$? The status returned by the last pipe close, backtick (`` ) command, successful call to
$OFS
${^ENCODING} DEPRECATED!!! The object reference to the Encode
$ACCUMULATOR
$PROCESS_ID
$^S Current state of the interpreter. $^S State ---------
$: The current set of characters after which a string may be broken to fill continuation fields (starting with ^)
$# $# was a variable that could be used to format printed numbers. After a deprecation cycle
@LAST_MATCH_END
$^L What formats output as a form feed. The default is \f . You
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