Tee - Pure Perl emulation of GNU tee
This documentation refers to version 0.13
# from Perl use Tee; tee( $command, @files ); # from the command line $ cat README.txt | ptee COPY.txt
Tee distribution provides the ptee program, a pure Perl emulation of
the standard GNU tool
tee. It is designed to be a platform-independent
replacement for operating systems without a native
tee program. As with
tee, it passes input received on STDIN through to STDOUT while also writing a
copy of the input to one or more files. By default, files will be overwritten.
ptee does not support ignoring interrupts, as signal handling
is not sufficiently portable.
Tee module provides a convenience function that may be used in place of
system() to redirect commands through
tee( $command, @filenames ); tee( $command, \%options, @filenames );
Executes the given command via
system(), but pipes it through ptee to copy
output to the list of files. Unlike with
system(), the command must be a
string as the command shell is used for redirection and piping. The return
system() is passed through, but reflects the success of
ptee command, which isn't very useful.
The second argument may be a hash-reference of options. Recognized options include:
-aflag to ptee to append instead of overwriting (default: false)
Because of the way that
Tee uses pipes, it is limited to capturing a single
input stream, either STDOUT alone or both STDOUT and STDERR combined. A good,
portable alternative for capturing these streams from a command separately is
IPC::Run3, though it does not allow passing it through to a terminal at the
Please report any bugs or feature using the CPAN Request Tracker.
Bugs can be submitted by email to
through the web interface at
When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.
David A. Golden (DAGOLDEN)
Copyright (c) 2006 by David A. Golden
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
The full text of the license can be found in the LICENSE file included with this module.
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