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IO::Pager::Unbuffered - Pipe output to PAGER if destination is a TTY


  use IO::Pager::Unbuffered;
    local $STDOUT = IO::Pager::Unbuffered::open *STDOUT;
    print <<"  HEREDOC" ;
    A bunch of text later

    # You can also use scalar filehandles...
    my $token = IO::Pager::Unbuffered::open($FH) or warn($!);
    print $FH "No globs or barewords for us thanks!\n" while 1;

    # ...or an object interface
    my $token = new IO::Pager::Unbuffered;

    $token->print("OO shiny...\n") while 1;


IO::Pager subclasses are designed to programmatically decide whether or not to pipe a filehandle's output to a program specified in PAGER; determined and set by IO::Pager at runtime if not yet defined.

See IO::Pager for method details.


All methods are inherited from IO::Pager; except for instantiation.


You probably want to do something with SIGPIPE eg;

  eval {
    local $SIG{PIPE} = sub { die };
    local $STDOUT = IO::Pager::open(*STDOUT);

    while (1) {
      # Do something

  # Do something else


IO::Pager, IO::Pager::Buffered, IO::Pager::Page,


Jerrad Pierce <>

Florent Angly <>

This module was inspired by Monte Mitzelfelt's IO::Page 0.02

Significant proddage provided by Tye McQueen.


Copyright (C) 2003-2018 Jerrad Pierce

  • Thou shalt not claim ownership of unmodified materials.

  • Thou shalt not claim whole ownership of modified materials.

  • Thou shalt grant the indemnity of the provider of materials.

  • Thou shalt use and dispense freely without other restrictions.

Or, if you prefer:

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.0 or, at your option, any later version of Perl 5 you may have available.