Hi all
Is it possible to copy a structure of a directory only.
e.g.
I have a file with the following entries that is a result of a find :-
/dir1/dir2/file.dbf
/dir1/dir2/dir3/file1.dbf
/dir1/file.dbf
I want to copy these to a directory and keep the structure however starting at a new dir... (8 Replies)
Hello Groups
I am trying to find out ways of comparing a value from a 'c' structure to a value in another 'C' structure. the 'C' structure can be a List or liked list as it contains lot many records.
if we loop it in both the structures it is going to consume time.
I am looking for a simple... (3 Replies)
Hi
How to create a directory structure with getting input from a file.
I have file in that following lines are written.
./activemq-4.1.2/activemq-core-4.1.2.jar
./activemq-4.1.2/backport-util-concurrent-2.1.jar
./camel-1.4.0/apache-camel-1.4.0.jar
./camel-1.4.0/lib/activation-1.1.jar... (12 Replies)
I currently have a shell script that creates Oracle databases configured the way we want them here. One part of it allows you to choose which file system to place the database files. This is the command which works.
This produces a list of file systems from which to choose. I have been... (1 Reply)
All,
I am trying to figure out a script to run in windows that will allow me to match on First column in file1 to 8th Column in File2 then
Insert file1 column2 to file2 column4 then create a new file.
File1:
12345 Sam
12346 Bob
12347 Bill
File2:... (1 Reply)
hi,
I want to copy files from source directory based on input file (or output of previous command) and i want to have the SAME DIRECTORY STRUCTURE.
Note that i will have other files and directories which i dont want to copy to destination.
For example, dir source has following content:... (22 Replies)
Hi gurus,
I have problem with android usb tethering (usb0 interface). I tried two phones HTC Desire C and HTC Desire S. With Desire C everything works as expected, usb0 automatically goes up and gains IP address and tethering is working (output bellow)
HTC Desire C:
Nov 6 23:32:36 HP-PC... (0 Replies)
Hi folks,
I am new to bash scripting so please excuse my question.
Is there any chance to combine a case structure with the read command?
Like
case (read -p "" variable) in
x)
Thx! (7 Replies)
Dear Friends,
I am looking for a shell script to merge input files into one file .. here is my idea:
1st paramter would be outfile file (all input files content)
read all input files and merge them to input param 1
ex: if I pass 6 file names to the script then 1st file name as output file... (4 Replies)
Hi Guys,
I am newbie here and greeting to all guys of unix forum, now I want to learn unix here.
I have query here, we have file where file has 20 line record, now i want display 10 to 15 line row record only, then how it possible. (5 Replies)
Discussion started by: aaditya321
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)