a nit: it's extra work putting double quotes around variables like
"$username". basically, you're telling perl to build
'"' . $username . '"'. in this function call, which is a waste of time. don't use double-quotes unless you need them.
as an aside, in perl 6, you'll be able to do something like*
module module_name;
my class NoData is Exception
{
method warn(*@args) { die @args }
}
my $uid = getpwnam($username) // fail NoData;
which will raise an exception of type NoData (a class localized to your module) if
getpwnam($username) returns an undefined value. then leave it to the NoData class to handle the exception appropriately.
*as per Exegesis 4
~Particle ;Þ
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