May 032010
 

# a few of the most common special variables
# $_ default input
# $.  line numbers
# $1, $2, $3, etc. Pattern results
# $! System error number or string
# $@ eval() error
# $$  Process ID (PID)
# $0  Program name
# @_  List of arguments for subroutine
# @ARGV  List of command-line arguments
# @INC  List of paths Perl searches for libraries and modules
# %ENV  List of environment variables

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