I'm doing manual way to add and remove "#" on etc/services.
Is there anyway I can modify the file using awk or sed or any other program.
I use vi to modify /etc/services for enabling telnet , the problem is I don't know how to do it automatically in script.
production state:
#telnet
... (9 Replies)
:) Hi all,
I would like to remove all multiple line comments, in between the pattern /*.....*/ from my file.
The comments can be expected to be at any place in my file, like this:
/*....
This multi line comment might stretch even the entire file..!
......*/
Some text
Text1 /* Comment... (25 Replies)
I have a file with data records separated by multiple equals signs, as below.
==========
RECORD 1
==========
RECORD 2
DATA LINE
==========
RECORD 3
==========
RECORD 4
DATA LINE
==========
RECORD 5
DATA LINE
==========
I need to filter out all data from this file where the... (2 Replies)
I have tried a lot, Need your help guys.
SAS Program:
data one ; /* Data step */
Input name $; /*Dec variables*/
I want to remove the commented part(/* Data step */) alone. I have tried using sed command but it is deleting the entire line itself. i need unix command to separate this and... (1 Reply)
I have tried a lot, Need your help guys.
SAS Program:
data one ; /* Data step */
Input name $; /*Dec variables*/
I want to remove the commented part(/* Data step */) alone. I have tried using sed command but it is deleting the entire line itself. i need unix command to separate this and... (6 Replies)
Hi,
I am trying to remove multi line and single line comments like examples below
I have tried this pattern. it works fine for single line comments and multi line comments in a single line only. but this fails when the comments are extended in multiple lines as shown in the comment 2 of... (3 Replies)
Hi All,
I am copying a file from windows to UNIX. After that copying it have the ctrl+M character in the file at the line break. But the file contains the data that also have ctrl+M. I want to re move the ctrl+M at the end of the line alone.
My file structure is XML and last line doesnt... (3 Replies)
Hello,
Currently, I am reading few queries from the below .sql file
--SOURCE TABLE NAME
--SOURCE QUERY
SEL COL1, COL2, COL3, COL4,
COL5, COL6, COL7 WHERE COL5 = '2015-11-04 16:24:00.000000' FROM SOURCE TABLE;
--TARGET TABLE NAME
--TARGET QUERY
SEL COLUMN1, COLUMN2, COLUMN3, COLUMN4,... (4 Replies)
Hi
OS: Redhat
Version 7.5 Enterprise
Trying to post message from shell script to Slack channel and trying below code:
text="$msg"
text1="$lmsg"
if ]
then
echo "No text specified"
exit 1
fi
escapedText=$(echo $text | $text1 | sed 's/"/\"/g' | sed "s/'/\'/g" )... (13 Replies)
Discussion started by: onenessboy
13 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)