Hi there
If I run a 'swap -l' on my solaris box, i get
swapfile dev swaplo blocks free
/dev/dsk/c1t0d0s1 54,65 8 67119560 65655144
/dev/dsk/c1t0d0s2 54,65 8 33119522 32655122
I wanted to run a for loop adding up the totals of each column 4 , excluding the... (2 Replies)
I'm trying to add the paths of all the xml files in certain directories to an array. I want to use the array later in my code. Anyway, for some reason this isn't working. Any help would be appreciated.
Path_Counter=0
for result in "find * -name '*.xml'"; do
XmlPath="$result"
echo... (2 Replies)
Here is one I am baffled with; I have not used unix for a while and now that I am back it has been fun remembering and I have enjoyed it, for the most past. this is in ksh.
I need to search in a file for the line with X1 and cut columns 20-25, put them into a variable, added them (dollar... (3 Replies)
Hello ,
When using vim, can ctag and cscope support recording search results and displaying the history results ? Once I jump to one tag, I can use :tnext to jump to next tag, but how can I display the preview search result? (0 Replies)
Dear experts,
I'm using solaris 5.10 and bash. I want to zip file "Amount.txt" to "Amount.zip" and rename it to "Amount_<prev_month>_<this year>.zip". For example, file for this month should be renamed to "Amount_06_2012.zip", for next month it should be "Amount_07_2012.zip". I have no problem... (8 Replies)
I want to remove commands having no output. In below text file.
bash-3.2$ cat abc_do_it.txt
grpg10so>show trunk group all status
grpg11so>show trunk group all status
grpg12so>show trunk group all status
GCPKNYAIGT73IMO 1440 1345 0 0 94 0 0 INSERVICE 93% 0%... (4 Replies)
Hello:
I am bit puzzled with what I could be doing wrong and any help is appreciated.
I have a date in YYYMMDD format and I need to find the previous date. Based on the input on this forum, I have come up with the following. It seems to work for all except the following. Here I am passing date... (3 Replies)
I have a shell script that looks something like the following:
mysql -uroot db1 < db1.sql
mysql -uroot db2 < db2.sql
mysql -uroot db3 < db3.sql
mysql -uroot db4 < db4.sql
....
different db names in more than 160 lines.
I want to run this script with nohup and have a status later.
So,... (6 Replies)
Hi There
Just created a .sql script and executes fine, it comes back with two lines of results, I was wondering is there a way of adding up the two results to get a round number. I tired wc -l but that didn't work.
Many Thanks for your help
psql -t -f... (3 Replies)
Good morning all,
This is the file name in question OD_Orders_2019-02-19.csv
I am trying to create a bash script to read into files with yesterdays date on the file name while retaining the rest of the files name. I would like for $y to equal, the name of the file with a formula output with... (2 Replies)
Discussion started by: Ibrahim A
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)