I am an Awk newbie and cannot wrap my brain around my problem:
Given multi-line records of varying lengths separated by a blank line I need to skip the first two lines
of every record and extract every-other line in each record unless the first line of the record has the word "(CONT)" in the... (10 Replies)
I have a set of files of multi-line records with the records separated by a blank line. I needed to add a record number to the front of each line followed by a colon and did the following:
awk 'BEGIN {FS = "\n"; RS = ""}{for (i=1; i<=NF; i++)print NR,":",$i}' ~/Desktop/data98-1-25.txt >... (3 Replies)
Hi all,
I want to search for a data type in a line.For this in a loop i am checking for $DATA_TYPE in a line using grep.But grep is not able to find when i give this.
Can any one tell me how to check string in $DATA_TYPE variable in line usign grep (or) any other way to do the above task.
... (4 Replies)
Hi.
I am reasonably new to awk, but have done quite a lot of unix scripting in the past. I have resolved the issues below with unix scripting but it runs like a dog. Moved to awk for speed and functionality but running up a big learning curve in a hurry, so hope there is some help here.
I... (6 Replies)
Hey there,
I have a table of contents file of the form
1 Title1
1.1 Subtitle1
1.1.1 Subsubtitle1
1.1.2 Subsubtitle2
...
and want to count the number of dots in the first field to find out the level of the section.
I use the gsub function for the job, which works if I pass the pattern... (2 Replies)
I am trying to write a script that will help me put a file into excel with little manipulation. Below is a sample of the file im using.
Group1:*:gid1:user,user
Group2:*:gid2:user,user
Group3:*:gid3:user,user,user,user,user,user,user
Group4:*:gid4:user,user
I marked in red the part that is... (1 Reply)
I want something that would show up basically like:
Menu
-----
1) Option 1
2) Option 2
3) Option 3
Pick one:
I tried menu = " Menu \r\n ----- \r\n 1)Option 1 \r\n..............etc etc etc"
but that didnt work (just got the whole menu one one line, with the... (2 Replies)
I have a file with data records separated by multiple equals signs, as below.
==========
RECORD 1
==========
RECORD 2
DATA LINE
==========
RECORD 3
==========
RECORD 4
DATA LINE
==========
RECORD 5
DATA LINE
==========
I need to filter out all data from this file where the... (2 Replies)
Greetings experts,
Have 2 input files, of which 1 file has 1 record per line; in 2nd file, multiple lines constitute 1 record; Hence declared the RS=";"
Now in the first file which ends with ";" at each line of the line; But \nis also being considered as part of the data due to which
I am... (1 Reply)
The bash bash below extracts the oldest folder from a directory and stores it in filename
That result will match a line in bold in input. In the matching line there is an_xxx digit in italics that
(once the leading zero is removed) will match a line in link. That is the lint to print in output.... (2 Replies)
Discussion started by: cmccabe
2 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)