I was trying to run a code to check if a fax number is empty or not.
for that, I've written the following code which is throwing an error.
#!/bin/ksh
fax= "999-999-9999"
if ; then
fax_no="000-000-0000"
else
fax_no=$fax
fi
echo $fax_no
And I get the... (7 Replies)
OS Environment: HP-UX B.11.31 U ia64
I am using the shell script code to connect to Oracle RAC database.
Passing the parameter of cluster database name.
typeset -l DB_ID=$1
+ typeset -l DB_ID=sivDB
#---- 3. SetDB validation -------------
if ; then
print... (3 Replies)
Hi Friends,
I have an input file like this
chr1 100 200
chr1 200 300
chr1 300 400
chr1 400 500
chr1 500 600
chr1 600 700
chr1 700 800
chr1 800 900
chr1 900 920
chr1 940 960
I would like to get the first line's second column and the fifth line's 3rd column as one single line. This... (13 Replies)
Hi,
I have file
#cat drivers.txt
fcs0
fcs1
vscsi1
vscsi2
In this i need to check the availabality of "fcs" or "vscsi" alone not vscsi0,fcs1
I tried with "if condition" but it is not working.
cat drivers.txt| while read ADAP
do
echo "Checking for $ADAP"
if ;then
echo "FC... (9 Replies)
HI
My doubt may be basic one but I need to get it clarified..
When i use "if" condition that checks for many AND, OR logical conditions
like
if ]; then
return 0
fi
Even the if condition fails it returns as zero.. Any clue..
But if i add else condition like
if ]; ... (2 Replies)
I have a unix shell script generate.sh that writes to a file hello.txt using redirect.
For example:echo " Today's report shows progress by: " > hello.txt
This hello.txt is then send as an email body to the recipients.
My requirement is to have this special characters(up arrow and down arrow... (6 Replies)
Everyday I have to get a list of files in a directory with a special condition and feed this list to a for loop to be processed. Since I do not use Unix all the time, it is tricky for me to get that list of files. So, the question is whether there are commands that will give me the file names... (12 Replies)
Discussion started by: april
12 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)