NAME

IO::Pty - Pseudo TTY object class

VERSION

0.94_05 BETA

SYNOPSIS

    use IO::Pty;

    $pty = new IO::Pty;

    $slave  = $pty->slave;

    foreach $val (1..10) {
        print $pty "$val\n";
        $_ = <$slave>;
        print "$_";
    }

    close($slave);

DESCRIPTION

IO::Pty provides an interface to allow the creation of a pseudo tty.

IO::Pty inherits from IO::Handle and so provide all the methods defined by the IO::Handle package.

Please note that pty creation is very system-dependend. If you have problems, see IO::Tty for help.

CONSTRUCTOR

new

The new constructor takes no arguments and returns a new file object which is the master side of the pseudo tty.

METHODS

ttyname

Returns the name of the slave pseudo tty. On UNIX machines this will be the pathname of the device. Use this name for informational purpose only, to get a slave filehandle, use slave().

slave

The slave method will return the slave filehandle of the given master pty, opening it anew if necessary. If IO::Stty is installed, you can then call $slave->stty() to modify the terminal settings.

close_slave

The slave filehandle will be closed and destroyed. This is necessary in the parent after forking to get rid of the open filehandle, otherwise the parent will not notice if the child exits.

make_slave_controlling_terminal

This will set the slave filehandle as the controlling terminal of the current process, which will become a session leader, so this should only be called by a child process after a fork(), e.g. in the callback to sync_exec() (see Proc::SyncExec).

SEE ALSO

IO::Tty, IO::Handle, Expect, Proc::SyncExec

MAILING LISTS

As this module is mainly used by Expect, support for it is available via the two Expect mailing lists, expectperl-announce and expectperl-discuss, at

  http://lists.sourceforge.net/lists/listinfo/expectperl-announce

and

  http://lists.sourceforge.net/lists/listinfo/expectperl-discuss

AUTHORS

Originally by Graham Barr <gbarr@pobox.com>, based on the Ptty module by Nick Ing-Simmons <nik@tiuk.ti.com>.

Now maintained and heavily rewritten by Roland Giersig <RGiersig@cpan.org>.

Contains copyrighted stuff from openssh v3.0p1, authored by Tatu Ylonen <ylo@cs.hut.fi>, Markus Friedl and Todd C. Miller <Todd.Miller@courtesan.com>.

COPYRIGHT

Now all code is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

Nevertheless the above AUTHORS retain their copyrights to the various parts and want to receive credit if their source code is used. See the source for details.

DISCLAIMER

THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.