You've got the parent/child comments the wrong way round, you may as well use exec instead of the system/exit pair, and why not catch all of those return codes from rsh?

local (%rc, $running);

# turn off stdout buffering
$| = 1;

# catch return codes
local $SIG{CHLD} = sub { $rc{wait()} = $?; --$running; };

foreach my $wks (@wkslist) {
    if ( my $pid = fork() ) {
        # parent
        ++$running;
    } else {
        # child
        print "rshing to $wks\n";
        exec($rsh_cmd, $wks, "ls");
    }
}

sleep while ($running);

[download]

I have an old snippet which you may find useful at Run some commands in parallel

Are you writing a program to execute arbitrary commands on multiple hosts at the same time? If so, check back in a day or two and I'll have the script I use posted that packs in a few features.

In reply to Re: Re: Background process using a system call by mugwumpjism
in thread Background process using a system call by jalebie

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