#!/usr/bin/perl -w
my (@lem_lines,@dogs_lines);
while(<>){
if (($. > 100) && ($. < 200)) {
push @lem_lines,$_ if /^lemons (?!only)/;
push @dogs_lines,$_ if /dogs/;
}
}
my $lem=scalar @lem_lines;
my $dogs=scalar @dogs_lines;
print "Number of lemons excluding ( lemons only ) in lines from 101 to 199 is : $lem\n";
print "count of dogs in lines from 101 to 199 is: $dogs\n";
Run as
Code:
perl try.pl input_file
I tried for the given input by Don Cragun and works well.
Thanks Don C for your explanation about the problem.
Ofcourse , regular expression has to be updated to look for dogs or lemons only etc if skysmart is looking for specific locations for example .
dear friends,
I have a large size file containg two fields data
like this
*** ****
122 222
***** *****
***** *****
232 233
i have file like this.
i want to remove blank lines from file .
i think awk is servive this problem
i wrote a awk command but the error is... (3 Replies)
Dear friends,
I am writing shell script in csh .
i want to make arthimatic operation in csh.
i wrote sysntax like this.
set val = 230
set tmp = `0.1 * $val + 300`
echo $tmp
but it is not working .
anyone please give me syntax. (3 Replies)
Hi there
If i run this command on my Linux box directly, i get the desired result
# ipmitool fru | gawk '!NF{f=0}/mb.net0.fru/{f=1}/Product Serial/&&f{print $NF}'
00:AA:4F:A6:A6:C4
however, if i try to run it from a remote server (using SSH) and populating a variable with the result,... (5 Replies)
Hey guys, i am having a problem in my query statement. I am using Mysql in Netbeans and c++.
What i am trying to do is for the user to enter a certain value and then the program will store the value into the database...
string NewMovie ;
Cout <<" Enter your new movie : " << endl ;
... (1 Reply)
Hi Guys,
When below code is executed in script, I get desired output in output file.
awk 'NR >= $start_line && NR <= 3' master_scriptlist.txt > $driver1/scriptlist.txtBut when i replace 3 with a variable end_line=3, I do not get ouput. See code below. Is there any problem with syntax
awk... (6 Replies)
Hi,
Below is the code I am using. I am trying to list only those numbers which has a + symbol in it
cat num | awk -F"+" '{if (/^$/)
{
}
else
{if ( $0 ~ egrep "^+$" )
{
if ( $0 ~ grep "+" )
{print $0}
}
}}'
I am getting the following error:
awk: 0602-521 There is a... (7 Replies)
Hello,
I have perl script,which take some part of data in the file.
the below command works fine in normal cmd prompt.
`awk '/CDI/ && // && !/Result for/ {print $3 $5 > "final.txt"}' datalist.txt`;
`nawk -F"" '{print $2}' finalcdi.txt`;
But not working.
Please use code tags, thanks. (5 Replies)
I'm calling the following if-else from nawk. But I keep getting an error at the "else". I've tried putting more brackets and ; but still I get complaints about the "else".
Any ideas ?
Thanks,
wbrunc
BEGIN { FS = "," ; OFS = "," }
{ if ( $8 ~ /A/ && $9 == B )
$1="4/29/2013" ;
$2="J.Doe"... (2 Replies)
Hi,
I am using this awk command in my shell script :
find . -name "*" -ctime -6 | xargs cat | grep -E -v ^fileName\|^\(\) | awk -v DATE="${CURR_DATE}" -v DATE_LOG=$DATE_SYS 'BEGIN {FS=";";OFS=";";CONVFMT="%.9g";OFMT="%.9g"}... (4 Replies)
Discussion started by: abhi1988sri
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)