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Top Forums UNIX for Dummies Questions & Answers Unix "look" Command "File too large" Error Message Post 302516074 by Corona688 on Thursday 21st of April 2011 03:07:49 PM
Old 04-21-2011
Ah, I think I see:
Code:
DESCRIPTION
     The look utility displays any lines in file which contain string as a
     prefix.  As look performs a binary search, the lines in file must be
     sorted (where sort(1) got the same options -d and/or -f that look is
     invoked with).

...so look really does need to know how long the file is.

grep should work since it doesn't, but won't have the performance advantage of being able to do a binary search.
 

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File::Slurp::WithinPolicy(3pm)				User Contributed Perl Documentation			    File::Slurp::WithinPolicy(3pm)

NAME
File::Slurp::WithinPolicy - Applies filesystem policies to File::Slurp SYNOPSIS
use File::Slurp::WithinPolicy qw(:all); my $text = read_file( 'filename' ); my @lines = read_file( 'filename' ); write_file( 'filename', $text ); append_file( 'filename', $more_text ); overwrite_file( 'filename', $text ); my @files = read_dir( '/path/to/dir' ); DESCRIPTION
This provides the File::Slurp interface within a policy defined by File::Policy. By default, File::Policy is a no-op and this behaves identically to File::Slurp. System administrators may want to override the default File::Policy implementation to enforce a local filesys- tem policy (see File::Policy). FUNCTIONS
read_dir See "read_dir" in File::Slurp read_file See "read_file" in File::Slurp write_file See "write_file" in File::Slurp append_file See "append_file" in File::Slurp overwrite_file See "overwrite_file" in File::Slurp EXPORTS
By default, nothing is exported. The ":all" tag can be used to export everything. Individual methods can also be exported. SEE ALSO
File::Slurp, File::Policy VERSION
$Revision: 1.4 $ on $Date: 2005/06/15 10:40:21 $ by $Author: simonf $ AUTHOR
John Alden <cpan _at_ bbc _dot_ co _dot_ uk> COPYRIGHT
(c) BBC 2005. This program is free software; you can redistribute it and/or modify it under the GNU GPL. See the file COPYING in this distribution, or http://www.gnu.org/licenses/gpl.txt perl v5.8.8 2005-06-15 File::Slurp::WithinPolicy(3pm)
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