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Index: E

e (constant) : 9.1.1. Trigonometric Functions
-e option (sed)
2.3.1. Specifying Simple Instructions
2.3.2.3. Mixing options (POSIX)
ed editor : 2. Understanding Basic Operations
edits, pipelined : 4.4.4. Edits To Go
egrep program : 3. Understanding Regular Expression Syntax
else statements : (see if statements)
end
of line : (see $ (dollar sign))
of word : (see \<, \> escape sequences)
END procedure : 11.1.6. Control Flow
ENDFILE procedure (tawk) : 11.3.2.1. Tawk language extensions
"Ending delimiter missing" error : 2.3.1.1. Command garbled
ENVIRON variable
8.6. System Variables That Are Arrays
8.6.2. An Array of Environment Variables
environment variables : 8.6.2. An Array of Environment Variables
equal sign (=)
== (equal to) operator : 7.8. Relational and Boolean Operators
for printing line numbers : 5.9. Print Line Number
equivalence classes : 3.2.4.3. POSIX character class additions
EREs (extended regular expressions) : 3.2.4.3. POSIX character class additions
ERRNO variable (gawk) : 11.2.3.8. Additional variables
error messages
11.2.1.4. Special filenames
12.3.4. A Function for Reporting Errors
awk : 2.4.2. Error Messages
"command garbled"
2.3.1.1. Command garbled
5.1. About the Syntax of sed Commands
sed : 2.3.1.1. Command garbled
errors
debugging : 10.7. Debugging
spelling, finding (example) : 12.1. An Interactive Spelling Checker
ESC character in vi : 5.6. List
escape sequences, awk
7.6. Expressions
11.1.1. Escape Sequences
B.2.5.2. Escape sequences
escaping : (see backslash)
example programs : Sample Programs
exchange command : (see x command (sed))
exclamation point (!) : 4.2. A Global Perspective on Addressing
!= (not equal to) operator : 7.8. Relational and Boolean Operators
!~ (does not match) operator
7.5.1. Referencing and Separating Fields
7.8. Relational and Boolean Operators
csh and : 1.4. Four Hurdles to Mastering sed and awk
logical NOT operator : 7.8. Relational and Boolean Operators
tilde (~) operator : 7.5.1. Referencing and Separating Fields
exit statement : 8.3. Other Statements That Affect Flow Control
exp() : 9.1.1. Trigonometric Functions
exponentiation
7.6. Expressions
9.1.1. Trigonometric Functions
11.1.2. Exponentiation
** operator : 7.6. Expressions
^ operator : 7.6. Expressions
expressions
3.1. That's an Expression
B.2.5. Expressions
awk : 7.6. Expressions
executing as commands : 10.3. The system() Function
regular : (see regular expressions)
extended regular expressions (EREs) : 3.2.4.3. POSIX character class additions
extensions
common awk : 11.2.1. Common Extensions
gawk : 11.2.3. GNU awk (gawk)
mawk : 11.2.4. Michael's awk (mawk)
tawk : 11.3.2. Thompson Automation awk (tawk)
extent of matching : 3.2.12.1. The extent of the match
extracting file contents : 4.4.3. Extracting Contents of a File


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