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Top Forums Shell Programming and Scripting extracting sentences that only contain a word Post 302527967 by birei on Monday 6th of June 2011 06:40:32 AM
Old 06-06-2011
Hi,

Using 'perl':
Code:
$ perl -ne 'print +(map { s/^\s*(\S+)\s*$/$1/; $_ } $_), "\n" if /^\s*\S+\s*$/' infile

Regards,
Birei
 

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Leak(3pm)						User Contributed Perl Documentation						 Leak(3pm)

NAME
Devel::Leak - Utility for looking for perl objects that are not reclaimed. SYNOPSIS
use Devel::Leak; ... setup code my $count = Devel::Leak::NoteSV($handle); ... code that may leak Devel::Leak::CheckSV($handle); DESCRIPTION
Devel::Leak has two functions "NoteSV" and "CheckSV". "NoteSV" walks the perl internal table of allocated SVs (scalar values) - (which actually contains arrays and hashes too), and records their addresses in a table. It returns a count of these "things", and stores a pointer to the table (which is obtained from the heap using malloc()) in its argument. "CheckSV" is passed argument which holds a pointer to a table created by "NoteSV". It re-walks the perl-internals and calls sv_dump() for any "things" which did not exist when "NoteSV" was called. It returns a count of the number of "things" now allocated. CAVEATS
Note that you need a perl built with -DDEBUGGING for sv_dump() to print anything, but counts are valid in any perl. If new "things" have been created, "CheckSV" may (also) report additional "things" which are allocated by the sv_dump() code. HISTORY
This little utility module was part of Tk until the variable renaming in perl5.005 made it clear that Tk had no business knowing this much about the perl internals. AUTHOR
Nick Ing-Simmons <nick@ni-s.u-net.com> perl v5.14.2 2004-03-18 Leak(3pm)
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