Hi, first post here be gentle. Very new to Unix. Using HP-UX 10.20
I CD into a remote directory on one machine
$ cd /net/remote hostname
yet when I do an ll in this directory none of the contents appear. It just is empty.
when I do the same command from another machine,
$ cd... (13 Replies)
Hi ,
i have two doubts in Hp-Ux
1) How to View objects or contents in a shared library in HP-Ux
2) Can i added a c object file to the existing shared file from a different directory .
for example :
I have two directories X and Y
I have a.o b.o c.o object files in X directory
I... (4 Replies)
Hi All,
I am using crontab which execute a shell script.
In the shell script, I am executing a java program. This Java program requires the jar files.
The cron job file ' cronfile.txt ' contents:
MAILTO="raju_utla@dcis.uohyd.ernet.in"
0-59 * * * *... (4 Replies)
Hi,
I have one depot file. I would want to view the contents of this file with out extracting and with out installing in a machine. Like for
$rpm -qlp rpmfilename
will list out all the files in a rpm. Like I would want a command to view the files from a .depot file. I tried with swlist... (2 Replies)
root#pwd
/opt/tools
root# cat check_traffic
/opt/tools/utils/commands $1 /opt/tools/utils/DIR/check_traffic
root# cat /opt/tools/utils/DIR/check_traffic
gew "check_traffic -v"
Hi above script works for checking traffic for an ip address im trying to view the check_traffic script by... (5 Replies)
When I use this command:
vi /home/bob/.vimI expect to see.
" ============================================================================
" Netrw Directory Listing (netrw v149)
" /home/bob/.vim
" Sorted by name
" Sort sequence:... (4 Replies)
unzip -v gives CRC info of each file in a zip(in my case .EAR) file.
# unzip -v my-application.ear
Archive: my-application.ear
Length Method Size Cmpr Date Time CRC-32 Name
-------- ------ ------- ---- ---------- ----- -------- ----
197981 Defl:N 183708 7%... (1 Reply)
I have run the following command : od -c Results_May18.fixrank | head
Here is the result. I wanted the results in tab delimited. Thanks
$ od -c Results_May18.fixrank | head
0000000 M 0 1 6 0 1 : 1 2 9 : 0 0 0 0 0
0000020 0 0 0 0 - A T T D Y ... (2 Replies)
Discussion started by: Benard
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)