I open a socket in my main perl program,

than i execute a shell script :'/home/admin/t.sh',

when i use CTRL-C to interrupt the perl program,

i saw that the port '4444' was already openning by the shell script's program。

so，how to close the socket fd when the `system` function was executed ?

the $^F variable is unuseful.

very thanks ! 
  1 #!/bin/env perl 
  2 use Linux::Inotify2; 
  3 use Modern::Perl; 
  4 use Mojo::IOLoop; 
  5 
  6 $^F=0; 
  7 Mojo::IOLoop->server({ 
  8         port => 4444, 
  9     },sub{ 
 10         my ($stream,$chunk) = @_; 
 11         $stream->write('HTTP/1.1 200 OK'); 
 12         print " I am server \n"; 
 13     }); 
 14 
 15 system('/home/admin/t.sh &>/dev/null &'); 
 16

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In reply to close_on_exec in Perl : close socket opened in parent process when fork child , is not working by chinaxing

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