Gurus,
I have one file which is having multiple columns and also this file is not always contain the exact columns; sometimes it contains 5 columns or 12 columns. Now, I need to find the difference from that particular file. Here is the sample file:
param1 | 10 | 20 | 30 |
param2 | 10 |... (6 Replies)
Hi guys,
I'm rather new at using UNIX based systems, and when it comes to scripting etc I'm even newer.
I have two files which i need to compare.
file1: (some random ID's)
451245
451288
136588
784522
file2: (random ID's + e-mail assigned to ID)
123888 xc@xc.com
451245 ... (21 Replies)
Hi friends,
My file is like:
Second file is :
I need to print the rows present in file one, but in order present in second file....I used
while read gh;do
awk ' $1=="' $gh'" {print >> FILENAME"output"} ' cat listoffirstfile
done < secondfile
but the output I am... (14 Replies)
I have two text files where the first three columns are exactly the same. I want to compare the fourth column of the text files and if the values are different, print that row into a new output file. How do I go about doing that?
File 1:
100 rs3794811 0.01 0.3434
100 rs8066551 0.01... (8 Replies)
Hi,
I have a space delimited text file that looks like the following:
Aa 100 200
Bb 300 100
Cc X 500
Dd 600 X
Basically, I want to take the average of columns 2 and 3 and print it in column 4. However if there is an X in either column 2 or 3, I want to print the non-X value. Therefore... (11 Replies)
Hi , I want to compare first 3 columns of File A and File B and create a new file File C which will have all rows from File B and will include rows that are present in File A and not in File B based on First 3 column comparison.
Thanks in advance for your help.
File A
A,B,C,45,46... (2 Replies)
Hi,
I need to find the difference between 2 files in unix and write the result in the new file
File1:
A
B
File2:
X 123 hajkd
Y 345 adjfka
A 123 djafjhd
B 678 dsndjks
Output file:
X 123 hajkd
Y 345 adjfka
Thanks. (6 Replies)
First I'd like to apologize if I opened a thread which is already open somewhere.
I did a bit of searching but could quite find what I was looking for, so I will try to explaing what I need.
I'm writing a script on our server, got to a point where I have two files with results. Example:
File1... (6 Replies)
Hello all, First post here. I did not notice a previous post to help me down the right path. I am looking to compare a column in a CSV file against another file (which is not a column match one for one) but more or less when a match is made, I would like to append a third column that contains a... (17 Replies)
Discussion started by: dis0wned
17 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)