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## Index: Symbols & Numbers

& (ampersand)
  AND operator: 4.4.1. Operators
    5.4.1.3. Bitwise and logical operators
  background commands: 4.2.4. Command Forms
  ex command: 9.2. Alphabetical Summary of ex Commands
  metacharacter: 6.3.2. Replacement Patterns
  && AND operator: 4.2.4. Command Forms
    4.4.1. Operators
    5.4.1.3. Bitwise and logical operators
    11.5. Operators
  &= assignment operator: 4.4.1. Operators
    5.4.1.1. Assignment operators
* (asterisk)
  filename metacharacter: 4.2.2. Filename Metacharacters
    4.2.2. Filename Metacharacters
  metacharacter: 6.3.1. Search Patterns
  multiplication operator: 4.4.1. Operators
    5.4.1.2. Arithmetic operators
    11.5. Operators
  ** exponentiation operator: 11.5. Operators
  *= assignment operator: 4.4.1. Operators
    5.4.1.1. Assignment operators
    11.5. Operators
@ (at sign)
  csh command: 5.8. Built-in C Shell Commands
  filename metacharacter: 4.2.2. Filename Metacharacters
\ (backslash)
  filename metacharacter: 4.2.2. Filename Metacharacters
  metacharacter: 6.3.1. Search Patterns
  quoting in csh: 5.2.3. Quoting
  quoting in sh and ksh: 4.2.3. Quoting
! (bang)
  ex command: 9.2. Alphabetical Summary of ex Commands
  filename metacharacter: 4.2.2. Filename Metacharacters
    4.2.2. Filename Metacharacters
  negation in sed: 10.3.1. Pattern Addressing
  negation operator: 4.4.1. Operators
    5.4.1.3. Bitwise and logical operators
  bang= inequality operator: 4.4.1. Operators
    5.4.1.4. Comparison operators
  =~ string inequality: 5.4.1.4. Comparison operators
    11.5. Operators
{} (braces)
  groups of commands: 4.2.4. Command Forms
  metacharacter: 6.3.1. Search Patterns
[] (brackets)
  filename metacharacter: 4.2.2. Filename Metacharacters
  metacharacters: 6.3.1. Search Patterns
  [[ ]] command (ksh): 4.9. Built-in Commands (Bourne and Korn Shells)
^ (caret)
  exclusive OR operator: 4.4.1. Operators
    5.4.1.3. Bitwise and logical operators
  exponentiation operator: 11.5. Operators
  metacharacter: 6.3.1. Search Patterns
    6.3.1. Search Patterns
  ^= assignment operator: 4.4.1. Operators
    5.4.1.1. Assignment operators
    11.5. Operators
: (colon)
  csh command: 5.8. Built-in C Shell Commands
  sed command: 10.5. Alphabetical Summary of sed Commands
    10.5. Alphabetical Summary of sed Commands
  sh and ksh command: 4.9. Built-in Commands (Bourne and Korn Shells)
, (comma) operator: 4.4.1. Operators
$ (dollar sign)
  built-in shell variables: 4.3.2. Built-in Shell Variables
  field reference operator: 11.5. Operators
  metacharacter: 6.3.1. Search Patterns
. (dot) metacharacter: 6.3.1. Search Patterns
= (equal sign)
  assignment operator: 4.4.1. Operators
    5.4.1.1. Assignment operators
    11.5. Operators
  equality operator: 11.5. Operators
  ex command: 9.2. Alphabetical Summary of ex Commands
  sed command: 10.5. Alphabetical Summary of sed Commands
  == inequality operator: 11.5. Operators
  =~ string equality: 5.4.1.4. Comparison operators
# (hash mark)
  for comments: 4.9. Built-in Commands (Bourne and Korn Shells)
    5.8. Built-in C Shell Commands
    10.5. Alphabetical Summary of sed Commands
  #! command: 4.9. Built-in Commands (Bourne and Korn Shells)
    5.8. Built-in C Shell Commands
    4.9. Built-in Commands (Bourne and Korn Shells)
    5.8. Built-in C Shell Commands
- (hyphen)
  subtraction operator: 4.4.1. Operators
    5.4.1.2. Arithmetic operators
    11.5. Operators
  -= assignment operator: 4.4.1. Operators
    5.4.1.1. Assignment operators
    11.5. Operators
  -- auto-decrement operator: 4.4.1. Operators
    5.4.1.1. Assignment operators
    11.5. Operators
< (left angle bracket)
  ex command: 9.2. Alphabetical Summary of ex Commands
  less than operator: 4.4.1. Operators
    5.4.1.4. Comparison operators
    11.5. Operators
  redirection operator: 4.2.5.1. Simple redirection
  <& (file descriptor): 4.2.5.2. Redirection using file descriptors
  << redirection operator: 4.2.5.1. Simple redirection
  <<= assignment operator: 4.4.1. Operators
  <> redirection operator: 4.2.5.1. Simple redirection
  <= less than or equal operator: 4.4.1. Operators
    5.4.1.4. Comparison operators
    11.5. Operators
  << bitwise shift operator: 4.4.1. Operators
    5.4.1.3. Bitwise and logical operators
( ) (parentheses) for grouping commands: 4.2.4. Command Forms
% (percent)
  metacharacter: 6.3.2. Replacement Patterns
  modulus operator: 4.4.1. Operators
    5.4.1.2. Arithmetic operators
    11.5. Operators
  %= assignment operator: 4.4.1. Operators
    5.4.1.1. Assignment operators
    11.5. Operators
. (period) metacharacter: 6.3.1. Search Patterns
+ (plus sign)
  addition operator: 4.4.1. Operators
    5.4.1.2. Arithmetic operators
    11.5. Operators
  filename metacharacter: 4.2.2. Filename Metacharacters
  += assignment operator: 4.4.1. Operators
    5.4.1.1. Assignment operators
    11.5. Operators
  ++ auto-increment operator: 4.4.1. Operators
    5.4.1.1. Assignment operators
    11.5. Operators
? (question mark)
  filename metacharacter: 4.2.2. Filename Metacharacters
  ?: inline conditional evaluation: 4.4.1. Operators
    11.5. Operators
" (quotation marks): 4.2.3. Quoting
> (right angle bracket)
  ex command: 9.2. Alphabetical Summary of ex Commands
  greater than operator: 4.4.1. Operators
    5.4.1.4. Comparison operators
    11.5. Operators
  redirection operator: 4.2.5.1. Simple redirection
  >& (file descriptor): 4.2.5.2. Redirection using file descriptors
  >> redirection operator: 4.2.5.1. Simple redirection
  >>= assignment operator: 4.4.1. Operators
  >= greater than or equal operator: 4.4.1. Operators
    5.4.1.4. Comparison operators
    11.5. Operators
  >> bitwise shift operator: 4.4.1. Operators
    5.4.1.3. Bitwise and logical operators
; (semicolon) for command sequences: 4.2.4. Command Forms
/ (slash)
  division operator: 4.4.1. Operators
    5.4.1.2. Arithmetic operators
    11.5. Operators
  /= assignment operator: 4.4.1. Operators
    5.4.1.1. Assignment operators
    11.5. Operators
~ (tilde)
  binary inversion operator: 5.4.1.3. Bitwise and logical operators
  ex command: 9.2. Alphabetical Summary of ex Commands
  filename metacharacter: 4.2.2. Filename Metacharacters
  metacharacter: 6.3.2. Replacement Patterns
  negation operator: 4.4.1. Operators
    11.5. Operators
| (vertical bar)
  OR operator: 4.4.1. Operators
    5.4.1.3. Bitwise and logical operators
  redirecting command output: 4.2.4. Command Forms
  |= assignment operator: 4.4.1. Operators
    5.4.1.1. Assignment operators
  || OR operator: 4.2.4. Command Forms
    4.4.1. Operators
    5.4.1.3. Bitwise and logical operators
    11.5. Operators

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