The ${USER}${HOSTNAME} and $(_collapsed_pwd) are in 'ticks' for late evaluation.
Most complicated is the late invocation of the function (I had ran some tests: it only works in ksh93 not ksh88).
BTW there is an echo too many, resulting in double evaluation. Should be
An odd problem using .kshrc, if I run with this in my home login directory it works fine other than if I use 'man', where each word of the manual entry is on a seperate line ?. I'm using AIX 5.3 (it worked fine on 5.2). Anyone seen this before ? (3 Replies)
How to get the current working directory as part of the command prompt? Every time I chage the folder, my command prompt path shoud change. I am using Korn Shell. Any help is greatly appreciated. (3 Replies)
Hi,
I am facing two problems in my environment. Anyone can help on this?
Thanks in advance.
Problem 1
---------
When i login into my new unix system, only the .profile is executing.
.kshrc is not executing. But my default shell is .ksh
Any setup to be changed ?
Problem 2... (7 Replies)
In my .profile, my prompt is set like this:
set -o vi
PS1=`logname`@`hostname -s`:'$PWD>'
Is there a way to show what the history number would be of the command I'm typing in the prompt? For example, I frequently run commands then run 'history' to pull up the history number of a command... (2 Replies)
When I use "/" to look for a particular command that I typed in the current session it says
D02:-/home/user1/temp> /job
ksh: /job: not found.
D02:-/home/user1/temp>
previously it used to fetch all the commands which had job in it..
for example subjob, endjob, joblist etc...
may I... (7 Replies)
Greetings!
I have to work with a NFS user id between two hosts: A running Ksh 93 and B running pdksh 88.
My problem has to do with the custom prompt I created on A: it works like a charm and display colors:
PS1="$'\E
But I switch over to B, it all goes to hell (private info... (4 Replies)
I am trying to create my custom prompt and I have almost succeeded. Right now I have PS1='\n\\$\ '
What I have not figured out is how to make the directories bold when I'm using commands ls or ls -la.
Any idea how to do it???
Many thanx. (2 Replies)
I have used this color prompt on my servers for long time, in file ~\.bashrc
Black="\"
Dark="\"
Blue="\"
LBlue="\"
Green="\"
LGreen="\"
Cyan="\"
LCyan="\"
Red="\"
LRed="\"
Purple="\"
LPurple="\"
Brown="\"
Yellow="\"
LGray="\"
White="\"
Reset="\"
PS1="$Yellow\u@\h $LBlue\w... (4 Replies)
Hi,
I'm trying to customize the ksh prompt for users on a RHEL 6.6 system for having user@host pwd : $ and user@host pwd # in red color for root.
I think it's possible but i do not even succeded for a non root user :
I added in my ~/.kshrc :
PS1="Hello : " and it works
but when i... (4 Replies)
Hi,
I am trying to run this command to connect to each server without being prompted for the password. How can I do this in Linux redhat 7.2:
for HOST in $VIPS; do
su - Myadminid -c "ssh -o ConnectTimeout=10 $HOST 'date; hostname; pkill -9 -f -u Myadminid xx00 ; ps -ef |grep Myadminid'" ... (7 Replies)
Discussion started by: mrn6430
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)