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Index: E

-e file test operator : 2.5.10. Named Unary and File Test Operators

/e modifier : 2.4.2. Pattern-Matching Operators

-e switch, perl : 6.1.2. Switches

each function

3.2.30. each
5.4.3. Tying Hashes

editor support for debugger : 8.1.5. Editor Support for Debugging

effective gid : (see $ variables, $) variable)

effective uid : (see $ variables, $< variable)

$EFFECTIVE_GROUP_ID : (see $ variables, $) variable)

$EFFECTIVE_USER_ID : (see $ variables, $> variable)

efficiency : (see performance)

$EGID : (see $ variables, $) variable)

else statement : (see if statements)

elsif statement : (see if statements)

Emacs, debugger and : 8.1.5. Editor Support for Debugging

enablecache() routine : 7.2.4. Benchmark - Check and Compare Running Times of Code

encapsulation : 4.3.4. Using Object Methods

encryption

3.2.22. crypt
6.3.2.2. Penguin

end of file : 3.2.31. eof

END subrountine : 5.1.2. Package Constructors and Destructors: BEGIN and END

__END__ token

2.3.2.7. Other literal tokens
2.9.5. Global Special Filehandles

endgrent function : 3.2.44. getgrent

endhostent function : 3.2.49. gethostent

ending : (see terminating)

endless loop : (see infinite loops)

endprotoent function : 3.2.60. getprotoent

endpwent function : 3.2.61. getpwent

endservent function : 3.2.66. getservent

English module

7.2.76. vars - Predeclare Global Variable Names
8.2.3. Awk Traps

%ENV hash : 2.9.4. Global Special Arrays

deleting from : 3.2.26. delete

Env module : 7.2.14. Env - Import Environment Variables

environment variables : 2.9.4. Global Special Arrays

importing : 7.2.14. Env - Import Environment Variables
PERL5DB : 8.1.3. Debugger Customization
PERL_DESTRUCT_LEVEL : 5.3.9. A Note on Garbage Collection
PWD : 7.2.7. Cwd - Get Pathname of Current Working Directory

eof function

3.2.31. eof
8.3.1. Time Efficiency

eq operator : 8.2.1. Universal Blunders

equal sign : (see = (equal sign))

equal to (=) operator : 2.5.12. Equality Operators

equality operators : 2.5.12. Equality Operators

erasing : (see deleting)

$ERRNO : (see $ variables, $! variable)

error messages

7.2.5. Carp - Generate Error Messages
8.3.6. User Efficiency
8.4. Programming with Style
9. Diagnostic Messages

errors : 9. Diagnostic Messages

$@ variable for : 2.9.3. Global Special Variables
$! variable for : 2.9.3. Global Special Variables
$? variable for : 2.9.3. Global Special Variables
handling permissions for processes : 7.2.40. IPC::Open3 - Open a Process for Reading, Writing, and Error Handling

escape sequences for control characters : 2.3.2.2. String literals

/etc/group file

3.2.44. getgrent
8.3.1. Time Efficiency

/etc/hosts file : 3.2.49. gethostent

/etc/networks file : 3.2.53. getnetent

/etc/passwd file

3.2.61. getpwent
8.3.1. Time Efficiency

/etc/services file : 3.2.66. getservent

/etc/utmp file : 3.2.50. getlogin

$EUID : (see $ variables, $> variable)

eval function

3.2.32. eval
4. References and Nested Data Structures
8.3.1. Time Efficiency
die function and : 3.2.27. die
loops and : 8.3.1. Time Efficiency
translating with variables : 2.4.2. Pattern-Matching Operators

$EVAL_ERROR : (see $ variables, $@ variable)

examples, Perl : 8.5.2. Examples

exceptions, die function for : 3.2.27. die

exclamation point : (see ! (bang))

exclusive OR operator

2.5.13. Bitwise Operators
2.5.20. Logical and, or, not, and xor
8.2.3. Awk Traps

exec function : 3.2.33. exec

$EXECUTABLE_NAME : (see $ variables, $^X variable)

executing

methods : 5.3.6. Method Invocation

other programs from Perl : 3.2.167. system

Perl program

1.3.1. How to Do It
6.1. Cooperating with Command Interpreters

execv function (in C) : 3.2.33. exec

execvp function (in C) : 3.2.33. exec

exists function

3.2.34. exists
5.4.3. Tying Hashes

EXISTS method : 5.4.3. Tying Hashes

exit function

3.2.35. exit
3.2.40. fork

exit statement (awk) : 6.4.2.2. a2p

exiting

diagnostics module : 7.2.10. diagnostics - Force Verbose Warning Diagnostics
infinite loop : 2.6.4.2. For loops

exp function : 3.2.36. exp

expansion, filename : 3.2.69. glob

exponentiation (**) operator

2.5.4. Exponentiation
8.2.3. Awk Traps

Exporter module : 7.2.15. Exporter - Default Import Method for Modules

expr command (debugger) : 8.1.1. Debugger Commands

extending arrays : 2.3.4. List Values and Arrays

extensions, Perl

installing : 7.2.16. ExtUtils::Install - Install Files from Here to There
Makefiles for : 7.2.18. ExtUtils::MakeMaker - Create a Makefile for a Perl Extension

extracting substrings : 3.2.162. substr

ExtUtils::Install module : 7.2.16. ExtUtils::Install - Install Files from Here to There

ExtUtils::Liblist module : 7.2.17. ExtUtils::Liblist - Determine Libraries to Use and How to Use Them

ExtUtils::MakeMaker module : 7.2.18. ExtUtils::MakeMaker - Create a Makefile for a Perl Extension

ExtUtils::Manifest module : 7.2.19. ExtUtils::Manifest - Utilities to Write and Check a MANIFEST File

ExtUtils::Miniperl module : 7.2.20. ExtUtils::Miniperl - Write the C Code for perlmain.c

ExtUtils::Mkbootstrap module : 7.2.21. ExtUtils::Mkbootstrap - Make a Bootstrap File for Use by DynaLoader

ExtUtils::Mksymlists module : 7.2.22. ExtUtils::Mksymlists - Write Linker Option Files for Dynamic Extension

ExtUtils::MM_OS2 module : 7.2.23. ExtUtils::MM_OS2 - Methods to Override UNIX Behavior in ExtUtils::MakeMaker

ExtUtils::MM_Unix module : 7.2.24. ExtUtils::MM_Unix - Methods Used by ExtUtils::MakeMaker

ExtUtils::MM_VMS module : 7.2.25. ExtUtils::MM_VMS - Methods to Override UNIX Behavior in ExtUtils::MakeMaker

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