When there is little depth of directories. It is easier to do:
now no problem if a directory name include word "oasitqtc"
Methyl, I think it's very good:
From within a directory, how do I determine whether I have write permission for it.
test -w pwd ; echo ?
This doesn't work as it returns false, even though I have write permission. (4 Replies)
Hello,
I am using Red Hat linux system. I see my /work directory has used space 300GB. But there are so many sub directory under /work. I want to list each direcotry and under all subdirectory. But i want to know how much space occupied by each directory. What kind of command i can use to... (3 Replies)
I am trying to loop through folders and extract the name of the lowest level subfolder
I was running the script below, it returns
/bb/bin/prd/newyork
/bb/bin/prd/london
/bb/bin/prd/tokyo
I really want
newyork
london
tokyo
I couldn't find a standard variable for the lowest level... (1 Reply)
The a chown was done and instead of using ./ a / was used and root ownership files got changed.
I need to change the ownership of the files/directory back - backups are not working and I am concerned a reboot will not be successful.
Can anyone provide the ownership of these files/directories... (6 Replies)
normally I
rsync -haPE source destination
What I want to do is take a old ~ directory from an external drive and have it ONLY update missing files NOT replace existing files. excluding ~/library
any help would be great. (3 Replies)
I know that this basic question has been asked many times and solutions all over the internet, but none of the are working for me. I have a directory in the root directory, named "-p".
# ls -l /
total 198
<snip>
drwxr-xr-x 4 root root 4096 Dec 3 14:18 opt
drwxr-xr-x 2 root ... (2 Replies)
Hi.
My example:
I have a filesystem /log. Everyday, log files are copied to /log. I'd like to set owner and permission for files and directories in /log like that
chown -R log_adm /log/*
chmod -R 544 /log/*It's OK, but just at that time. When a new log file or new directory is created in /log,... (8 Replies)
Hi Team,
Am a newbie to Unix. As I would like to see the Server Name,Owner Name ( not numeric form), Group Name ( not numeric ID), ROOT path.
I would like to send this list as an attachment to my personal mail. Can any one please help me out to to resolve this .
Here is the sample result... (6 Replies)
Hello,
I've just started using a Solaris machine with SunOS 5.10.
After the machine is turned on, I open a Console window and at the prompt, if I execute a pwd command, it tells me I'm at my home directory (someone configured "myuser" as default user after init).
... (2 Replies)
Discussion started by: egyassun
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)