Is there a way to get the command line arguments.
I am using getopt(3) but if the arguments are more than one for a particular option than it just ignores the second argument. For eg
./a.out -x abc def
now abd will be got with -x using getopt "( x : )" and string abc\0def will get stored... (7 Replies)
Hi
How to pass multi line text as a command line argument to a program.
(i.e)
./a.out hi this is sample 0 file1
where
hi this is sample should be stored in argv
0 in argv and so on... (3 Replies)
Hi all,
How many arguments can we pass while testing a prgm at command line..
I encountered an issue while passing 10 arguments.
For $10 its taking argument passed for $1 followed by 'zero'.
can we pass more than 9 arguments /Is there any other way.
Thanks,
rrs (6 Replies)
Hi all
i want to list out all command line arguments except $1 i have passed to a script.
Ex: sh cmdline.sh one two three four five
o/p:
two three four five (3 Replies)
--------------------------------------------------------------------------------
I have this while loop and at the end I am trying to get it to tell me the last argument I entered. And with it like this all I get is the sentence with no value for $1. Now I tried moving done after the sentence... (1 Reply)
I am working on a script wherein i need the user to enter the Build ID
for eg:the command line will show
enter the build ID
Now on entering the build ID it should be assigned to @ARGV.
How can this be done.? (1 Reply)
hi, can someone how to accept command line arguments as a variable using in script?
like: ./scriptname arguments
by accept arguments, I can use it in my script?
thx! (1 Reply)
I am new to the world of Unix and shell scripting and have been trying to get the following simple script to work:
#!/bin/bash
echo "what is your age?"
echo "you are $1 years old"I want to be able to enter my age on the command line, when prompted, and it return the... (1 Reply)
hi,,,,
I want to create a command prompt, for example "prompt>", so my prompt need to handle commands, for example "prompt>cmd", so i want to know how to get arguments for my own commands cmd, i.e. default argc should contain arguments count and argv should point to the argument vector i.e, for... (2 Replies)
Hi all,
I am trying to write a code for addition of n numbers which will be passed by the user as command line arguments.
I wrote the following code.
add=0
for (( i = 1 ; i <= $# ; i++ ))
do
add=`expr $i + $add`
done
#echo "sum is : $add"
input :
$./add.sh 12 32 14... (7 Replies)
Discussion started by: PranavEcstasy
7 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)