Unix Power Tools

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Index: D

d (matching numbers) in Perl regular expressions: 41.7. Perl Boot Camp, Part 4: Pattern Matching
d or D (delete) command, sed editor: 34.19. Multiline Delete
d or D (delete) commands, sed editor: 34.17. The Deliberate Scrivener
daemons: 1.10. The Kernel and Daemons
controlling terminal and: 24.6. The Controlling Terminal
cron daemon: 25.2.1. Execution Scheduling
DHCP: 46.10. Dynamic Host Configuration Protocol (DHCP)
inetd, disabling for security: 48.10. Disabling inetd
lpd: 45.8. Printing Over a Network
filters: 45.17. Converting Source Files Automagically Within the Spooler
nmbd: 47.2. Installing and Configuring Samba
printer: 45.3. Printer Control with lpc
removable media on Linux: 44.6. Mounting and Unmounting Removable Filesystems
restarting with the kill command: 24.13. Printer Queue Watcher: A Restartable Daemon Shell Script
Samba, restarting to share printers: 47.5. Printing with Samba
SMB: 47.2. Installing and Configuring Samba
SMB, running: 47.2. Installing and Configuring Samba
sshd
.pam file: 51.5. General and Authentication Problems
problems with: 51.7. Server and Client Problems
sshd, disabling printing and mail checking for: 51.5. General and Authentication Problems
tcpd: 48.12. TCP Wrappers
vold, for removable media: 44.6. Mounting and Unmounting Removable Filesystems
Darwin: 1.1. What's Special About Unix?
1.3. The Core of Unix
adding users to system: 49.2. When Does a User Become a User
enabling root access in: 49.12. Enabling Root in Darwin
data types, Python: 42.3.3. Everything's an Object
data types (Perl): 41.5. Perl Boot Camp, Part 2: Variables and Data Types
hashes: 41.5.3. Hashes
lists: 41.5.2. Arrays
references: 41.5.4. References
scalars: 41.5.1. Scalars
databases
distributed, updating: 11.11. Even More Uses for make
find command: 9.20. Finding Files (Much) Faster with a find Database
date and time, Bourne shell prompts, putting in: 4.15. External Commands Send Signals to Set Variables
date and time, including in shell prompt: 4.3. Dynamic Prompts
date command: 4.15. External Commands Send Signals to Set Variables
+ option: 8.17. Picking a Unique Filename Automatically
current date in dynamic shell prompt: 4.4. Simulating Dynamic Prompts
dater script: 43.11. Named Pipes: FIFOs
dd command
creating file for debugging purposes: 37.9. Making an Arbitrary-Size File for Testing
restoring files from remote tape drives: 38.7. Using tar to a Remote Tape Drive
restoring files remotely: 38.6.2. Remote Restoring
dd utility: 21.6. Low-Level File Butchery with dd
21.13. Text Conversion with dd
splitting files with: 21.9. Splitting Files at Fixed Points: split
DDoS (distributed denial-of-service attack): 48.5. What We Mean by DoS
dead links, listing: 8.16. oldlinks: Find Unconnected Symbolic Links
dead processes (see zombies)
Debian dselect tool (see dselect tool)
Debian Linux (see Linux)
debugging
Bourne shell scripts: 35.13. Test Exit Status with the if Statement
37.1. Tips for Debugging Shell Scripts
copying your work with script program: 37.7. Copy What You Do with script
line numbers reset in redirected loops: 37.1.5. Line Numbers Reset Inside Redirected Loops
making a file for testing: 37.9. Making an Arbitrary-Size File for Testing
numeric tests, errors in: 37.3. Stop Syntax Errors in Numeric Tests
output, piping to pager: 37.1.1. Use -xv
quoting command line arguments: 37.5. Quoting and Command-Line Parameters
saving output in file and displaying on screen: 37.1.1. Use -xv
shell variable: 37.2. Bourne Shell Debugger Shows a Shell Variable
shell variables: 37.2. Bourne Shell Debugger Shows a Shell Variable
string test syntax errors: 37.4. Stop Syntax Errors in String Tests
time keeping on Unix systems: 37.6. How Unix Keeps Time
unmatched code or fi unexpected errors: 37.1.4. Missing or Extra esac, ;;, fi, etc.
unmatched operators: 37.1.2. Unmatched Operators
core dumps and: 15.5.1. limit and ulimit
keysyms: 6.2. Using xev to Learn Keysym Mappings
network connectivity: 46.4. Where, Oh Where Did That Packet Go?
Perl code in Emacs editor: 19.2. Emacs Features: A Laundry List
recursion depth, messages about: 29.11.4. Functions Calling Functions: Factorials
setup files for account with hung terminal: 5.6. Checklist: Terminal Hangs When I Log In
su command, using to emulate accounts: 49.9. Substitute Identity with su
decimal numbers, sorting with sort: 22.5. Alphabetic and Numeric Sorting
declaring variables in Perl: 41.4. Perl Boot Camp, Part 1: Typical Script Anatomy
decoding uuencoded tar files: 21.12.1. uuencoding
decompressing files, bunzip2 program: 15.6. Compressing Files to Save Space
dedent script, removing whitespace from text: 5.21. Tips for Copy and Paste Between Windows
deferencing references: 41.5.4. References
defining, Python functions: 42.3.2. Functions
<defunct> status under System V: 24.12. Destroying Processes with kill
DEL character: 12.4. Show Nonprinting Characters with cat -v or od -c
delayed execution: 25.1. Building Software Robots the Easy Way
at command: 25.5. The at Command
cron system: 25.2. Periodic Program Execution: The cron Facility
sleep command: 25.9. Waiting a Little While: sleep
delete command (awk): 20.10.7. Alphabetical Summary of Commands
delete command (ex): 20.4. Useful ex Commands
delete (d or D) commands, sed editor: 34.17. The Deliberate Scrivener
multiline delete: 34.19. Multiline Delete
delete function (Perl): 41.5.3. Hashes
DELETE key: 5.8. Setting Your Erase, Kill, and Interrupt Characters
Emacs editor: 19.1. Emacs: The Other Editor
erase character: 37.8. Cleaning script Files
location for: 3.18. A .cshrc.$HOST File for Per Host Setup
redefined, debugging with xevBACKSPACE: 6.2. Using xev to Learn Keysym Mappings
delete script: 14.7. A Faster Way to Remove Files Interactively
deleted files, archiving on tape: 14.17. Deleting Stale Files
deleted text, recovering with vi editor: 17.7. Get Back What You Deleted with Numbered Buffers
deleting
characters from a file with dd: 21.6. Low-Level File Butchery with dd
d command, sed editor: 34.5. sed Addressing Basics
directories: 14.16. Problems Deleting Directories
duplicate lines: 21.20. What Is (or Isn't) Unique?
Perl script, using: 22.7. lensort: Sort Lines by Length
extra characters with ^: 30.5. My Favorite Is ^^
files: 1.11. Filenames
14.1. The Cycle of Creation and Destruction
(see also removing files)
-inum and -exec operators, using with find command: 9.9. Running Commands on What You Find
by last access date: 14.17. Deleting Stale Files
confirmation before deleting: 14.5. Answer "Yes" or "No" Forever with yes
with Emacs: 19.2. Emacs Features: A Laundry List
preventing by making directories unwritable: 14.4. Tricks for Making rm Safer
program for: 14.5. Answer "Yes" or "No" Forever with yes
RCS system: 39.5. RCS Basics
wildcards and: 14.3. rm and Its Dangers
files with nonprint characters in names: 8.12. Showing Nonprintable Characters in Filenames
function definitions: 29.11.5. Conclusion
linked files: 10.4.1. Differences Between Hard and Symbolic Links
unconnected symbolic links: 8.16. oldlinks: Find Unconnected Symbolic Links
deleting files, archiving deleted files with tar: 14.17. Deleting Stale Files
denial-of-service attacks (DoS): 48.2. CERT Security Checklists
48.5. What We Mean by DoS
comsuming all resources: 48.5. What We Mean by DoS
manipulation of configuration information: 48.5. What We Mean by DoS
physical attacks on equipment: 48.5. What We Mean by DoS
swap space vulnerability in: 48.6.2. Checking Swap Space
dependency conflicts in package installation/removal: 40.5.3. Choosing Packages for Installation or Removal
dereferencing operator (->): 41.4. Perl Boot Camp, Part 1: Typical Script Anatomy
deroff command: 16.9. Just the Words, Please
deroff w command: 16.4. Inside spell
desktops
display numbers: 47.7.1. Connecting to a Windows VNC server
Gnome and Enlightenment programs: 1.10. The Kernel and Daemons
rdesktop (RDP client for Unix): 47.9.2. rdesktop
sharing with VNC: 47.7. Sharing Desktops with VNC
connecting to Windows VNC server: 47.7.1. Connecting to a Windows VNC server
setting VNC up on Unix: 47.7.2. Setting up VNC on Unix
destroying processes with kill: 24.12. Destroying Processes with kill
/dev directory: 40.1. /usr/bin and Other Software Directories
43.1. Using Standard Input and Output
/dev/null file
examples: 35.15.2. Looping Until a Command Fails
36.27. Shell Lockfile
redirecting output to: 43.12. What Can You Do with an Empty File?
/dev/tty file: 43.3. Send (Only) Standard Error Down a Pipe
/dev/zero file: 43.12. What Can You Do with an Empty File?
device drivers: 44.1. Quick Introduction to Hardware
device drivers, resetting to kill processes: 24.18. Cleaning Up an Unkillable Process
"device independent" (DVI) printer language: 45.14. Printing Languages — PostScript, PCL, DVI, PDF
devices: 44.1. Quick Introduction to Hardware
dialup PPP session, setting up: 44.11. Setting Up a Dialup PPP Session
disk partitioning: 44.4. Disk Partitioning
filesystem types and /etc/fstab: 44.5. Filesystem Types and /etc/fstab
filesystems
removable, mounting/umounting: 44.6. Mounting and Unmounting Removable Filesystems
kernel boot output, reading: 44.2. Reading Kernel Boot Output
kernel configuration: 44.3. Basic Kernel Configuration
loopback mounts: 44.7. Loopback Mounts
modems: 44.10. Win Is a Modem Not a Modem?
network, configuring with ifconfig: 44.8. Network Devices — ifconfig
network filesystems, mounting: 44.9. Mounting Network Filesystems — NFS, SMBFS
not recognized by kernel: 44.2. Reading Kernel Boot Output
serial consoles: 44.14. Decapitating Your Machine — Serial Consoles
sound cards: 44.13. Dealing with Sound Cards and Other Annoying Hardware
Universal Serial Bus (USB), configuring: 44.12. USB Configuration
/dev/null file: 9.21. grepping a Directory Tree
grep command, using with: 9.22. lookfor: Which File Has That Word?
replacing log files with symbolic links to: 15.3. Save Space with "Bit Bucket" Log Files and Mailboxes
/dev/tty file: 36.15. Overview: Open Files and File Descriptors
df command: 26.1. Timing Is Everything
output, parsing with sed: 36.23.4. Using sed
DHCP (Dynamic Host Configuration Protocol): 46.10. Dynamic Host Configuration Protocol (DHCP)
NAT and: 46.11. Gateways and NAT
dialback script: 28.18.1. Dialback
dialup session, setting up: 44.11. Setting Up a Dialup PPP Session
dialup terminal type: 5.3. Setting the Terminal Type When You Log In
dictionaries
ispell program, adding words to: 16.5. Adding Words to ispell's Dictionary
spell program: 16.4. Inside spell
system word file: 16.3. How Do I Spell That Word?
dictionary files for spell command: 16.1. The Unix spell Command
dictionary order, sorting in: 22.6.4. Dictionary Order
dierctory hierarchy: 40.1. /usr/bin and Other Software Directories
diff command: 11.1. Checking Differences with diff
-c option
added lines, listing of: 11.3. Context diffs
changed lines, marking of: 11.3. Context diffs
deletions, listing of: 11.3. Context diffs
difference sections, marking of: 11.3. Context diffs
listings, start of: 11.3. Context diffs
running on lists of files: 28.17. Dealing with Too Many Arguments
-e option: 11.1. Checking Differences with diff
-u option
added lines, listing of: 11.3. Context diffs
changed lines, marking of: 11.3. Context diffs
deletions, listing of: 11.3. Context diffs
difference sections, marking of: 11.3. Context diffs
listings, start of: 11.3. Context diffs
batch editing, use in: 20.6. Change Many Files by Editing Just One
cmp program vs.: 11.7. cmp and diff
comparing sets of files: 10.9. Renaming, Copying, or Comparing a Set of Files
context diffs: 11.3. Context diffs
cvs: 39.7. CVS Basics
CVS, use with: 39.4. Managing and Sharing Files with RCS and CVS
diff3 script: 11.2. Comparing Three Different Versions with diff3
output, feeding to patch program: 20.9. patch: Generalized Updating of Files That Differ
r option: 10.9. Renaming, Copying, or Comparing a Set of Files
sdif command: 11.4. Side-by-Side diffs: sdiff
tabstops, problems with: 11.6. Problems with diff and Tabstops
dig command: 29.11.2. Functions with Loops: Internet Lookup
46.9. Domain Name Service (DNS)
DNS queries with: 46.3. Status and Troubleshooting
dircolors command
-p option: 8.6.2. Configuring It
LS_COLORS environment variable, setting: 8.6.2. Configuring It
dircolors command (GNU): 4.10. Highlighting and Color in Shell Prompts
.dircolorsrc file: 8.6.2. Configuring It
8.6.2. Configuring It
directories
!$ sequence: 30.3. My Favorite Is !$
absolute pathnames and: 31.2. Using Relative and Absolute Pathnames
aliases for: 29.5. Korn-Shell Aliases
archived on tape drives, restoring: 38.6.1. Restoring a Few Files
automatic setup for entering and exiting: 31.13. Automatic Setup When You Enter/Exit a Directory
backing up
excluding files from backup: 38.9. On-Demand Incremental Backups of a Project
browsing with shell arrays: 9.23. Using Shell Arrays to Browse Directories
changing: 31.5. Saving Time When You Change Directories: cdpath
31.12. Marking Your Place with a Shell Variable
changing with c (shell function): 31.10. cd by Directory Initials
comparing with diff -r command: 10.9. Renaming, Copying, or Comparing a Set of Files
contents of: 10.2. What's Really in a Directory?
counting files in: 16.6. Counting Lines, Words, and Characters: wc
current: 31.4. How Does Unix Find Your Current Directory?
(see also current directory)
current directory: 24.3. Managing Processes: Overall Concepts
deep directory tree, finding files in: 9.2. Delving Through a Deep Directory Tree
deleting: 14.16. Problems Deleting Directories
directory tree
archives/backups of: 38.2. tar in a Nutshell
changing permissions of: 50.5. Using chmod to Change File Permission
compressing: 15.7. Save Space: tar and compress a Directory Tree
15.9. Compressing a Directory Tree: Fine-Tuning
copying with tar and pipes: 10.13. Copying Directory Trees with tar and Pipes
grepping: 9.21. grepping a Directory Tree
skipping parts with find command: 9.27. Skipping Parts of a Tree in find
directory tree, duplicating: 9.17. Duplicating a Directory Tree
dirname command: 36.13.1. Introduction to basename and dirname
Emacs editor, viewing and manipulating in: 19.2. Emacs Features: A Laundry List
emacs hacks: 19.12. Directories for Emacs Hacks
files, finding: 8.1. Everything but the find Command
change and modification times: 8.2. The Three Unix File Times
oldest and newest with ls -t and ls -u: 8.3. Finding Oldest or Newest Files with ls -t and ls -u
subdirectories, listing with ls -R: 8.4. List All Subdirectories with ls -R
files in: 1.14. The Tree Structure of the Filesystem
finding files
GNU ls command, features of: 8.7. Some GNU ls Features
8.8. A csh Alias to List Recently Changed Files
listing directories with ls -d: 8.5. The ls -d Option
home: 1.15. Your Home Directory
finding (for anyone): 31.11. Finding (Anyone's) Home Directory, Quickly
linking: 10.7. Linking Directories
links to: 10.4.2. Links to a Directory
listing contents with ls -lai command: 10.4.1. Differences Between Hard and Symbolic Links
manual page files, searching for: 2.4. Searching Online Manual Pages
organization of: 7.1. What? Me, Organized?
access: 7.3. Access to Directories
bin directory for programs and scripts: 7.4. A bin Directory for Your Programs and Scripts
creating many: 7.7. Make More Directories!
creating new: 7.8. Making Directories Made Easier
naming files: 7.6. Naming Files
private or personal: 7.5. Private (Personal) Directories
ownership: 50.3. Who Will Own a New File?
permissions: 50.2. Tutorial on File and Directory Permissions
50.2. Tutorial on File and Directory Permissions
execute without read permission: 50.10. A Directory That People Can Access but Can't List
fully accessible directory within unreadable: 50.10. A Directory That People Can Access but Can't List
search access: 50.2.1. User, Group, and World
search permission: 50.2. Tutorial on File and Directory Permissions
sticky bit and: 50.4. Protecting Files with the Sticky Bit
printing files to: 28.4. Build Strings with { }
remotely mounted, hung terminals and: 5.6. Checklist: Terminal Hangs When I Log In
safer file deletion in: 14.8. Safer File Deletion in Some Directories
in search path: 27.6. Controlling Shell Command Searches
sharing local with SMB network: 47.2. Installing and Configuring Samba
sharing with SMB network: 47.6. Connecting to SMB Shares from Unix
subdirectories: 1.15. Your Home Directory
creating: 28.4. Build Strings with { }
temporary changes in: 43.7.2. Temporary Change of Directory and Environment
temporary, setting different for vi: 17.27. Out of Temporary Space? Use Another Directory
/u: 31.11. Finding (Anyone's) Home Directory, Quickly
write permission, denying to limit file creation: 15.5.2. Other Ideas
directory stack: 31.7. The Shells' pushd and popd Commands
clearing with dirs -c: 31.7. The Shells' pushd and popd Commands
clearing with popd command: 31.7. The Shells' pushd and popd Commands
directorys
moving to temporarily with pushd and popd commands: 31.7. The Shells' pushd and popd Commands
Dired mode (Emacs): 19.2. Emacs Features: A Laundry List
dirname command: 36.13. Using basename and dirname
bugs in: 36.13.1. Introduction to basename and dirname
loops, using with: 36.13.2. Use with Loops
dirs command: 31.7. The Shells' pushd and popd Commands
-c option, clearing the stack: 31.7. The Shells' pushd and popd Commands
output in prompt, using: 4.14. dirs in Your Prompt: Better Than $cwd
dirsfile variable for tcsh shells: 3.3. Shell Setup Files — Which, Where, and Why
disabling bash built-in commands: 27.9. Which One Will bash Use?
disk controllers: 44.1. Quick Introduction to Hardware
disk quotas: 50.14. Why Can't You Change File Ownership?
file permissions, changing without chown: 50.15. How to Change File Ownership Without chown
disk space
hard links vs. symbolic links: 31.13. Automatic Setup When You Enter/Exit a Directory
reports on: 15.8. How Much Disk Space?
swap space for temporary files: 48.6.2. Checking Swap Space
disk space, optimizing: 15.1. Disk Space Is Cheap
compressed tar archive: 38.2. tar in a Nutshell
compressing a directory tree: 15.7. Save Space: tar and compress a Directory Tree
fine-tuning: 15.9. Compressing a Directory Tree: Fine-Tuning
compressing files: 15.6. Compressing Files to Save Space
emptyig files: 15.2. Instead of Removing a File, Empty It
executable binaries, stripping: 15.10. Save Space in Executable Files with strip
limiting file sizes: 15.5. Limiting File Sizes
links and: 15.4. Save Space with a Link
log files and: 15.3. Save Space with "Bit Bucket" Log Files and Mailboxes
quotas on disk usage: 15.11. Disk Quotas
disks: 44.1. Quick Introduction to Hardware
partitioning: 44.4. Disk Partitioning
PCs: 44.4. Disk Partitioning
removable, mounting/unmounting: 44.6. Mounting and Unmounting Removable Filesystems
disown command: 23.11. Disowning Processes
vs. nohup: 23.11. Disowning Processes
disowned processes
controlling terminal and: 24.6. The Controlling Terminal
killing parent processes by name: 24.15. Killing Processes by Name?
display command, vis vs.: 28.11. Repeating a Time-Varying Command
DISPLAY environment variable: 3.14. Terminal Setup: Testing Environment Variables
35.5. Predefined Environment Variables
35.8. The DISPLAY Environment Variable
checking setting in xwrist script: 36.26. Outputting Text to an X Window
hard-coded into shell setup file on remote machine: 6.10.2. Starting a Remote Client with rsh and ssh
setting for remote X client: 6.10.1. Starting Remote X Clients from Interactive Logins
DISTDIR environment variable: 40.9. Installation with FreeBSD Ports
distributed database, updating: 11.11. Even More Uses for make
distributed denial-of-service attacks (DDoS): 48.5. What We Mean by DoS
distribution release for software packages: 40.6.1. Configuring the sources.list File
Distutils program: 42.2. Installation and Distutils
dmesg command, getting last ten lines from: 12.8. How to Look at the End of a File: tail
DNS (Domain Name Service)
cache, checking: 46.9. Domain Name Service (DNS)
NETBIOS name: 47.2. Installing and Configuring Samba
queries, making with dig: 46.3. Status and Troubleshooting
DNS MX (mail exchanger) record for a host, looking up: 29.11.2. Functions with Loops: Internet Lookup
do command (awk): 20.10.7. Alphabetical Summary of Commands
DocBook: 45.13. Formatting Markup Languages — troff, LATEX, HTML, and So On
doctor program: 19.13. An Absurd Amusement
documentation: 41.4. Perl Boot Camp, Part 1: Typical Script Anatomy
(see also (see also manual pages)
Perl: 41.1. High-Octane Shell Scripting
41.4. Perl Boot Camp, Part 1: Typical Script Anatomy
domains, NT: 47.2. Installing and Configuring Samba
Doman Name Service (see DNS)
DoS (see denial-of-service attacks)
dos2unix application: 40.1. /usr/bin and Other Software Directories
dot (.) (see ., Under Symbols)
dot (.) files
showing with ls -a option: 8.9. Showing Hidden Files with ls -A and -a
10.4.1. Differences Between Hard and Symbolic Links
wildcard matching and: 33.2. Filename Wildcards in a Nutshell
double quotes (see ", under Symbols)
27.12.2. How Quoting Works
doubled word typing errors, finding: 16.7. Find a a Doubled Word
downloading files from the Internet with wget: 40.7. Interruptable gets with wget
drive controllers
kernel boot output for: 44.2. Reading Kernel Boot Output
dselect tool: 40.5. Using Debian's dselect
access method, choosing: 40.5.1. Choosing the Access Method
choosing packages for installation or removal: 40.5.3. Choosing Packages for Installation or Removal
configuring packages: 40.5.6. Configuring Packages
exiting: 40.5.8. Exiting dselect
exiting select function: 40.5.4. Exiting the Select Function
installing packages: 40.5.5. Installing Packages
removing packages: 40.5.7. Removing Packages
updating information on available packages: 40.5.2. Updating Information on Available Packages
du command: 16.6. Counting Lines, Words, and Characters: wc
-k option: 15.8. How Much Disk Space?
-s option: 15.8. How Much Disk Space?
dump command
arguments, correct order for: 38.12. Getting tar's Arguments in the Right Order
industrial strength backups with: 38.14. Industrial Strength Backups
dumping files to the screen: 12.1. Cracking the Nut
cat command: 12.2. What Good Is a cat?
duplicate lines, deleting: 21.20. What Is (or Isn't) Unique?
22.6.1. Dealing with Repeated Lines
Perl script, using: 22.7. lensort: Sort Lines by Length
DVD-ROMs: 44.6. Mounting and Unmounting Removable Filesystems
DVI ("device independent") printer language: 45.14. Printing Languages — PostScript, PCL, DVI, PDF
DVORAK keyboards: 6.1. Defining Keys and Button Presses with xmodmap
6.1. Defining Keys and Button Presses with xmodmap
dynamic expansion in Emacs: 19.6. Command Completion
Dynamic Host Configuration Protocol (DHCP): 46.10. Dynamic Host Configuration Protocol (DHCP)
dynamic IP addresses: 46.1.1. Internet Protocol (IP)
dynamic prompts: 4.3. Dynamic Prompts
simulating: 4.4. Simulating Dynamic Prompts


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