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Symbols

- (minus)

in command-line options, 26 operator, 56

in permissions, 11

in regular expressions, 43

in shell pattern matching, 14

-- (double minus)

in command-line options, 26 operator, 56

-= operator, 56

_ (underscore) in filenames, 10

: (colon)

in classpath, 24, 107, 119

in shell pattern matching, 14 in vi, 37, 43–45

! (exclamation mark) operator, 56

in shell pattern matching, 14

!= operator, 56

? (question mark)

as command-line option, 29

in shell pattern matching, 14, 196

in SQL, 333

in URLs, 406, 412

?: operator, 56

/ (forward slash)

as file separator, 107

in HTML/XML, 221–222, 433

operator, 56

// comments, 66

/* ... */ comments, 66, 128

/** ... */ comments, 128

/= operator, 56

. (dot)

as current working directory, 12, 20, 24, 29,

121, 238

in filenames, 10

in regular expressions, 43

.. (dot-dot) parent directory, 12

... (ellipsis) in method declarations, 82

^ (hat)

for the Control key, 18 operator, 56

in regular expressions, 43

in shell pattern matching, 14

^= operator, 56

~ operator, 56

' (single quote)

for literals in SQL, 333

in shell pattern matching, 15

" (double quote)

for Strings in Java, 60, 333

in shell pattern matching, 15, 108

[] (square brackets) array operator, 55–56

in regular expressions, 43

in shell pattern matching, 14

{} (braces)

array operator, 55

for compound statements, 66–70 in Javadoc comments, 130

in shell pattern matching, 108

@ (at), 181

in command-line options, 117, 123 in Javadoc comments, 128



549


$ (dollar)

in format fields, 81

in regular expressions, 43

in shell pattern matching, 15, 22

$$ environment variable, 108

* (asterisk)

in import statements, 85–86 operator, 56

in password fields, 373 in regular expressions, 43

in shell pattern matching, 13, 16, 113, 196

*= operator, 56

\ (backslash) in shell pattern matching, 15

& (ampersand) operator, 56

in regular expressions, 43 in URLs, 406, 412

&& operator, 56

&= operator, 56

# (hash)

in comments, 196

in properties files, 111

% (per cent) operator, 56

in regular expressions, 43

%= operator, 56

+ (plus)

operator, 56, 60

in permissions, 11

in regular expressions, 43 in URLs, 413

++ operator, 56

+= operator, 56

< (less-than) operator, 56

as redirection command, 6

< ... >

in command-line syntax, 73 in HTML/XML, 221

<? ... ?>, 222

<% ... %>, 426–431, 434

<%! ... %>, 429–430, 434

<%@ ... %>, 431–433

<%= ... %>, 430–431, 434

<< operator, 56

<<= operator, 56

<= operator, 56

> (greater-than) operator, 56

as redirection command, 6

>= operator, 56

>> operator, 56

>>= operator, 56

>>> operator, 56

>>>= operator, 56

= operator, 56

== operator, 56, 61, 91

| operator, 56, 391

|= operator, 56

|| operator, 56