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Full Discussion: Remove line from file
Top Forums Shell Programming and Scripting Remove line from file Post 302456720 by alister on Saturday 25th of September 2010 12:26:48 PM
Old 09-25-2010
One way to portably (posix-compliant) modify a file in place:
Code:
printf '3d\nw\nq\n' | ed -s file

or
Code:
ed -s file <<EOED
    3d
    w
    q
EOED

Regards,
Alister

Last edited by alister; 09-25-2010 at 01:33 PM..
 

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ExtUtils::Typemaps::OutputMap(3pm)			 Perl Programmers Reference Guide			ExtUtils::Typemaps::OutputMap(3pm)

NAME
ExtUtils::Typemaps::OutputMap - Entry in the OUTPUT section of a typemap SYNOPSIS
use ExtUtils::Typemaps; ... my $output = $typemap->get_output_map('T_NV'); my $code = $output->code(); $output->code("..."); DESCRIPTION
Refer to ExtUtils::Typemaps for details. METHODS
new Requires "xstype" and "code" parameters. code Returns or sets the OUTPUT mapping code for this entry. xstype Returns the name of the XS type of the OUTPUT map. cleaned_code Returns a cleaned-up copy of the code to which certain transformations have been applied to make it more ANSI compliant. targetable This is an obscure optimization that used to live in "ExtUtils::ParseXS" directly. In a nutshell, this will check whether the output code involves calling "set_iv", "set_uv", "set_nv", "set_pv" or "set_pvn" to set the special $arg placeholder to a new value AT THE END OF THE OUTPUT CODE. If that is the case, the code is eligible for using the "TARG"-related macros to optimize this. Thus the name of the method: "targetable". If the optimization can not be applied, this returns undef. If it can be applied, this method returns a hash reference containing the following information: type: Any of the characters i, u, n, p with_size: Bool indicating whether this is the sv_setpvn variant what: The code that actually evaluates to the output scalar what_size: If "with_size", this has the string length (as code, not constant) SEE ALSO
ExtUtils::Typemaps AUTHOR
Steffen Mueller "<smueller@cpan.org"> COPYRIGHT &; LICENSE Copyright 2009, 2010, 2011, 2012 Steffen Mueller This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.16.2 2012-10-11 ExtUtils::Typemaps::OutputMap(3pm)
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