Hello guys it's me again, I need some help. What I'm doing is listing all the file and directories Recusively and using it a a master file. Then I need to do the same the nest day to make sure nothing was deleted or modified. What happen is file in one of out major directories was deleted without... (2 Replies)
Hello there,
As a newbie:
The directories in PATH can be hard to distinguish when printed out as
one line with colon .Please, can i have a sample script to display
them,one to a line.
Thank you. (1 Reply)
Hi All I have two scripts which i used to try and list all the directories one using 'function', which only lists the first directory and does not show directories within directories.
function ListDir ()
{
for arg in $(ls $HOME)
do
if
then
echo $arg
... (2 Replies)
Hi everyone.
I need to write a script which will download files/folders (a huge collection) to the local file server (centOS 4.4 Server),
and check regularly (every 6 hours or so if any new files are present, or if the old ones were modified to update contents).
Any insights on how to tackle... (2 Replies)
Hi,
I'm looking to delete some files from directories.
I've just put in a file the location of these files.
e.g:
in file supprs.txt there is:
/usr/host/t1.txt
/etc/dev/u1.java
/home/new/files/view.c
Is it possible to take this file "supprs.txt" as a parameter in a shell command ? (2 Replies)
I am working on a script that checks two arguments at the command line. The first argument is a search pattern, the second can be a file or a directory, if it is a file a second script is called that checks it for the search pattern. If the second argument is a directory, it checks for the search... (5 Replies)
Hi,
root@server] df -h
121G 14G 101G 12% /home
147G 126G 14G 91% /backup
We having our site files and images are storing in
/backup/home/user/files/ through symbolic link created in /home directory pointing in /backup directory as following.
root@server] cd /home... (1 Reply)
Hello
I have a directory structure with year in format 4 digits, e.g 2009, below which is month format 1 or 2 digits, e.g 1 or 12, blow which is day format 1 or 2 digits, e.g 1 or 31.
I want to change the names of lots of directories to the be
Year - 4 digits , e.g 2009 - No change here... (4 Replies)
Hi all,
I'm trying to get a bash script working for a program (bowtie) which takes a list of input files (*.fastq) and assembles them to an output file (outfile.sam). All the .fastq files are in one folder in my home directory (~/infiles).
The problem is that the 'bowtie' requires that... (7 Replies)
I've got this script to loop through all folders and move files that are more than 2 years old. I'm using the install command because it creates the necessary directories on the destination path and then I remove the source. I'd like to change the script to use the mv command since it is much... (4 Replies)
Discussion started by: consultant
4 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)