hi there,
i'm new to UNIX( just 3month used),
i found my new box contained alot of files and directories in /home/box/
i've tried to search script in tis forum and found many of them but, i don't know
how to combine them to make a script, although using pipes.
my tasks are:
1) to scan user... (5 Replies)
Hello all
Im performing find + grep operation that looks like this :
find . -name "*.dsp" | xargs grep -on Project.lib | grep -v ':0'
and I like to add to this one liner the possibility to replace the string " Project.lib" that found ( more then once in file ) with "Example.lib"
how can I do... (0 Replies)
i have a file that contents multiple instances of the same ERROR.Below the content of the file
ERROR_FILE.txt
Archiver6.log:2009-05-25 17:58:44,385 ERROR - CleanLPDataMessage: Missing Intervals: 2
Archiver6.log:2009-05-25 18:27:36,056 ERROR - CleanLPDataMessage: Missing Intervals: 5... (5 Replies)
Hi,
This is my text file I'm trying to Grep.
Apple Location Greenland Rdsds dsds fdfd ddsads http Received Return Immediately Received End
My Grep command:
grep only--matching 'Location.*Received'
e.
Because the keyword Received appears twice, the Grep command will stop at the last... (0 Replies)
Hi,
This is my text file I'm trying to Grep.
Apple Location Greenland Rdsds dsds fdfd ddsads http Received Return Immediately Received End
My Grep command:
grep only--matching 'Location.*Received'
Because the keyword Received appears twice, the Grep command will stop at the last... (3 Replies)
Hi
How can i find the unique list of file extensions in a folder/subfolders
e.g.
MAIN/
a.txt
b.txt
a.clas
a.java
b.class
a.txt.112
c.12.ram.jar
i just need to get the below out irrespective of file being present in folder or subfolders
txt
clas
java (5 Replies)
I need to take the second column of a .csv file and count the number of instances of each unique value in that same second column. I'd like the output to be value,count sorted by most instances. Thanks for any guidance!
Data example:
317476,317756,0
816063,318861,0
313123,319091,0... (4 Replies)
Request: grep to find given matching patern and return unique values, eliminate the duplicate values
I have to retrieve the unique folder on the below file contents like;
/app/oracle/build_lib/pkg320.0_20120927
/app/oracle/build_lib/pkg320.0_20121004_prof... (5 Replies)
Hello Everyone!
I have updated the first post so that my intentions are easier to understand, and also attached sample files (post #18).
I have over 500 text files in a directory. Over 1 GB of data. The data in those files is organised in lines:
My intention is to return one line per... (23 Replies)
Discussion started by: clippertm
23 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)