ARGV in Perl represents the command-line arguments. : Special Variables « Language Basics « Perl






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ARGV in Perl represents the command-line arguments.

   

#  <ARGV> represents opening each file that is listed by name on the command line. 
#  @ARGV is a Perl array that contains each of the command-line arguments as a separate array element.

#!/usr/bin/perl -w

# Lists command-line arguments.

# Get first argument.
$arg = shift(@ARGV);

# Loop while there is an argument.
while (defined $arg) {
    print "$arg\n";
    
    # Get next argument.
    $arg = shift(@ARGV);
}








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35.$" is the separator
36.$# is the default format
37.$(dollar), is the separator
38.$MATCH = $&
39.$SIG{__DIE__}
40.$SIG{__WARN__} = 'IGNORE';
41.$SIG{__WARN__} = sub {die "Warning: $_[0]"};
42.$\ is 'END_OF_OUTPUT'
43.$^ is the format header
44.$^O stores the name of the operating system
45.$^S: is inside eval
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50.$~ is the format
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66.Perl's special arrays
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70.Print all command line argument
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72.Quick Sum
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74.Read lines from supplied filenames
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76.Resetting array base
77.Retrieving the Entire Pattern: $&
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