[Israel.pm] printing the output of `command` with immediate flush

[Yuval Kogman]

2009/11/17 Gabor Szabo <szabgab at gmail.com>:

> open my $ph, "$cmd |" or die;

The 3 argument form of open is better, though technically for external
commands it's potentially more than 3 ;-)

    open my $ph, "-|", @cmd;