As merlyn said, all of your environment variables are stored in the %ENV hash. To list them, just iterate over the members of a hash. Here's how I would do it: 
print "List of all environment variables:\n";
while ( my($env_name,$env_value) = each %ENV ) {
    print "\t$env_name = $env_value\n";
}

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In reply to Re: list of all the $env variables by biosysadmin
in thread list of all the $env variables by Anonymous Monk

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