What is the correct mkfs syntax to create mirrored disk files systems? I need to make the file system 20gb. For example:
machine# mkfs -F ufs /dev/md/dsk/d40
size not specified
ufs usage: mkfs special size(sectors) \
-m : dump fs cmd line used to make this partition
-V : print this... (4 Replies)
I whant a create some files in the certain range.
For example, begin 8811 and finishing 8878
I know one good decision
touch 88{11,12,13,14,15,16,...,...,78}
I try touch 88, but i don't have results :( Bash create file with name 88 :)
But it very long command :( I wanna create it easy ... (6 Replies)
Hello
I have a ton of files in a directory of the format app.log.2008-04-04
I'd like to run a command that would archive each of these files as app.log.2008-04-04.tgz
I tried a few combinations of find with xargs etc but no luck.
Thanks
Amit (4 Replies)
Hi there
how to create a command in csh that would print files only from 1 folder but as an argument takes home directory for e.g. in my home diecrtory I have 3 folders unix, windows,mac and alot of files. and I running the program as ./op ~
this should return me files from unix folder without... (1 Reply)
Hi,
i need a single command to create multiple empty files(no trailing lines as well) and empty the files if already existing.
please let me know or if this has been ansered, if some ocan share the link please, thanks
> newfile.txt
or
:> newfile.txt
do not work (4 Replies)
I need a script file for backup (zip or tar or gz) of old log files in our unix server (causing the space problem). Could you please help me to create the zip or gz files for each log files in current directory and sub-directories also?
I found one command which is to create gz file for the... (4 Replies)
08:29 < xsi> >{respo,nd}.php bash: {respo,nd}.php: ambiguous redirect
08:31 < geirha> xsi: maybe you want tee
So I was advised to do so. And I can't create two OR MORE files at once with {a,b,c,d,e,f}.php
(which I quickly now need to create and to learn to create in the future to quickly... (2 Replies)
Hi,
Can anyone help me how to convert a .csv file to a .pdf file using shell script
Thanks (2 Replies)
Discussion started by: ssk250
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)