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Index: I

-i command option, for inplace editing : 17.5. Variable-Length ( Text) Databases

-i flag (ignore case)

7.4.2. Ignoring Case

7.5. Substitutions

if modifier : 9.5. Expression Modifiers

if statement : 4.2. The if/unless Statement

example of

1.5.9. Making It a Bit More Modular

1.5.17. The Final Programs

4.2. The if/unless Statement

5.4.1. The keys Function

introduced : 1.5.3. Adding Choices

not counting as looping block : 9.2. The next Statement

unless modifier

9.5. Expression Modifiers

10.3. A Slight Diversion: die

IGNORE value (%SIG) : 14.6. Sending and Receiving Signals

ignoring case

example of : 1.5.7. Handling Varying Input Formats

in substitution : 7.5. Substitutions

with i flag : 7.4.2. Ignoring Case

import tags : 19.5. Less Typing

indentation, in Perl programs : 1.4. Basic Concepts

index( ) operator : 15.1. Finding a Substring

third parameter of : 15.1. Finding a Substring

indirect filehandles : 12.2. Globbing

infinite loops : 9.3. The redo Statement

inplace editing : 17.5. Variable-Length ( Text) Databases

int( ) operator : 10.5. The -x File Tests

integers

2.2.1. All Numbers Use the Same Format Internally

2.2.3. Integer Literals

interpreted language, Perl as a : 1.4. Basic Concepts

interprocess communication, with signals : 14.6. Sending and Receiving Signals

invoking a format : 11.3. Invoking a Format

invoking a subroutine : 8.2. Invoking a User Function

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