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## Index: Z

.Z file extension (compress program): 15.6. Compressing Files to Save Space
Z shell (see zsh)
zap script (interactively killing processes): 24.16.2. zap
zcat command: 15.6. Compressing Files to Save Space
ZDOTDIR environment variable: 3.3. Shell Setup Files — Which, Where, and Why
  3.3. Shell Setup Files — Which, Where, and Why
zero string length, testing for: 35.30. Using Shell Functions in Shell Scripts
zeros in /dev/zero file: 43.12. What Can You Do with an Empty File?
Zip disks
  backing up to: 38.5.3. Backing Up to Floppies or Zip Disks
  mounting: 44.6. Mounting and Unmounting Removable Filesystems
zless command (less for compressed files): 15.6. Compressing Files to Save Space
.zlogin file: 3.3. Shell Setup Files — Which, Where, and Why
zmore script: 35.17. Trapping Exits Caused by Interrupts
  arguments for: 35.20.1. With the "$@" Parameter
  for loops in: 35.21. Handling Command-Line Arguments with a for Loop
zombies: 24.7.2. BSD
  24.12. Destroying Processes with kill
  24.19. Why You Can't Kill a Zombie
.zprofile file: 3.3. Shell Setup Files — Which, Where, and Why
zsh (Z shell): 1.6. There Are Many Shells
  3.3. Shell Setup Files — Which, Where, and Why
  27.1. What the Shell Does
  { } (pattern-expansion characters), building strings with: 28.4. Build Strings with { }
  aliases: 29.2. Introduction to Shell Aliases
    29.4. Setting and Unsetting Bourne-Type Aliases
    29.6. zsh Aliases
  &! and &| operators for background processes: 23.11. Disowning Processes
  arrays: 9.23.1. Using the Stored Lists
    expanding ranges: 9.23.2. Expanding Ranges
  bg_nice option: 24.20. The Process Chain to Your Window
  built-in arithmetic: 29.11.4. Functions Calling Functions: Factorials
  cd +n and cd -n commands, moving directory in stack: 31.7. The Shells' pushd and popd Commands
  command-line editing: 30.14.6. zsh Editing
  completion features: 28.6. Automatic Completion
    command-specific: 28.6.3. Command-Specific Completion
  configuration files: 3.3. Shell Setup Files — Which, Where, and Why
  disown command: 23.11. Disowning Processes
  editing history substitutions: 28.5. String Editing (Colon) Operators
  environment variable for shell function, changing: 29.12. Shell Function Specifics
  exit status of command line, reversing: 35.12. Exit Status of Unix Processes
  fc -l command, listing previous commands with: 30.7. History by Number
  foreach loop: 28.9.1. A foreach Loop
  FPATH search path for shell functions: 29.13.2.2. zsh
  globbing (wildcard expansion): 33.2. Filename Wildcards in a Nutshell
  histchars variable: 30.15. Changing History Characters with histchars
  history file: 30.12.1. bash, ksh, zsh
  limiting file size: 15.5.1. limit and ulimit
  login shells, creating: 3.19. Making a "Login" Shell
  MULTIOS option: 43.8. Send Output Two or More Places
  options, resetting for shell functions: 29.12. Shell Function Specifics
  passing command history to: 30.13. Pass History to Another Shell
  pre-prompt commands: 4.16. Preprompt, Pre-execution, and Periodic Commands
  PRINT_EXIT_VALUE option: 35.12. Exit Status of Unix Processes
  prompts
    %!, getting history number with: 4.3. Dynamic Prompts
    dynamic: 4.4. Simulating Dynamic Prompts
    right-side: 4.11. Right-Side Prompts
    secondary, showing names of continuing constructs: 28.12. Multiline Commands, Secondary Prompts
    setting: 4.2. Static Prompts
  redirecting standard I/O: 43.1. Using Standard Input and Output
  repeating commands with repeat loop: 28.8. Repeating Commands
  SAVEHIST variable: 30.12. Picking Up Where You Left Off
  shell variables, read-only: 35.9. Shell Variables
  SHLVL environment variable: 4.12. Show Subshell Level with $SHLVL
  special characters/operators: 27.17. "Special" Characters and Operators
  wildcards, failing to match: 33.4. What if a Wildcard Doesn't Match?
.zshenv file: 3.3. Shell Setup Files — Which, Where, and Why
.zshrc file: 3.3. Shell Setup Files — Which, Where, and Why
  4.6. Faster Prompt Setting with Built-ins
  4.16. Preprompt, Pre-execution, and Periodic Commands

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