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Poor mans Netcat

by Corion (Patriarch)
on Nov 04, 2003 at 12:17 UTC ( [id://304388]=perlcraft: print w/replies, xml ) Need Help?? 

   1: #!/usr/bin/perl -w
   2: # As our unix printer setup is weird and I sometimes want to
   3: # print to networked (HP) printers, I needed something like
   4: # netcat. I was unsatisfied with <tt>telnet</tt>, as it did
   5: # output stuff I didn't want, and I didn't want to add the
   6: # redirection to /dev/null. Perl to the rescue:
   7: 
   8: use strict;
   9: use IO::Socket;
  10: 
  11: select IO::Socket::INET->new(PeerAddr => shift, PeerPort => (shift || 23));
  12: print
  13:   for <>;
  14: 
  15: __END__
  16: # or, as a oneliner:
  17: perl -MIO::Socket -pe 'BEGIN{select IO::Socket::INET->new(PeerAddr=>shift,PeerPort =>(shift||23))}'

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Re: Poor mans Netcat
by Samveen (Initiate) on Nov 07, 2013 at 11:00 UTC

    To add to the above, the equivalent of listening using netcat (netcat -l) to push data is

       1: #!/usr/bin/perl -w
   2: # No nc -l on SunOS 5.8 DMZed host to transfer data out.
   3: # Perl to the rescue:
   4: 
   5: use strict;
   6: use IO::Socket;
   7: 
   8: select IO::Socket::INET->new(LocalPort=>(shift||2222), Listen=>1
+)->accept; 
   9:
  10: print
  11:   for <>;
  12: 
  13: __END__
  14: # or, as a oneliner:
  15: perl -MIO::Socket -pe 'BEGIN{select IO::Socket::INET->new(LocalP
+ort=>(shift||2222), Listen=>1)->accept;}'

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