I am using grep to pull out info from a file.
The line I am searching for begins:
START TIME - Tue Sep 11 16:40:00.
There are mutiple lines of START TIME. I need the FIRST occurence ONLY.
My grep is as follows:
start="$( grep 'START TIME' filename | cut -c15-33)"
If I echo or cat... (2 Replies)
Hi All,
Is there any awk or unix command that i can make use such that the output will be as desired ?
The code will extract the latest pattern starting from the term above the asterix till the end of the input
Input:
********
aaa bbb 2007
********
123
234
134
********
xxx yyy 2007... (9 Replies)
Hi ,
supoose i have a file in which a word is repeated so many times.
I just want the firts occurence of that word through grep and it should not go to the next one means get the first occurence and stop there.
Suggest me some solutions.
Thanks
Namish (10 Replies)
In a file, field separetor in line is irregular number of spaces, so I canot use field in sub function to get my charecter replaced with empty space. I would like to substitute only one perticular charecter with space at perticular posiotn, so I canot use perticular character as that may occur... (6 Replies)
I'm not getting the syntax correct to change a line only on the first occurrence:
I've tried to change only the first match and I've tried to change the from the second match forward
sed 's/<B>PT#/<tr><td class=\"pt1\" width=\"40%\"><B>pt#/1' $file > tmpfile.html
sed ... (0 Replies)
Hi there,
how can i print the first pattern occurrence in a .log file?
I want to print the filename of the first 17262?
I tried but all I can do is print all the lines with the number 17262?
I tried using awk and sed but nothing!:wall:
I just want filename!
Here´s an example:
17259... (3 Replies)
Dear all,
I have data like below and i need to add coloumn before the COUNT field to see the Percentage out of all COUNT field value for respective raw.
=============================================
COUNT CODE sConnType tConnType... (6 Replies)
I have an output file which gives me the timely status of a server.
Sample file:
March 11 2014
21:10, 1, 2, 3, 4, 5, 6, 7, 8, 9, x, y, z...
21:05, 1, 2, 3, 4, 5, 6, 7, 8, 9, x, y, z...
21:00, 1, 2, 3, 4,... (3 Replies)
Discussion started by: rpm120
3 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)