in reply to Re: Re: Killing a Forked Subprocess
in thread Killing a Forked Subprocess

Wouldn't the symbolic name be 'TERM', not 'SIGTERM' ? And also, since you're sending the signal to a process group, don't you need to give it a negative signal value? 

=item kill LIST

Sends a signal to a list of processes.  The first element of
the list must be the signal to send.  Returns the number of
processes successfully signaled.

    $cnt = kill 1, $child1, $child2;
    kill 9, @goners;

Unlike in the shell, in Perl if the I<SIGNAL> is negative, it kills
process groups instead of processes.  (On System V, a negative I<PROCE
+SS>
number will also kill process groups, but that's not portable.)  That
means you usually want to use positive not negative signals.  You may 
+also
use a signal name in quotes.  See L<perlipc/"Signals"> for details.

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Re(x4): Killing a Forked Subprocess
by IlyaM (Parson) on Mar 21, 2002 at 20:44 UTC
    Wouldn't the symbolic name be 'TERM', not 'SIGTERM'?

    I've just tested it. Actually both of them work. At least on perl 5.6.1.

    And also, since you're sending the signal to a process group, don't you need to give it a negative signal value?

    Oops. I'm sorry, I missed that. I don't know if it is allowed to write kill '-SIGHUP', .... If not still constants from POSIX.pm can be used instead of numbers: 

    
use POSIX qw(SIGHUP);
kill -(SIGHUP), ....;

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    --
    Ilya Martynov (http://martynov.org/)

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