Sample input:
Loading File System
Networking in nature
Closing the System
now i need to extract the patterns between the words File and Closing:
i.e. sample output:
System
Networking in Nature
Thanks in advance !!!!!!!!!!!!!!!!! (6 Replies)
Hi Gurus,
I have a file say for ex. file1 which has 3500 lines in it which are different account numbers and another file (file2) which has 230000 lines in it. I want to read all the lines in file1 and delete all those lines from file2 which has that same pattern as in file1. I am not quite... (4 Replies)
Hi All,
I tried extracting this pattern using grep but it did not work.
What I have is a file which has contents like this:
file:///channel/add-adhd.html
file:///channel/allergies.html
file:///channel/arthritis.html
http://mail.yahoo.com/
http://messenger.yahoo.com/... (2 Replies)
Hello Perl-experts,
I am new to perl and need help to solve a problem.
I have a table in below format.
<Text A>
<Pattern1>
A Value
B Value
C Value
D Value
<Pattern2>
<Text B>
This table is in file1. I want to extract lines between Pattern1 and Pattern2 and write it into file2.... (11 Replies)
Hi All,
I need a script to extract a lines between two patterns.I have done this using grep,cut,tail and head.But its very slow, because my input file contain more than a lakh.
COMMAND:XXXXXXXXXXXXXXXXXXXX
yyyyy
zzzzzz
REQUESTSTRING:aaaaaaaaaaaaaaa;11111
222222
333333... (4 Replies)
Hello.
I am not having luck with sed or awk today.
$ echo "$BrackListFinal"
DSCF3649-DSCF3651_Brkt
DSCF3649.JPG 2014-07-21 13:34:44 On 1
DSCF3649.RAF 2014-07-21 13:34:44 On 1
DSCF3650.JPG 2014-07-21 13:34:45 On 2
DSCF3650.RAF 2014-07-21 13:34:45 On 2... (3 Replies)
I have a list in the format below, how do I read through the list and extract the lines between the ##START## and ##END##, so i can check for specific values between each ##START## & ##END## pattern
##START##
RANDOMTEXT
DFGSD
SDFSDF
##END##
##START##
morestuff
sdfggfg
sdfsdf... (10 Replies)
Hi, I need to print lines which are matching with start pattern "SELECT" and END PATTERN ";" and only select the last "select" statement including the ";" .
I have attached sample input file and the desired input should be as:
INPUT FORMAT:
SELECT
ABCD,
DEFGH,
DFGHJ,
JKLMN,
AXCVB,... (5 Replies)
Discussion started by: nani2019
5 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)