Hey, got a few questions here for anyone who can help......
Command line to - display users using the system, but count them only once.
Command line to - use the lastcomm command to display how many times ive used grep in october.
Command line to - list all logged on users with at least 6... (3 Replies)
Hello,
i just wanted to know how do i find out the list of users whose terminal is writable?i mean i used
who -T
but this gives a list of all users whose terminal is writable or blocked and not writable. So how do i do this?I am new to Unix. (2 Replies)
How can I find the biggest file in a branch?
I tried
find / \*.\* | xargs du | sort -n 1,1 | head 1
but shell do nothings :(
---------- Post updated at 03:07 PM ---------- Previous update was at 02:41 PM ----------
Solved:
find / -name \*.\* | xargs du | sort -nr | head -n 1 (0 Replies)
Hello!Does anybody know how to solve this script:
,,write a shell script which displays a list of names of users who have created files "*. c" in the last day."? (1 Reply)
When I try to configure my HBA ports on Solaris 10; I cant see any output.
bash-3.2# mpathadm list lu
bash-3.2#
I checked /kernel/drv/fp.conf file.
...
mpxio-disable="no";
...
What shall I check more? what shall I do?
---------- Post updated at 10:18 AM ---------- Previous update was... (0 Replies)
hi All,
I am using the command
find /home/mqm/check/ -mtime +1|wc -l
to get a count of the files older than a day under the check directory. But instead of getting the count of the files under check directory I m getting a count including the check directory itself. Can someone please tell... (0 Replies)
Hi
i would like to know were the folder that contain file with list of all users ?
And were i can learn about what kind of folder i have and wheat they have inside?
question 2.
when i write ls -a i see all directories and then i choose for example Documents
and inside Documents i typed again... (1 Reply)
Hello all,
I want to find the files for certain users. I cant make the or condition work in this instance. I've tried the code below but it didnt worked. Any input on how to get the list for all files for this users.
find . -type f -user abc134 -o -user xyz345 -o bce483 -exec ls... (6 Replies)
Is there any command that can used in Linux that export usernames and their manager's name from AD using bash shell script?
I know this can be done using powershell but I need to use Linux for this procedure. (2 Replies)
Discussion started by: dellanicholson
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)