Ok here is my problem i do not know the command to load a driver for my network card in Ted hat linux 6.0 could sombody give me a hand. and if there is anyone that has a list of commands for red hat that would be great also (2 Replies)
Hello guys, I got overzealous (I Think).
I got the book Linux Unleashed that comes with the Slackware 3.0 Version of Linux for $2.00.I also have Red Hat Linux 7.2 (No book, just the OS).What I wanted to know was,other than the bells and whistles of Red Hat is there any significant difference... (2 Replies)
I have a PC running XP, and I have a PC that dual boots W2K and Red Hat Linux 7.3.
I have the two connected via crossover cable, and the two can access each other when both are running windows.
If I were to boot up Linux, can my XP PC telnet to the Linux PC? Any pointers or websites to... (3 Replies)
Hello there!
Will anybody please tell me some good links to online eBooks on Red Hat Linux 9 user experiences and the like. If the books are in PDF Format, it will be nice to read.
Thanks for cooperation in advance.
Enjoy using open source and breathe freely!
JAM (5 Replies)
My assignment is to use C++ to generate a table of values for the U.S. standard atmosphere, when data at sea level are given, which i have done perfectly. Now, i am attempting to create a matlab script to read and plot the data.
I forgot to put my table of data on my thumb drive yesterday, and... (4 Replies)
I have a requirement to copy the changed file on CIFS share mounted on Red Hat Linux to a remote FTP/SFTP server.
I tried inotify-tools, but this didn't track the modified files.
Has anyone tried incron or any other suggestion? (1 Reply)
I just started a new semester and I started my UNIX class yesterday. I've already decided to use python along with my learning process but what I really want to use with it is Kali as my UNIX/Linux platform to learn off of since I already wanted to learn Cyber Sec. anyways. I just wanted to know if... (12 Replies)
Hi,
I am facing a typical scenario for AWK command .
In HP- UNIX is behave as expected but in red hat linux same awk code is not give the same result.
The below code is for convert the fixed width file to pipe delimiter file in HP-unix server.
awk code:
#!/bin/awk -f
NR!=1... (11 Replies)
Discussion started by: brij_abhi
11 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)