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Index: D
- daemons
: 1.14. The Kernel and Daemons 
- 
  - controlling terminal and
: 38.6. The Controlling Terminal 
  - restarting with the kill command
: 38.11. Printer Queue Watcher: A Restartable Daemon Shell Script
 
- dashes
: (see - (hyphen))
- databases
- 
  - created using awk
: 48.10. Working with Names and Addresses 
  - index program for creating
: 48.11. The index Database Program 
  - searching
: 17.19. Finding Files (Much) Faster with a find Database 
 
- date
: (see time)
- date command
- 
  - 7.12. External Commands Send Signals to Set Variables 
  - 16.16. Picking a Unique Filename Automatically 
  - 21.14. Automatically Appending the Date to a Filename 
  - 51.10. The date Command 
  - 52.4. Quick Descriptions of What's on the Disc 
  - cal program using
: 48.7. cal That Marks Today's Date 
  - examples
: 51.10. The date Command 
 
- day-of-month in crontab entries
: 40.12.1. Execution Scheduling 
- dbm files
: 24.18. Huge Files Might Not Take a Lot of Disk Space 
- dc program
- 
  - 49.1. bc: Simple Math at the Shell Prompt 
  - (see also calculators)
 
- DCL
: (see VAX/VMS command language)
- dd command
- 
  - 35.6. Low-Level File Butchery with dd 
  - 52.4. Quick Descriptions of What's on the Disc 
  - performance and
: 20.6. Writing a Tape Drive on a Remote Machine 
  - restoring from remote tape drives
: 20.5. Using tar to a Remote Tape Drive 
 
- dd utility
- 
  - 35.12. Converting Between ASCII and EBCDIC 
  - 35.13. Other Conversions with dd 
 
- dead processes
: (see zombies)
- debugging
- 
  - 44.9. Testing Your Success 
  - (see also errors; standard error)
  - Bourne shell scripts
  
- 
    - 44.8. Test Exit Status with the if Statement 
    - 46.1. Tips for Debugging Shell Scripts 
  
 
- echo command used for
: 46.2. Quoting Trouble?  Think, Then Use echo 
  - output
  
- 
    - 46.1.1. Use -xv 
    - (see also standard output)
  
 
- piping to pager
: 46.1.1. Use -xv 
 
- debugging output
: 46.1.1. Use -xv 
- decimals, ASCII character conversion
: 45.11. The Multipurpose jot Command 
- decryption
: (see encryption)
- <defunct> status under System V
: 38.10. Destroying Processes with kill 
- DEL (to interrupt)
: 41.2.1. How We Made It This Far (Back?) 
- del script
- 
  - 23.6. A Faster Way to Remove Files Interactively 
  - 52.4. Quick Descriptions of What's on the Disc 
 
- DELETE
: 41.2.2. Handling Most Characters 
- delete command
: 52.4. Quick Descriptions of What's on the Disc 
- delete command (awk)
: 33.11.7. Alphabetical Summary of Commands 
- delete command (ex)
: 33.4. Useful ex Commands 
- DELETE key
- 
  - deleting on command line
: 9.2. Fix a Line Faster with Line-Kill and Word-Erase 
  - erase character
: 51.6. Cleaning script Files 
  - location for
: 2.13. A .cshrc.$HOST File for Per Host Setup 
 
- delete script
: 23.9. delete: Protecting Files from Accidental Deletion 
- deleting
- 
  - directories
  
- 
    - 23.17. Problems Deleting Directories 
    - 23.18. How Making and Deleting Directories Works 
    - 50.12. Common UNIX Error Messages 
  
 
- errors caused by
: 50.12. Common UNIX Error Messages 
  - files
  
- 
    - 1.15. Filenames 
    - 21.11. Safer Removing, Moving, and Copying 
    - 23.2. rm and Its Dangers 
    - 23.5. Remove Some, Leave Some 
    - 23.10. Deletion with Prejudice: rm -f 
    - 45.10. Removing a File Once It's Opened - for Security and Easy Cleanup
    - "by
: 23.21. Removing Every File but One 
    - by last access date
: 23.20. Deleting Stale Files 
    - emptying files instead of
: 24.1. Instead of Removing a File, Empty It 
    - find command and
: 23.22. Using find to Clear Out Unneeded Files 
    - by i-number
: 23.16. Removing a Strange File by its I-number 
    - interactively
: 23.6. A Faster Way to Remove Files Interactively 
    - safeguards against
    
- 
      - 20.13. SCCS Basics 
      - 21.11. Safer Removing, Moving, and Copying 
      - 23.7. Safer File Deletion in Some Directories 
      - 23.9. delete: Protecting Files from Accidental Deletion 
    
 
- with special filename characters
: 23.11. Deleting Files with Odd Names 
    - with unlink command
: 23.15. Using unlink to Remove a File with a Strange Name 
  
 
- man pages
: 23.19. Deleting (BSD) Manual Pages that Aren't Read 
  - whitespace
  
- 
    - 25.9. Adding and Deleting White Space 
    - 25.13. pushin: Squeeze Out Extra White Space 
  
 
- wildcards and
: 23.2. rm and Its Dangers 
 
- delta command (SCCS)
: 20.13. SCCS Basics 
- deroff command
: 29.10. Just the Words, Please 
- detaching sessions
: 3.7. Detaching a Session with screen 
- /dev directory
: 13.1. Using Standard Input and Output
- 
  - /dev/tty file
  
- 
    - examples
: 47.2.1.1. Writing Files 
  
 
- /dev/null file
  
- 
    - examples
    
- 
      - 44.10.2. Looping Until a Command Fails 
      - 45.36. Shell Lockfile 
    
 
 
- /dev/null file
  
- 
    - 13.14. What Can You Do with an Empty File? 
    - 13.15. What to Do with a Full Bit Bucket :-) 
  
 
- /dev/tty file
: 13.3. Send (only) Standard Error Down a Pipe 
  - /dev/zero file
: 13.14. What Can You Do with an Empty File? 
 
- device drivers, resetting
: 38.15. Cleaning Up an Unkillable Process 
- device numbers
: 17.22. Finding the Links to a File 
- df command
- 
  - 17.22. Finding the Links to a File 
  - 24.9. How Much Disk Space? 
  - 52.4. Quick Descriptions of What's on the Disc 
  - examples
: 45.30.4. Using sed 
 
- dialback script
: 9.26.1. Dialback 
- dictionary files
: 29.1. The UNIX spell Command 
- 
  - adding to
: 29.5. Adding Words to ispell's Dictionary 
 
- diff command
- 
  - 2.14. motd.diff: Show New Lines in Login Messages
  - 28.1. Checking Differences with diff 
  - 52.4. Quick Descriptions of What's on the Disc 
  - (see also bdiff command; ediff command)
  - -c option
: 28.3. Context diffs 
  - -e option
  
- 
    - 28.1. Checking Differences with diff 
    - 28.9. ex Scripts Built by diff 
  
 
- example
: 33.6. Change Many Files by Editing Just One 
  - -f option
: 16.22. Comparing Two Directory Trees with dircmp 
  - -h option
: 28.7. diff for Very Long Files: bdiff 
  - -t option
: 28.10. Problems with diff and Tabstops 
 
- diff3 script
- 
  - 28.2. Comparing Three Different Versions with diff3 
  - 52.4. Quick Descriptions of What's on the Disc 
 
- diffmk command
: 28.15. Show Changes in a troff File with diffmk 
- dir_path script
- 
  - 16.21. Finding All Directories with the Same Name 
  - 52.4. Quick Descriptions of What's on the Disc 
 
- dircmp command
: 16.22. Comparing Two Directory Trees with dircmp 
- directories
: 23.18. How Making and Deleting Directories Works 
- 
  - !$ sequence and
: 11.3. My Favorite Is !$ 
  - absolute pathnames and
: 14.2. Using Relative and Absolute Pathnames 
  - access to
: 1.25. Access to Directories 
  - advantages of
: 4.7. Make More Directories! 
  - archives/backups of
  
- 
    - 20.1. tar in a Nutshell 
    - 20.8.1. Including Other Directories 
  
 
- automatic setup of
: 14.14. Automatic Setup When You Enter/Exit a Directory 
  - CD-ROM packages
: 52.5.3.1. Directory Structure 
  - changing
: 14.5. Saving Time When You Change Directories: cdpath 
  - copying/moving files to
: 21.12. Copying Files to a Directory 
  - creating
: 4.8. Making Directories Made Easier 
  - current
  
- 
    - 10.9. Shell Functions 
    - 14.3. What Good Is a Current Directory? 
    - 14.4. How Does UNIX Find Your Current Directory? 
    - 14.13. Which Directory Am I in, Really? 
  
 
- current working
: 38.3. Managing Processes: Overall Concepts 
  - deleting
  
- 
    - 23.17. Problems Deleting Directories 
    - 50.12. Common UNIX Error Messages 
  
 
- directory stack
: 14.6. The Shells' pushd and popd Commands 
  - emacs hacks
: 4.4. Directories for Emacs Hacks 
  - file representation in
: 18.2. What's Really in a Directory 
  - files in
: 1.19. The Tree Structure of the Filesystem 
  - finding
: 14.10. Variables Help You Find Directories and Files 
  - home
  
- 
    - 1.20. Your Home Directory 
    - 14.11. Finding (Anyone's) Home Directory, Quickly 
    - (see home directories)
  
 
- linking
: 18.7. Linking Directories 
  - links to
: 18.4.2. Links to a Directory 
  - listing at top of screen
: 21.10. Keep a Directory Listing at Top of the Screen: dirtop 
  - listing contents of
: 16.8. The ls -d Option 
  - matching with wildcards
: 15.10. Wildcards that Match Only Directories 
  - names of
: 45.18.1. Introduction to basename and dirname 
  - notification of change to
: 21.8.1.3. Watching Directories 
  - ownership
  
- 
    - 22.2.1. User, Group, and World 
    - 22.3. Who Will Own a New File? 
  
 
- parsing from pathnames
: 16.17. Getting Directory Name from a File's Pathname 
  - permissions
  
- 
    - 21.14. Automatically Appending the Date to a Filename 
    - (see permissions)
  
 
- printing files to
: 9.5. Build Strings with { } 
  - private
  
- 
    - 4.5. Private (Personal) Directories 
    - 4.7. Make More Directories! 
  
 
- redundantly named
: 16.21. Finding All Directories with the Same Name 
  - remotely mounted
: 5.6. Checklist: Terminal Hangs When I Log In 
  - root
: (see root directory)
  - safer file deletion in
: 23.7. Safer File Deletion in Some Directories 
  - in search path
: 8.7. Setting Your Search Path 
  - subdirectories
: 1.20. Your Home Directory 
  
- 
    - creating
: 9.5. Build Strings with { } 
    - links in
: 18.4.2. Links to a Directory 
    - listing with ls -R
: 16.4. List All Subdirectories with ls -R 
  
 
- on tape drives
: 20.4.1. Restoring a Few Files 
  - temporary files
: (see /tmp directory)
  - temporary changes in
: 13.7.2. Temporary Change of Directory and Environment 
  - trees of
  
- 
    - 16.19. stree: Simple Directory Tree 
    - 16.22. Comparing Two Directory Trees with dircmp 
    - 16.23. Comparing Filenames in Two Directory Trees 
    - (see trees, directory)
    - find command and
: 17.2. Delving Through a Deep Directory Tree 
  
 
- trimming
: 24.15. Trimming a Directory 
 
- "directory not empty" error message
: 50.12. Common UNIX Error Messages 
- directory stacks
: 14.6. The Shells' pushd and popd Commands 
- 
  - in arrays
: 47.5. Using C Shell Arrays 
 
- directory structure
: 52.5.3.1. Directory Structure 
- dirname command
- 
  - 16.17. Getting Directory Name from a File's Pathname 
  - 45.18. Using basename and dirname 
  - 52.4. Quick Descriptions of What's on the Disc 
  - bugs in
: 45.18.1. Introduction to basename and dirname 
  - examples
: 45.18. Using basename and dirname 
  - loops using
: 45.18.2. Use with Loops 
 
- dirs command
- 
  - 14.6. The Shells' pushd and popd Commands 
  - 14.13. Which Directory Am I in, Really? 
  - output in prompt setting
: 7.11. dirs in Your Prompt: Better than $cwd 
 
- dirtop script
- 
  - 21.10. Keep a Directory Listing at Top of the Screen: dirtop 
  - 52.4. Quick Descriptions of What's on the Disc 
 
- disk bandwidth issues
- 
  - forms
: 39.12.3. The I/O Subsystem 
 
- disk quotas
- 
  - 22.20. Why Can't You Change File Ownership Under BSD UNIX?
  - 24.17. Disk Quotas 
 
- disk space
- 
  - compressed files and
: (see compressed files)
  - emptyig files and
: 24.1. Instead of Removing a File, Empty It 
  - hard links vs. symbolic links
: 14.14. Automatic Setup When You Enter/Exit a Directory 
  - links and
: 24.4. Save Space with a Link 
  - log files and
: 24.2. Save Space with Bit Bucket Log Files and Mailboxes
  - memory contention
: 39.12.2. The Memory Subsystem 
  - reports on
: 24.9. How Much Disk Space? 
  - strip command and
: 24.13. Save Space in Executable Files with strip 
  - trimming directories and
: 24.15. Trimming a Directory 
  - unlinking open files and
: 24.3. Unlinking Open Files Isn't a Good Idea 
  - vtree program and
: 16.20. The vtree Visual Directory Tree Programs 
 
- DISPLAY environment variable
- 
  - 2.12. Automatic Setups for Different Terminals 
  - 6.3. Predefined Environment Variables 
 
- display, vis compared to
: 51.7. When You Get Impatient 
- ditroff program
: 43.13. The Text Formatters nroff, troff, ditroff, ... 
- do command (awk)
: 33.11.7. Alphabetical Summary of Commands 
- doctor program
: 32.13. An Absurd Amusement 
- documentation
: (see manual pages)
- dollar sign
: (see $)
- done command
: 50.3. apropos on Systems Without apropos 
- dot
: (see .)
- dot files
: 16.11. Showing Hidden Files with ls -A and -a 
- 
  - matching with wildcards
: 15.5. Matching All "Dot Files" with Wildcards
 
- double quotes
: (see ")
- double-spacing text
: 25.12. Double Space, Triple Space ... 
- doublespace script
: 52.4. Quick Descriptions of What's on the Disc 
- Dougherty, Dale
: 1.7. Power Grows on You 
- du command
- 
  - 24.9. How Much Disk Space? 
  - 52.4. Quick Descriptions of What's on the Disc 
 
- dump utility
: 1.23. File Access Permissions 
- dup, file descriptors
: 47.2.1.1. Writing Files 
- duplicate lines, deleting
- 
  - 35.20. Quick Reference: uniq 
  - 36.6. Miscellaneous sort Hints 
 
- DVI format documentation
: 52.5.3.4. Installing a Single Program 
Symbols
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Copyright © 1998
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