Dear All,
I have to extract a a few lines from a log file and I know the starting String and end string(WHich is same ). Is there any simplere way using sed - awk.
e.g. from the following file
--------------------------------------
Some text
Date: 21 Oct 2008
Text to be extracted... (8 Replies)
I'm extremely new to scripting and linux in general, so please bear with me. The class I'm taking gives virtually no instruction at all, and so I'm trying to learn everything off the web.
Anyway, I'm trying to extract characters that follow after a specific pattern ( '<B><FONT FACE="Arial">' ) but... (3 Replies)
Hi all! Im trying to extract a portion of text from a file and put it into a new file. I need all the lines between <Placement> and </Placement> including the Placemark lines themselves. Is there a way to extract all instances of these and not just the first one found? I've tried using sed and... (4 Replies)
hi all,
i searched in unix.com and accquired the following commands for extracting specific lines from a file ..
sed -n '16482,16482p' in.sql > out.sql
awk 'NR>=10&&NR<=20' in.sql > out.sql....
these commands are working fine if i give the line numbers as such .. but if i pass a... (2 Replies)
Hi,
I have one file, say file 1, that has data like below where 19900107 is the date,
19900107 12 144 129 0.7380047
19900108 12 168 129 0.3149017
19900109 12 192 129 3.2766666E-02
... (3 Replies)
I have this input file:
and the desired output is as follows:
Desired Output
This is a sample taken from a huge file. Basically, the script should take the tag (TDK11..1>) add everything that has bukle=A until it sees the blank lines. Then takes the next tag (TDK2222>) adds everything that... (4 Replies)
I have a table to data which one of the columns include string of text
from within that, I am searching to include few lines but not others
for example I want to to include some combination of word address such as (address.| address? |the address | your address) but not (ip address | email... (17 Replies)
I need help extracting specific lines in a text file. The file looks like this:
POSITION TOTAL-FORCE (eV/Angst)
-----------------------------------------------------------------------------------
1.86126 1.86973 1.86972 ... (14 Replies)
Discussion started by: captainalright
14 Replies
LEARN ABOUT DEBIAN
devel::refcount
Devel::Refcount(3pm) User Contributed Perl Documentation Devel::Refcount(3pm)NAME
"Devel::Refcount" - obtain the REFCNT value of a referent
SYNOPSIS
use Devel::Refcount qw( refcount );
my $anon = [];
print "Anon ARRAY $anon has " . refcount($anon) . " reference
";
my $otherref = $anon;
print "Anon ARRAY $anon now has " . refcount($anon) . " references
";
DESCRIPTION
This module provides a single function which obtains the reference count of the object being pointed to by the passed reference value.
FUNCTIONS
$count = refcount($ref)
Returns the reference count of the object being pointed to by $ref.
COMPARISON WITH SvREFCNT
This function differs from "Devel::Peek::SvREFCNT" in that SvREFCNT() gives the reference count of the SV object itself that it is passed,
whereas refcount() gives the count of the object being pointed to. This allows it to give the count of any referent (i.e. ARRAY, HASH,
CODE, GLOB and Regexp types) as well.
Consider the following example program:
use Devel::Peek qw( SvREFCNT );
use Devel::Refcount qw( refcount );
sub printcount
{
my $name = shift;
printf "%30s has SvREFCNT=%d, refcount=%d
",
$name, SvREFCNT($_[0]), refcount($_[0]);
}
my $var = [];
printcount 'Initially, $var', $var;
my $othervar = $var;
printcount 'Before CODE ref, $var', $var;
printcount '$othervar', $othervar;
my $code = sub { undef $var };
printcount 'After CODE ref, $var', $var;
printcount '$othervar', $othervar;
This produces the output
Initially, $var has SvREFCNT=1, refcount=1
Before CODE ref, $var has SvREFCNT=1, refcount=2
$othervar has SvREFCNT=1, refcount=2
After CODE ref, $var has SvREFCNT=2, refcount=2
$othervar has SvREFCNT=1, refcount=2
Here, we see that SvREFCNT() counts the number of references to the SV object passed in as the scalar value - the $var or $othervar
respectively, whereas refcount() counts the number of reference values that point to the referent object - the anonymous ARRAY in this
case.
Before the CODE reference is constructed, both $var and $othervar have SvREFCNT() of 1, as they exist only in the current lexical pad. The
anonymous ARRAY has a refcount() of 2, because both $var and $othervar store a reference to it.
After the CODE reference is constructed, the $var variable now has an SvREFCNT() of 2, because it also appears in the lexical pad for the
new anonymous CODE block.
PURE-PERL FALLBACK
An XS implementation of this function is provided, and is used by default. If the XS library cannot be loaded, a fallback implementation in
pure perl using the "B" module is used instead. This will behave identically, but is much slower.
Rate pp xs
pp 225985/s -- -66%
xs 669570/s 196% --
SEE ALSO
o Test::Refcount - assert reference counts on objects
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2011-11-15 Devel::Refcount(3pm)