! Aware to Perl: input_line_number HANDLE EXPR <BR>$INPUT_LINE

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input_line_number HANDLE EXPR
$INPUT_LINE_NUMBER
$NR
$.

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input_line_number HANDLE EXPR

$INPUT_LINE_NUMBER

$NR

The current input line number for the last file handle from which you read (or performed a seek or tell on). An explicit close on a filehandle resets the line number. Because ``<>'' never does an explicit close, line numbers increase across ARGV files (but see examples under eof()). Localizing $. has the effect of also localizing Perl's notion of ``the last read filehandle''. (Mnemonic: many programs use ``.'' to mean the current line number.)

Source: Perl predefined variables
Copyright: Larry Wall, et al.

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input_line_number HANDLE EXPR $INPUT_LINE_NUMBER $NR $.

input_line_number HANDLE EXPR
$INPUT_LINE_NUMBER
$NR
$.