I know this is going to be an easy anwer, but I haven't been able to figure this out - even with the help of the previous posts. I want to go from this
PROD USER anon;
to this
TEST;
I have coded a few sed commands, and none of them are getting the job done. anon will not always be the... (2 Replies)
Hi,
I have file as shown below.
abc,
def,
abc,
xyz,
I have to remove ',' from end of last line (xyz,). How can I do that with single command? Is it possible or I have to iterate through complete file to remove that?
- Malay (2 Replies)
HI i am having a file this
(sys19:pnlfct:/pfact/temp>) cat temp_sand
1234567890
1234567890
1234567890
1234567890
I want to make this file as
(sys19:pnlfct:/pfact/temp>) cat temp_sand
1456789023
1456789023
1456789023
1456789023
just take the 2nd and 3rd position and put it... (5 Replies)
I have a file with a bunch of similar lines in which I want to extract a phrase delimited by the first occurance of a '>' at the beginning and the first occurance of a '<' at the end (you might have guessed these are beginning/end of HTML tags). Using Sed I have managed to delete up to and... (7 Replies)
I'm sure this will be an easy question for you experts out there, but I have been searching the forum and working on this for a couple hours now and can't get it right.
I have a very messy data file that I am trying to tidy up - one of the issues is some records are split into multiple lines: ... (4 Replies)
Hello Friends, How can I remove the last two values of this line using sed
John Carey:507-699-5368:29 Albert way, Edmonton, AL 25638:9/3/90:45900
The result should look like this:
John Carey:507-699-5368:29 Albert way, Edmonton, AL 25638 (3 Replies)
Hi
I have a file which contains wrong XML, There are some garbage characters at the end of line that I want to get rid of. Example:
<request type="product" ><attributes><pair><name>q</name><value><!]></value></pair><pair><name>start</name><value>1</value></pair></attributes></request>�J ... (7 Replies)
Hello.
The token is any printable characters between 2 " .
The token is unknown, but we know that it is between 2 "
Tok 1 : "1234x567"
Tok 2 : "A3b6+None"
Tok 3 : "A3b6!1234=@"
The ligne is :
Line 1 :
"9876xABCDE"Do you have any code fragments or data samples in your post
Line 2 : ... (3 Replies)
Hi,
Searching through forum I found "sed 's/*$//'" can be used to remove trailing whitespaces and tabs from file. The command works fine but I see minor issue as below. Can you please suggest if I am doing something wrong here.
$ cat a.txt
upg_prod_test
upg_prod_new
$ cat a.txt |sed... (11 Replies)
I have a file which contains the data lines like below.I want to remove the tab spaces at the end of each line.I have tried with the command sed 's/\+$//' file.but it does not work.Can anyone help me on this?
15022 15022 15022 15022 15022 15022
15023 15023 15023 15023 15023 ... (16 Replies)
Discussion started by: am24
16 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)