To make sure the search term gives the correct answer when it is on the first or last line, an additional check would be required:
Test with plum or apple instead of orange..
Last edited by Scrutinizer; 03-25-2012 at 08:40 PM..
This User Gave Thanks to Scrutinizer For This Post:
hi
i dont know how to go abt this? as i m new to unix.
i have file say as xct. in file there are so many commands.
. now here i m accepting new cron settings from user.
but these new settings will be applicable for particular command.
like my file is as
* * * * * read a <... (0 Replies)
I want to capture contents of a file between 2 strings into another file
for eg all lines in between the keywords "start log" and "end log" should be copied into another file (4 Replies)
Hi,
I'm struggling to write a script to do the following,
-will go through each line in the file
-in a specific character positions, changes
the value to a new value
-These character positions are fixed througout the file
-----------------------
e.g.: file1.sh will have the following 3... (4 Replies)
Hello Experts,
I am working on a small file editing script. Since all experts here are very generous to give me the complete code, I would take up the problem in steps so that I ensure my opportunity to learn.
AIM: The script has some commented and some uncommented lines. I need to :
... (2 Replies)
I am trying to print 1st, 2nd, 13th and 14th fields of a file of line numbers from 29 to 10029. I dont know how to put this in one code. Currently I am removing the selected lines by
awk 'NR==29,NR==10029' File1 > File2
and then doing
awk '{print $1, $2, $13, $14}' File2 > File3
Can... (3 Replies)
I want to delete a line between selected lines using sed:
e.g. : Between "bus" to "pins", delete lines conaining "signal" word.
Input :
bus
direction
signal new
signal old
pins
signal ok
end
Desired Output:
bus
direction
pins
signal
end (4 Replies)
hi! i researched about comparing two columns here and got an answer. but after examining my two files, i found out that the first columns of the two files are not unique with each other. all i want to compare is the 2nd and 3rd column.
FILE 1:
ABS 456 315
EBS 923 163
JYQ3 654 237
FILE 2:... (1 Reply)
Hi
I have a file like so:
Code:
Frank Peter Tony Robert Mike 1 2 3 4 5 5 4 2 3 1 4 3 1 5 2
My out should look like this:
Peter
Tony
Mike
and so on....
I have the first part done to ask the user to... (8 Replies)
Hi All,
I'm trying to figure out which are the trusted-ips and which are not using a script file.. I have a file named 'ip-list.txt' which contains some ip addresses and another file named 'trusted-ip-list.txt' which also contains some ip addresses. I want to read a line from... (4 Replies)
Ultimate goal is to delete lines from before and after a block of lines in a given file. First attempt was something like this:
sed -e '1,/STARTUP/ d' inputfile.txt > outputfile.txt
but that deleted everything down to and including the line with STARTUP. I need to delete everything before... (6 Replies)
Discussion started by: edstevens
6 Replies
LEARN ABOUT CENTOS
yaml::node
YAML::Node(3) User Contributed Perl Documentation YAML::Node(3)NAME
YAML::Node - A generic data node that encapsulates YAML information
SYNOPSIS
use YAML;
use YAML::Node;
my $ynode = YAML::Node->new({}, 'ingerson.com/fruit');
%$ynode = qw(orange orange apple red grape green);
print Dump $ynode;
yields:
--- !ingerson.com/fruit
orange: orange
apple: red
grape: green
DESCRIPTION
A generic node in YAML is similar to a plain hash, array, or scalar node in Perl except that it must also keep track of its type. The type
is a URI called the YAML type tag.
YAML::Node is a class for generating and manipulating these containers. A YAML node (or ynode) is a tied hash, array or scalar. In most
ways it behaves just like the plain thing. But you can assign and retrieve and YAML type tag URI to it. For the hash flavor, you can also
assign the order that the keys will be retrieved in. By default a ynode will offer its keys in the same order that they were assigned.
YAML::Node has a class method call new() that will return a ynode. You pass it a regular node and an optional type tag. After that you can
use it like a normal Perl node, but when you YAML::Dump it, the magical properties will be honored.
This is how you can control the sort order of hash keys during a YAML serialization. By default, YAML sorts keys alphabetically. But notice
in the above example that the keys were Dumped in the same order they were assigned.
YAML::Node exports a function called ynode(). This function returns the tied object so that you can call special methods on it like
->keys().
keys() works like this:
use YAML;
use YAML::Node;
%$node = qw(orange orange apple red grape green);
$ynode = YAML::Node->new($node);
ynode($ynode)->keys(['grape', 'apple']);
print Dump $ynode;
produces:
---
grape: green
apple: red
It tells the ynode which keys and what order to use.
ynodes will play a very important role in how programs use YAML. They are the foundation of how a Perl class can marshall the Loading and
Dumping of its objects.
The upcoming versions of YAML.pm will have much more information on this.
AUTHOR
Ingy doet Net <ingy@cpan.org>
COPYRIGHT
Copyright (c) 2006, 2011-2012. Ingy doet Net. All rights reserved.
Copyright (c) 2002. Brian Ingerson. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
See <http://www.perl.com/perl/misc/Artistic.html>
POD ERRORS
Hey! The above document had some coding errors, which are explained below:
Around line 296:
Non-ASCII character seen before =encoding in 'doet'. Assuming UTF-8
perl v5.16.3 2012-07-13 YAML::Node(3)