The environment associative array: Associative arrays %ENV holds your system's environment variables. : Special Variables « Language Basics « Perl






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The environment associative array: Associative arrays %ENV holds your system's environment variables.

   

#!/usr/bin/perl -w

# Access environment variables.

@key_names = keys(%ENV);

print "Key names are: @key_names\n\n";

# Now, access each element from the list.
foreach $key (@key_names) {
    print "$key=$ENV{$key}\n";
}








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41.$SIG{__WARN__} = 'IGNORE';
42.$SIG{__WARN__} = sub {die "Warning: $_[0]"};
43.$\ is 'END_OF_OUTPUT'
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