I want to print between the range two patterns if a particular pattern is present in between the two patterns. I am new to Unix. Any help would be greatly appreciated.
e.g.
Pattern1
Bombay
Calcutta
Delhi
Pattern2
Pattern1
Patna
Madras
Gwalior
Delhi
Pattern2
Pattern1... (2 Replies)
Hello everyone. I'm new to the boards, I hope I can get and possibly give some help through these forums.
I need some help.
I have two CSV files, let's call them File A and File B.
This is the structure for File A:
ID, VAR1, VAR2, VAR3 - VAR50 (where the VAR 1-VAR50 are either 0 or 1)
... (1 Reply)
Hi;
For sure there's an easy answer to this one that I am not finding..
I first set a variable, say
b1a:] max=5
then I want to use max to set the range for a for loop like so (it should run for i in 1:5)
b1a:] for i in {1..$max}; do echo $i; done
{1..5}
I would like the output... (2 Replies)
Dear all,
I have a file lik below: n of row=420, n of letters in each row=100000 like below: there is no space between the letters.
what I want is: the 75000th letter to the 85000th letter in each row.
how to do that? thanks a lot!
... (2 Replies)
The following is part of a larger project and sed is (right now) a given. I am working on a recursive Korn shell function to "peel off" XML tags from a larger text. Just for context i will show the complete function (not working right now) here:
function pGetXML
{
typeset chTag="$1"
typeset... (5 Replies)
hi all,
Say i have a range like 0 - 1000 and i need to split into diffrent files the lines which are within a specific fixed sub-range. I can achieve this manually but is not scalable if the range increase.
E.g
cat file1.txt
Response time 2 ms
Response time 15 ms
Response time 101... (12 Replies)
Hi. I have a large data file. the first column has unique identifiers. I have approximately 5 of these files and they have varying number of columns in their rows. I need to extract ~300 of the rows in to a separate file. I'm not looking for something that would do all 5 files at once, but... (7 Replies)
I have files being generated in format A20140326.00........ to A20140326.24.............
I need to copy these hourly basis from one location to another.
Eg. If i copy from 14 to 19 the hour, I use wildcard as A201403226.1*.
Requirement is : I need to copy from 06 hour and wil run the script... (1 Reply)
In my Linux system ephemeral port range is showing different ranges as follows
$ cat /proc/sys/net/ipv4/ip_local_port_range
32768 61000
cat /etc/sysctl.conf | grep net.ipv4.ip_local_port_range
net.ipv4.ip_local_port_range = 9000 65500
Which will be the effective ephemeral port... (5 Replies)
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)