Hi,
In a file FILE, the following lines appear :
WORD 8 8 8
ANOTHERWORD blabla
...
Directly in the prompt, if I type
$sed '/WORD/s/8/10/g' FILE
it replace the 8's by 10's in file :
$cat FILE
WORD 10 10 10
ANOTHERWORD blabla
... (9 Replies)
I have a data of the form
0.0117843924 0. 0. 0. 0.
0.011036017 0. 0. 0. 0.
0.0103351669 0. 0. 0. 0.
4839.41211 0. 0. 0. 0.
4532.08203 0. 0. 0. 0.
I would like to insert a couple of blank lines before the 4839 line, every time it appears. The numbers in the... (2 Replies)
hi guys!!!
i am writing a script in which i take an input from user and find it in a file and replace it.
My input file looks like
hi
what your name?
allrise
my code looks is
echo "Enter the name"
read name
FILE="/opt/name.txt"
NEW_FILE="/opt/new_name.txt"
exec 0<$FILE
... (3 Replies)
i have a script that will find a certian pattern and replace it with blank space
#!/bin/ksh
for i in `cat test.txt | grep "UTILINET" | cut -c 172-191`
do
perl -pi -e 's/$i//g' test.txt
echo "Completed"
done
the command gives some of the below strings
50032E1B ... (5 Replies)
Hi,
The following code loops through every file with an error extension and then loops through all XML files in that directory and replaces the target character @ with / . The problem I have is that if there is more than one occurance of @ in each individual file it doesn't replace it. Any... (2 Replies)
I have a sample file like this
7829885 7831552 + 1 1667, 0,
35934936 35937087 - 2 1281,870, 0,1281,
I would like to replace values starts with comma with just value like 0, to 0 or 1667, to 1667.
I can do with this by using tr -d '0,' '0' <file
But the... (2 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Give the vi command for replacing all occurances of the string "DOS" with the string "UNIX" in the whole... (4 Replies)
Hi,
I am looking for bash or awk script to solve the following.
Input File 1:
>Min_0-t10270-RA|>Min_0-t10270-RA protein AED:0.41 eAED:0.46 QI:0|0|0|0.25|1|1|4|0|190
MIGLGFKYLDTSYFGGFCEPSEDMNKVCTMRADCCEGIEMRFHDLKLVLEDWRNFTKLST
EEKRLWATPAAEDFF
>Min_0-t10271-RA|>Min_0-t10271-RA protein... (5 Replies)
I have a csv which has lot of columns . I was looking for an awk script which would extract a column twice. for the first occurance the header and data needs to be intact but for the second occurance i want to replace the header name since it a duplicate and extract year value which is in ddmmyy... (10 Replies)
Discussion started by: Kunalcurious
10 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)