Hey guys:
I've been meaning to post this question for awhile...it is regarding grep. Let's say for example that the following entry is in logxx:
Wed Feb 2 07:44:11 <vsm> 91030 Line 5 Severity 1 Vps 6
Call Answered - DN:8753101 CLID:5164665761 PI:83
If I do a grep 91030... (27 Replies)
Hi.
I have this format on a textfile:
VG Name /dev/vg00
PV Name /dev/dsk/c16t0d0
PV Name /dev/dsk/c18t0d0
PV Name /dev/dsk/c16t4d0
VG Name /dev/vg01
PV Name ... (6 Replies)
I want to search files (basically .cc files) in /xx folder and subfolders.
Those files (*.cc files) must contain #include "header.h" AND x() function.
I am writing it another way to make it clear,
I wanna list of *.cc files that have 'header.h' & 'x()'. They must have two strings, header.h... (2 Replies)
How do you grep 'select * from table_name' string from a script if the select * and from table_name are on 2 different lines ? like
select *
from table_name
Any help would be greatly appreciated !!!
Thanks
RDR (4 Replies)
I want to grep multiple lines from a text file. I want to grep all lines containing X,Y and NA in a single command. How do I go about doing that?
This is what my text files look like:
rs1983866 0.0983 10 100016313
rs1983865 0.5994 X 100016339
rs1983864 0.3272 11 100017453
rs7077266... (2 Replies)
Hello,
I can extract lines in a file, between two strings but only one time.
If there are multiple occurencies, my command show only one block.
Example, monfichier.txt contains :
debut_sect
texte L1
texte L2
texte L3
texte L4
fin_sect
donnees inutiles 1
donnees inutiles 2
... (8 Replies)
Hello all,
I have a large csv file where there are four types of rows I need to merge into one row per person, where there is a column for each possible code / type of row, even if that code/row isn't there for that person.
In the csv, a person may be listed from one to four times... (9 Replies)
Hi,
I am running the following:
PASS="username/password"
sqlplus -s << EOF | grep -v "^$"
$PASS
set feedback off
set heading off
set termout off
select name from v\$database ;
exit
EOF
Which gives
ERROR:
ORA-28002: the password will expire within 5 days
PSMP1 (1 Reply)
Discussion started by: newbie_01
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)