FAQ 8.31 Can I use perl to run a telnet or ftp session?


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This is an excerpt from the latest version perlfaq8.pod, which
comes with the standard Perl distribution. These postings aim to
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to review and update the answers. The latest version of the complete
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8.31: Can I use perl to run a telnet or ftp session?

Try the "Net::FTP", "TCP::Client", and "Net::Telnet" modules (available
from CPAN). http://www.cpan.org/scripts/netstuff/telnet.emul.shar will
also help for emulating the telnet protocol, but "Net::Telnet" is quite
probably easier to use.

If all you want to do is pretend to be telnet but don't need the initial
telnet handshaking, then the standard dual-process approach will

use IO::Socket; # new in 5.004
$handle = IO::Socket::INET->new('www.perl.com:80')
or die "can't connect to port 80 on www.perl.com: $!";
if (fork()) { # XXX: undef means failure
print while <STDIN>; # everything from stdin to socket
} else {
print while <$handle>; # everything from socket to stdout
close $handle;


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