I found the problem Something is wrong with my typeset statements.
...
Update. More specifically it was I believe the typeset commands for pflag and oflag and rflag that were causing the problem.
Thanks. I will get fancy with printf and also get fancy with case.
I should have realized what the typeset commands were doing. It's a good example of why you shouldn't use them. Even so, you could have taken that into account in your case statement:
Or:
This printf command should give you what you want; it may need tweaking:
Keeping in mind that I'm relatively comfortable with programming in general but very new to unix and korn/bourne shell scripts..
I'm using awk on a CSV file, and then performing calculations and operations on specific fields within specific records. The CSV file I'm working with has about 600... (2 Replies)
I was told that it's a Bad Idea (especially for root ) to Add To the Variable $PATH in unix the ":." (dot),
In order to execute programs in my current directory without typing ./program
For example: PATH=$PATH:$HOME/bin:.
Does someone know why is it a Bad Idea? (2 Replies)
HELLO ALL,
URGENTLY NEEDED A SCRIPT TO SELECT AND DELETE LOWER AND MIXED CASE RECORDS FROM A COLUMN IN A TABLE.
FOR EXAMPLE : Table name is EMPLOYEE and the column name is CITY
and the CITY column records will be: Newyork
washington
... (1 Reply)
I'm trying to get a case statement to start over if an undefined option is selected... But I am ata loss on how to actually do it.
Here is a quick example of what I have.
Echo "1) do this/n
2) Do that/n
3) Quit/n
Make a selection/n"
Read answer
Case answer in
1) Dothid;;
2) Dothat;;... (3 Replies)
Well i was tidying up some files in a very important directory on our development server and somehow some plank had put a recursive sybmolic link in it. Which I the even bigger plank tried to delete from my FTP client. My FTP client then thought it would be OK to delete not only the sybmolic link... (0 Replies)
is placing two RAID5 arrays on disk as shown below Is advisable? Will this create performance problems?
sda-(500GB) sdb-(1TB) sdc-(1TB) sdd-(1TB)
(250MB)----------(250MB) ---------unused------------unused------->(/dev/md0) RAID1
... (6 Replies)
Why I get bad replace when using eval?
$ map0=( "0" "0000" "0")
$ i=0
$ eval echo \${map$i}
0000
$ a=`eval echo \${map$i}` !!!error happens!!!
bash: ${map$i}: bad substitution
How to resolve it ?
Thanks! (5 Replies)
Discussion started by: 915086731
5 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)