i have this text file name test.txt which contain :
aaaaa bbb
iiiiiiiiiiiii ccf
ddaaa ddd
and i need a script that can print out the line numbers using a while loop..
so when the script is run..it will have this:
1
2
3
any ideas? :) thanks guys (4 Replies)
Hello everyone !
Ive searched everywhere and still havnt found enough information to help me overcome (what seems like) a small problem
I have created a temporary file in which i store numbers which a seperated by a space, eg)
5 10 46
23 866 392
i wish to take the numbers for each line... (2 Replies)
Gurus,
I have the following file in csv format, to be convert from cvs to excel.
abc,summer,tennis,123456789,winter
clearsky,fall,computer,43322,monitor
I need to place commas on numbers so that they be read properly in excel.
The number column output I need to see in excel should... (8 Replies)
Hi! I'm trying to assign line numbers to each line of the file
for example consider the following..
The contents of the input file are
hello how are you?
I'm fine.
How about you?
I'm trying to get the following output..
1 hello how are you?
2 I'm fine.
3 How about you? ... (8 Replies)
i have applied the following command on a file named unix.txt that contains the string "linux from the text"
grep -n -i -w "linux from the text" unix.txt
and the result is
5:Today's Linux from the text systems are split into various branches, developed over time by AT&T as well as various... (5 Replies)
Hello friends,
Is there any way to split file from n to n+6 into 1 file and (n+7) to (n+16) into other file etc.
f.e I have source pipe delimated file with 20 lines and i need to split 1-6 in file1 and 7-16 in file2 and 17-20 in file 3
I need to split into fixed number of file like 4 files... (2 Replies)
Hi All,
I have one file name called test.txt and its having numbers inside the file.I need to identified next available number with use of unix shell scipt and have to update next available number with use of unix shell script.
Example:-
cat test.txt
5001
5002
5003
5005
7000
7001
... (5 Replies)
Hi,
I need to number the lines in my text file. I know how to do this with standard numbering (1,2,3,4, etc) but I need to count in multiples of 5, beginning 0,5,10,15...
example existing file:
abcd
efg
hijklm
nopqrs
desired output
0 abcd
5 efg
10 hijklm
15 ... (11 Replies)
Hello All,
This is a noob question. I tried searching for the answer but the answer found did not help me .
I have a file that can have duplicates.
100
200
300
400
100
150
the number 100 is duplicated twice. I want to find the duplicate along with the line number.
expected... (4 Replies)
Discussion started by: vatigers
4 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)