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## Index: I

i/I commands: 2.4.2. Entering and Changing Text
if statement: 5.1. if/else
  6.2.3. Arithmetic Variables and Assignment
  6.5.2. String Formatting Options
  I/O redirection and: 7.2.3.2. I/O redirection and multiple commands
  syntax for: 5.1. if/else
IFS variable: 4.2.1. Positional Parameters
  4.2.1.1. Positional parameters in functions
  7.3. Command-Line Processing
  read command and: 7.2.3. read
  role in command-line processing: 7.3.2. Substitution Order
ignoreeof option: 3.3. Options
  customizations and: 10.2.3. Types of Global Customization
indexed arrays: 6.4.1. Indexed Arrays
indirect variable references: 4.4. Indirect Variable References (namerefs)
input (see entries at I/O)
input mode: 2.4. Vi Editing Mode
  entering: 2.4.2. Entering and Changing Text
INT signal: 8.3.1. Control-Key Signals
  8.4.2. Process ID Variables and Temporary Files
  trap on: 8.4.1. Traps and Functions
integer comparison operators: 5.1.4.4. Arithmetic conditionals
internal field separator (see IFS variable)
Internet: 7.1.1. Here-Documents
interprocess communication (IPC): 8.3. Signals
invocation options: B.1. Invocation Options
I/O: 1.7. Input and Output
  background jobs and: 1.8.1. Background I/O
  break conditions and: 9.2.3.4. Break conditions
  file redirection and: 6.2.3. Arithmetic Variables and Assignment
  two-way pipes and: 8.5.4. Coroutines with Two-Way Pipes
I/O redirection: 1.7.2. I/O Redirection
  7.1. I/O Redirectors
  order of in command-line processing: 7.3.2. Substitution Order
  restricted shell and: 10.4.2. Restricted Shell
  to code blocks: 7.2.3.3. Code blocks
  to multiline flow-control constructs: 7.2.3.2. I/O redirection and multiple commands
  to/from file descriptors for: 7.1. I/O Redirectors
    7.1.3. File Descriptors
    7.2.3.4. Reading user input
    7.2.3.5. Options to read
  with exec statement: 9.2.1.2. exec

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