printing the Top of a File

37.9. Making an Arbitrary-Size File for Testing

43.12. What Can You Do with an Empty File?

c option to print characters/bytes: 12.12. Printing the Top of a File

GNU version, c nk and c nm options: 12.12. Printing the Top of a File

n option to control number of lines displayed: 12.12. Printing the Top of a File

head of a pathname (:h operator): 28.5. String Editing (Colon) Operators

headers, mail

creating with cat: 21.12.2. MIME Encoding

proper formation of: 21.12.2. MIME Encoding

removing with behead script: 21.5. Remove Mail/News Headers with behead

help: 2.1. The man Command

command versions: 2.6. Which Version Am I Using?

info commands: 2.9. The info Command

man command: 2.1. The man Command

searching online manual pages: 2.4. Searching Online Manual Pages

terminals, tty command: 2.7. What tty Am I On?

Unix system names: 2.5. How Unix Systems Remember Their Names

whatis command: 2.2. whatis: One-Line Command Summaries

whereis command: 2.3. whereis: Finding Where a Command Is Located

who command: 2.8. Who's On?

help command (lpc): 45.3. Printer Control with lpc

here documents: 27.16. Here Documents

28.13. Here Document Example #1: Unformatted Form Letters

hereis document terminators: 36.19. Quoted hereis Document Terminators: sh Versus csh

hgrep script: 13.16. A Highlighting grep

hidden files, listing with and ls -a and ls -A: 8.9. Showing Hidden Files with ls -A and -a

hierarchy, filesystem: 40.1. /usr/bin and Other Software Directories

highlighting: 8.6.1. Trying It

hgrep script, using: 13.16. A Highlighting grep

in shell prompts: 4.10. Highlighting and Color in Shell Prompts

histchars shell variable, changing history characters with: 30.15. Changing History Characters with histchars

histfile shell variable (tcsh): 3.3. Shell Setup Files — Which, Where, and Why

HISTFILESIZE environment variable: 30.12. Picking Up Where You Left Off

history command: 30.1. The Lessons of History

-d and -f options, showing dates and times: 30.7. History by Number

-D option, showing elapsed time: 30.7. History by Number

-h option: 30.13. Pass History to Another Shell

-r (reverse) option: 30.13. Pass History to Another Shell

bash shell, cautions about using: 30.7. History by Number

-w option: 30.13. Pass History to Another Shell

listing specified number of previous commands: 30.7. History by Number

.history file: 30.12. Picking Up Where You Left Off

tcsh shells: 3.3. Shell Setup Files — Which, Where, and Why

history number in shell prompts: 4.3. Dynamic Prompts

30.2. History in a Nutshell

30.7. History by Number

multiline C-shell prompt: 4.7. Multiline Shell Prompts

history of commands: 1.6. There Are Many Shells

30.1. The Lessons of History

!$ sequence for safety with wildcards: 30.6. Using !$ for Safety with Wildcards

changing history characters with histchars: 30.15. Changing History Characters with histchars

checking with :p operator: 30.11. Check Your History First with :p

history numbers: 30.7. History by Number

history substitution

!$ sequence: 30.3. My Favorite Is !$

mkdir command, using with: 7.8. Making Directories Made Easier

!:n* sequence: 30.4. My Favorite Is !:n*

history substitutions: 30.8. History Substitutions

narrowing searches with: 13.11. Narrowing a Search Quickly

passing to other shells: 30.13. Pass History to Another Shell

repeating commands with: 28.11. Repeating a Time-Varying Command

saving history in history file: 30.12. Picking Up Where You Left Off

bash, ksh, and zsh shells: 30.12.1. bash, ksh, zsh

C shells: 30.12.2. C Shells

shell command line-editing: 30.14. Shell Command-Line Editing

bash: 30.14.5. bash Editing

Emacs editing mode: 30.14.2. Emacs Editing Mode

ksh (Korn shell): 30.14.4. ksh Editing

tcsh shell: 30.14.3. tcsh Editing

vi editing mode: 30.14.1. vi Editing Mode

zsh: 30.14.6. zsh Editing

history shell variable: 35.9. Shell Variables

history substitution: 29.3. C-Shell Aliases with Command-Line Arguments

30.2. History in a Nutshell

30.8. History Substitutions

disabling in bash: 30.16. Instead of Changing History Characters

editing substitutions in C shells, zsh, and bash: 28.5. String Editing (Colon) Operators

for loop, using for: 28.9.1. A foreach Loop

HISTSIZE environment variable: 30.1. The Lessons of History

30.12. Picking Up Where You Left Off

HOBLink JWT RDP client: 47.9.3. Hob

hold (h or H) commands, sed editor: 34.14. Hold Space: The Set-Aside Buffer

34.17. The Deliberate Scrivener

h command: 34.17. The Deliberate Scrivener

HOLD SCREEN button: 5.6.1. Output Stopped?

hold space (sed editor): 34.17. The Deliberate Scrivener

transforming part of a line, use in: 34.15. Transforming Part of a Line

home directory: 1.15. Your Home Directory

bin subdirectory, creating: 7.4. A bin Directory for Your Programs and Scripts

finding: 7.2. Many Homes

31.11. Finding (Anyone's) Home Directory, Quickly

HOME environment variable: 35.5. Predefined Environment Variables

pathname of: 3.7. Use Absolute Pathnames in Shell Setup Files

$HOME environment variable: 3.7. Use Absolute Pathnames in Shell Setup Files

7.2. Many Homes

$HOME/.rhosts file: 6.10.2. Starting a Remote Client with rsh and ssh

host allow directive: 47.2. Installing and Configuring Samba

host-based access control: 6.10.2. Starting a Remote Client with rsh and ssh

host-based modems: 44.10. Win Is a Modem Not a Modem?

host tool: 46.9. Domain Name Service (DNS)

hostname command: 2.5. How Unix Systems Remember Their Names

hostnames

completion by shells: 28.6.3. Command-Specific Completion

for IP address, finding with dig -x: 46.3. Status and Troubleshooting

mapped to IP addresses by DNS: 46.9. Domain Name Service (DNS)

NETBIOS: 47.2. Installing and Configuring Samba

in shell prompts: 4.2. Static Prompts

multiline C-shell prompt: 4.7. Multiline Shell Prompts

showing with who am i command: 3.12. Terminal Setup: Testing Remote Hostname and X Display

hosts

.cshrc.$HOST file for per host setup: 3.18. A .cshrc.$HOST File for Per Host Setup

trusted-host authentication on SSH: 51.5. General and Authentication Problems

hosts.equiv file: 6.10.2. Starting a Remote Client with rsh and ssh

HTML: 45.13. Formatting Markup Languages — troff, LATEX, HTML, and So On

converted into PostScript: 45.16. Converting Typeset Files into a Printing Language

editing files with batch editing script: 20.7. ed/ex Batch Edits: A Typical Example

file extensions: 1.12. Filename Extensions

htmllib and HTMLParser modules: 42.4. Python and the Web

HTMLParser module: 42.7. htmllib and HTMLParser

HTTP

Emacs facility for: 19.2. Emacs Features: A Laundry List

URI protocol types: 40.6.1. Configuring the sources.list File

hung terminals, fixing: 5.6. Checklist: Terminal Hangs When I Log In

aborting programs: 5.6.5. Aborting Programs

output stopped by HOLD SCREEN or SCROLL LOCK button: 5.6.1. Output Stopped?

program waiting for input: 5.6.3. Program Waiting for Input?

stalled data connection: 5.6.4. Stalled Data Connection?

stopped jobs, checking for: 5.6.2. Job Stopped?

HUP (hangup) signals: 24.10. What Are Signals?

24.13. Printer Queue Watcher: A Restartable Daemon Shell Script

ignoring with nohup command: 23.10. nohup

.hushlogin file: 3.1. What Happens When You Log In

hyphen , under symbols) (see - (dash)

HZ constant, frequency of system time updates: 37.6. How Unix Keeps Time

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