I just set up an ftp server with Red Hat 5.2. I am doing the work, I'm baby stepping, but it seems like every step I get stuck. Currently, I'm trying to set up a crontab job, but I'm getting the following message: /bin/sh: /usr/bin/vi: No such file or directory. I see that vi exists in /bin/vi,... (3 Replies)
Hi all,
below is the problem details:
ora10g@CNORACLE1>which ld
/usr/ucb/ld
ora10g@CNORACLE1>cd /usr/ccs/bin
ora10g@CNORACLE1>ln -s /usr/ucb/ld ld
ln: cannot create ld: File exists
ora10g@CNORACLE1>
how to link it to /usr/ccs/bin? (6 Replies)
Hi!
All the basic linux commands, ie. echo, find, etc, are located in /bin. I have a couple of programs that have these commands pointed towards /usr/bin, ie, /usr/bin/echo (even though the actual 'echo' command is in /bin). How can I alias or redirect or link the /usr/bin to /bin just for this... (6 Replies)
hi there,
Would you able to advise that why the syntax or statement below couldn't work as expected ?
/usr/bin/find /backup -name "*tar*" -mtime +2 -exec /bin/rm -f {} \; 1> /dev/null 2>&1
In fact, I was initially located it as in crontab job, but it doesn't work at all. So, I was... (9 Replies)
Q1. I understand that /usr/local/bin means I can install/uninstall stuff in here and have any chance of messing up my original system files or effecting any other users. I created this directory myself.
But what about the directory I didn't create, namely /Users/m/bin? How is that directory... (1 Reply)
Hi Experts,
I found that the same commands(sort, du, df, find, grep etc.) exists in both dir.
What is the difference to use them?
i.e: to use xpg4/bin/grep and usr/bin/grep
My OS version is SunOS 5.10
Regards,
Saps (7 Replies)
Hi Guys,
OS:- Solaris 10 64Bit
I have a small query.
On one server a user is facing sed command issue.
He gets error regarding sed for this location
/users/hoy/2999/batch5/bin/internal.sh: /usr/local/bin/sed: not found
How ever the sed is actually present at this location on server:-... (13 Replies)
I'm not sure if this is the default behavior for the ld command, but it does not seem to be looking in /usr/local/lib for shared libraries.
I was trying to compile the latest version of Kanatest from svn. The autorgen.sh script seems to exit without too much trouble:
$ ./autogen.sh
checking... (2 Replies)
Discussion started by: AntumDeluge
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)