Hi All,
Sorry to throw this frequent question but I lost my notes on it.
How do you list the files by date? I'm on red hat.
Thanks in advance,
itik (1 Reply)
Hi All,
I am having a pipe delimited file .In this file the 3rd column is having date values.I need to get the min date and max date from that file.
I have used
cut -d '|' test.dat -f 3|sort -u
But it is not sorting the date .How to sort the date column using unix commands
Thanks ... (4 Replies)
Hi all,
i'm new here in this forum. I really like the helpful answers in this forum.
Here a short question.
For a script i have to sort files by date and exclude the files of the actual date.
Sorting the files by date and preparing the output for awk is done by this line:
ls -l... (3 Replies)
hi there,
I have a directory which contents I can parse dynamically. I end up with a file list. I then want to display those files sorted by date, oldest files first. I have very very little PERL experience...Would anyone know how to do that ? Thanks in advance. (8 Replies)
Hi,
I have a set of columns in a csv file, my first row being an integer and 2nd being a date. I want to first sort it using the first column and then by the second.
for e.g. i have ,
1234,09/05/2009,hi
5678,01/01/2008,hi
1234,11/03/2006,hello
5678,28/07/2010,hello
i tried this... (5 Replies)
Hello Group,
I would like to sort the below file by date (first year then month and day) and I used the following command but it does not work
sort -n -t"/" -k3 -k1 -k2
"sample original file"
12/28/2009,1.0353
12/31/2009,1.0357
12/30/2009,1.0364
12/29/2009,1.0366
12/24/2009,1.0386... (6 Replies)
Hi, I am a newbie to shell programming and I need some help in sorting a list of files in ascending order of date in the filenames.
The file format is always : IGL01_AC_D_<YYYYMMDD>_N01_01
For example, in a directory MyDirectory I have the following files:
IGL01_AC_D_20110712_N01_01.dat... (11 Replies)
Here's a sample of the data:
NAME BIRTHDAY SEX LOCATION AGE ID
Jim 05/11/1986 M Japan 27 86
Rei 08/25/1990 F Korea 24 33
Jane 02/24/1985 F India 29 78
I've been trying to sort files using the... (8 Replies)
I wanted to sort the below data on 4th field(comma seperator) based on month and date and time on AIX OS.
Input data:
3,AJ,30 Jul 06:30,30 Jul 06:30
5,AJ,30 Jul 06:30,30 Jul 06:49
10,AJ,30 Jul 06:30,02 Jan 05:41
4,AJ,30 Jul 06:30,30 Jul 06:36
2,AJ,30 Jul 06:30,28 Jul 06:45
9,AJ,30 Jul... (2 Replies)
Discussion started by: Amit Joshi
2 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)