Lazy in a good way:
my $input = join ('', <>);
Or, if you prefer named arguments:
my $input = open (IN, $ARGV[0]) && join ('', <IN>);
Don't forget that it's @ARGV and not @argv.

If you're using this as a CGI application, it virtually, but not entirely, goes without saying:
use CGI;

In reply to Re^2: Lazy Coder by tadman
in thread Join a file piped to a perl script by tradez

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