I'm extremely new to scripting and linux in general, so please bear with me. The class I'm taking gives virtually no instruction at all, and so I'm trying to learn everything off the web.
Anyway, I'm trying to extract characters that follow after a specific pattern ( '<B><FONT FACE="Arial">' ) but... (3 Replies)
I have a requirement where i have to read from a .sh file a text lying bet characters like 'SELECT' & ';'...Please help me out in this. I am new to shell scripting. (2 Replies)
Hi All,
i am trying to remove all special charecters().,/\~!@#%^$*&^_- and others from a tab delimited file.
I am using the following code.
while read LINE
do
echo $LINE | tr -d '=;:`"<>,./?!@#$%^&(){}'|tr -d "-"|tr -d "'" | tr -d "_"
done < trial.txt > output.txt
Problem
... (10 Replies)
I have a text file that looks like this:
I want to delete the last character of first column in all rows so that my output looks like this:
Thanks a lot! (1 Reply)
Can I just say, this is such a frustrating and yet enormously rewarding field of study. I'm in the middle of configuring GeekTool (Uh oh, stupid n00b) and I really only have one question.
I'm using Automator to grab a RSS feed, having GeekTool continually run that application every 10 minutes,... (7 Replies)
When I use vi to see what's in the file I get this:
int add1(int x) {^M return x + 1;^M}
^Mint subtract1(int x) {^M return x - 1;^M}
^Mint double_it(int x) {^M return x * 2;^M}
^Mint halve_it(int x) {^Mreturn x / 2;^M}
^Mint main() {^M int myint;^M int result;^M ... (2 Replies)
Hi,
I have a text file which when I do a 'cat' on it looks like below with the OK’s showing in green and any FAIL showing in red.
cat filename output:
===== MySQL Query Check =====
DB mpuser is alive. 733 = Expected 733 Tables. OK ]
DB mpuser_wf is alive. 61 =... (6 Replies)
Version Info:
$ cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.8 (Tikanga)
$
$ uname -a
Linux stryker138 2.6.18-308.13.1.el5 #1 SMP Thu Jul 26 05:45:09 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux
I redirected manpage of ksh command's output to a text file as shown... (6 Replies)
I am using flatfile, in that flat file we are getting the junk chars
1)I21001f<82>^Me<85>!h49 Service Charge
2) I21001f‚
e...!h49 Service Charge
please tell me how to remove all junk chars in unix scripts. (1 Reply)
Discussion started by: Talari
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)