Dear Folks :),
I am new to UNIX scripting and I do not know how can I insert some text in the first column of a UNIX text file at command promtp.
I can do this in vi editor by using this command :g/^/s//BBB_
e,g I have a file named as Test.dat and it containins below text:
michal... (4 Replies)
Hi all,
I need to insert new text and change existing text in a file. For that I used the below line in the command line and got the expected output.
sed '$a\
hi...
' shell > shell1
But I face problem when using the same in script. It is throwing the error as,
sed: command garbled:... (4 Replies)
Hi All,
Can someone pls help me to insert some text on a file.
my file contains something like below..
AKBULBU,
BALUMIL,
BATCH,BATCH
BOARROB,
BOTAKAT,
C57896,
CAKIOZE,
CHECMER,
CICOFRA,
CISZPAW,2194485
I want output as
USER_ID, LOGIN_ID (6 Replies)
Input:
fstab is a configuration
file that contains information
of all the partitions
and storage devices
in your computer.
The file is located under /etc,
so the full path
to this file is /etc/fstab.
The >>>>> characters would be replaced by some texts.
For example if i run a... (5 Replies)
Hi,
I have a single value in insertval file. I want to load that value to database with the current date. I tried the below code but it is inserting <NULL> to database and echo $c is also null.
cat insertval | awk -F ' ' '{print $1}' > c
echo c=$c
data=`sqlplus -s user/pwd@hostname <<EOF ... (5 Replies)
Hi,
I am trying to extract lines of data within a log file on a Redhat 5 Linux system.
eg I need all the lines with a particular username over the last 3 minutes.
the log file may read like this, and I want a way to search all the lines extracting all the relevant lines over the last 3... (2 Replies)
I want to search for a block of text in httpd.conf that between two strings and comment it. There are multiple blocks with "<Directory.. and </Directory>"
<Directory "${ORACLE_INSTANCE}/config/${COMPONENT_TYPE}/${COMPONENT_NAME}/htdocs">
#
# Possible values for the Options directive are... (3 Replies)
Hi,
I am trying to check for missing dates in a file and would want to insert the missing date into the file.
Currently the script is as below
#!/bin/ksh
dates="dates"
cat ${dates} | grep -v "^#"
curr_month=`date '+%m`
curr_day=`date '+%d`
curr_year=`date '+%Y`
#curr_month=02... (7 Replies)
Hi guys,
I have a text file named file1.txt that is formatted like this:
001 , ID , 20000
002 , Name , Brandon
003 , Phone_Number , 616-234-1999
004 , SSNumber , 234-23-234
005 , Model , Toyota
007 , Engine ,V8
008 , GPS , OFF
and I have file2.txt formatted like this:
... (2 Replies)
Have a file which has the create statement like below
create table emp
( empno integer,
empname char(50))
primary index(empno);
i need to find a string starting with create and ends with semi-colon ;. if so insert the below statement before create statement
rename table emp to emp_rename;... (2 Replies)
Discussion started by: Mohan0509
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)