Special Hashes: The %ENV Hash : Special Variables « Language Basics « Perl

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Perl » Language Basics » Special Variables

Special Hashes: The %ENV Hash


    



The %ENV hash contains the environment variables. 

If you change the value of %ENV, you will alter the environment. 



#!/usr/bin/perl

foreach $key (keys(%ENV){

   print "$key\n";

}

print "\nYour login name $ENV{'LOGNAME'}\n";

$pwd=$ENV{'PWD'};

print "\n", $pwd, "\n";

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38.	$MATCH = $&
39.	$SIG{__DIE__}
40.	$SIG{__WARN__} = 'IGNORE';
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42.	$\ is 'END_OF_OUTPUT'
43.	$^ is the format header
44.	$^O stores the name of the operating system
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