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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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