hi, i would like to extract the header and put it in a variable, then use printf to output the variable, but i keep on getting errors...please tell me if my format is incorrect.
HDR = "`ps -e -o user,pid,ppid,pcpu,stime,etime,time,comm | head -n 1`"
printf (%s, $HDR);
thanks! (3 Replies)
Hi all,
My simple AWK code does C = A - B
If C can be a negative number, how awk printf formating handles it using string format specifier.
Thanks in advance
Kanu
:confused: (9 Replies)
Hi All,
I have data in the following format.
Australia,"CISCO877-SEC-K9
CISCO1841-ADSL
CISCO2821"
Australia,"CISCO877-SEC-K9
CISCO1841-ADSL
CISCO2821"
Austria,"CISCO871-K9
CISCO1841
CISCO1841-SEC/K9
CISCO1812/K9"
Austria,"CISCO1841-SEC/K9
CISCO1812/K9" (3 Replies)
Hi
I'm using awk to manipulate the data in the 6th field of the file xxx_yyy.hrv.
The sample data that is available in this field is given below
220731.7100000000000000
When i tried using this command
cat xxx_yyy.hrv | awk '{printf("%23.16f\n",$6*-1)}'
I get the output as... (4 Replies)
Hi,
I am beginner. have almost one text file which contains 6000 lines. every line is in different format.so need to rearrange in single format.
Ex: .thde.adgtmk.802ati
thde.kghijk..567ati
..thde.kghijk..458ati
thde.ertyui.456.567.789ati
thde.awse.dati
Rules:... (2 Replies)
Hi,
I have the following text file:
8 T1mapping_flip02 ok 128 108 30 1 665000-000008-000001.dcm
9 T1mapping_flip05 ok 128 108 30 1 665000-000009-000001.dcm
10 T1mapping_flip10 ok 128 108 30 1 665000-000010-000001.dcm
11 T1mapping_flip15 ok 128 108 30... (2 Replies)
Hi again:
I have a log file wihch has always this format:
DATA line 1
DATA line 2
^^^^^
| Spaces or TABs
The first line always begins from the start, but the second begins with spaces or TABs,
Question:
How can I add the second line to the first one?
I mean this:
DATA... (6 Replies)
Hi
my awk variable $0 contains the below data
Input file
000001 The Data
000002* The line 2
000003* The line3
output file Req
000001* The Data
000002** The line 2
000003** The line3
one * at column seven needs to be appended to the input lines, (5 Replies)
Hi all,
i have written this script:
awk -F';' '
BEGIN {
printf "\n"
printf "\n"
printf "\n"
printf "----------------------------------------------\n"
print " For test "
printf "----------------------------------------------\n"
test_200 = 0
test_300 = 0
test_500 = 0
test_1000 = 0... (11 Replies)
Hello
Here is an easy one
Data file
12345 (tab) Some text (tab) 53.432
23456 (tab) Some longer text (tab) 933.422
34567 (tab) Some different text (tab) 29.309
I need to awk these three tab-delimited columns so that the first two are unchanged (unformatted) and the third shows two decimal... (1 Reply)
Discussion started by: palex
1 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)