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Top Forums Shell Programming and Scripting Not able to understand use exec command Post 302762189 by tokiwinter on Monday 28th of January 2013 08:09:58 AM
Old 01-28-2013
That is expected.

Code:
$ exec 1>>ex

You are redirecting (and appending) STDOUT to file ex - hence STDOUT is no longer "connected" to your terminal.
 

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IO::Pager::Page(3)					User Contributed Perl Documentation					IO::Pager::Page(3)

NAME
IO::Pager::Page - Emulate IO::Page, pipe STDOUT to a pager if STDOUT is a TTY SYNOPSIS
Pipes STDOUT to a pager if STDOUT is a TTY DESCRIPTION
IO::Pager was designed to programmatically decide whether or not to point the STDOUT file handle into a pipe to program specified in the PAGER environment variable or one of a standard list of pagers. USAGE
BEGIN { use IO::Pager::Page; # use I::P::P first, just in case another module sends output to STDOUT } print<<HEREDOC; ... A bunch of text later HEREDOC If you wish to forgo the potential for a Broken Pipe foible resulting from the user exiting the pager prematurely, load IO::Pager::Page like so: use IO::Pager::Page hush=>1; SEE ALSO
IO::Page, IO::Pager, IO::Pager::Unbuffered, IO::Pager::Buffered AUTHOR
Jerrad Pierce <jpierce@cpan.org> Florent Angly <florent.angly@gmail.com> This module inspired by Monte Mitzelfelt's IO::Page 0.02 COPYRIGHT AND LICENSE
Copyright (C) 2003-2012 Jerrad Pierce o Thou shalt not claim ownership of unmodified materials. o Thou shalt not claim whole ownership of modified materials. o Thou shalt grant the indemnity of the provider of materials. o 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. perl v5.18.2 2012-09-04 IO::Pager::Page(3)
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