The exception information message.

The backtrace of the last exception, which is the array of
the
string that indicates the point where methods invoked from. The
elements in the format like:

"filename:line"

or

"filename:line:in `methodname'"

(Mnemonic: where exception occurred at.)

The string matched by the last successful pattern match in
this scope, or

The string preceding whatever was matched by the last successful
pattern match in the current scope, or

The string following whatever was matched by the last successful
pattern match in the current scope, or

The last bracket matched by the last successful search pattern, or

Contains the subpattern from the corresponding set of parentheses
in the last successful pattern matched, not counting patterns matched
in nested blocks that have been exited already, or

The information about the last match in the current scope. Setting
this variables affects the match variables like

The flag for case insensitive,

The input record separator, newline by default. Works like
awk's RS variable. If it is set to

The output record separator for the

The output field separator for the

The default separator for

The current input line number of the last file that
was read.

The virtual concatenation file of the files given by command line
arguments, or stdin (in case no argument file supplied).

The default output for

The last input line of string by

meet

Contains the name of the file containing the Ruby script being
executed. On some operating systems assigning to

Command line arguments given for the
script. The options for Ruby interpreter are already removed.
(Mnemonic: same as sh and ksh.)

The process number of the Ruby running this script. (Mnemonic: same
as shells.)

The status of the last executed child process.

The array contains the list of places to look for Ruby scripts and
binary modules by

The array contains the module names loaded by

The status of the -d
switch.

Same as

The alias to the

The current standard input.

The current standard output.

The current standard error output.

The verbose flag, which is set by the
-v switch to the Ruby
interpreter.

The variables which names are in the form of

$-0

The alias to the

<a href="#slash">$/</a>

.

$-a

True if option

-a

is set. Read-only variable.

$-d

The alias to the

<a href="#debug">$DEBUG</a>

.

$-F

The alias to the

<a href="#semicolon">$;</a>

.

$-i

In in-place-edit mode, this variable holds the extention, otherwise

nil

. Can be assigned to enable (or disable)
in-place-edit mode.

$-I

The alias to the

<a href="#colon">$:</a>

.

$-l

True if option

-l

is set. Read-only variable.

$-p

True if option

-p

is set. Read-only variable.

$-v

The alias to the

<a href="#verbose">$VERBOSE</a>

.