Hi, I use open( my $out, "-|", "some command" ); in order to print "some command" output on the fly.

I don't fully understand is the behavior of such open. Obviously, open is not blocking so the program continues. while the command output is continued being read. If I add 

while (<$out>) {
        print;
    }

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I actually wait for the command to finsih, right?

But if I don't, is there a way to check further down my program whether the command has finished (and if not, wait for it to finish)? Thanks, Dave

In reply to open with pipe by daverave

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