i currently have a file with columns similar to this
customer name owed
CID123 John 300
CID342 harry 500
at present i use use awk to find the amount owed by the customer using the customer ID (CID).
if the customer spends more money how would i go about using sed/awk etc to modify the amount they owe? (all the arithmetic is already working, i just need to know how to append the new value to the file under the owed column for the correct customer)
This might be a lame answer, but here it goes:
You can save each column into arrays
For corresponding CID*** of array1[i] u'll easily get array3[i] which simplifies your arithmatic part. You can make the updates or changes in owed i.e array3 and then rewrite the whole file using these updated arrays.
There might be a much simpler solution i.e. updating only the ones that have changed, this is what i would have done
Hi Friends,
Following is an output of a script
OPWQERIUTYKLSADFJHGXZNMCVBWQOPERIUTYKLSADFJHGXZNMCVB
I want to replace above string's 11 to 17 character by ******* (7 stars)
How can it be done?
Please somebody guide me. (6 Replies)
using sed to replace a specific string on a specific line number using variables
this is where i am at
grep -v WARNING output | grep -v spawn | grep -v Passphrase | grep -v Authentication | grep -v '/sbin/tfadmin netguard -C'| grep -v 'NETWORK>' >> output.clean
grep -n Destination... (2 Replies)
Hi,
I know there are lots of threads on replacing text within files, usually using sed or awk. However, I find it hard to adapt examples that I found to my specific case. I am kind of new to UNIX and have hard times learning the syntax either for sed or awk so I would appreciate any help. Here's... (5 Replies)
Hi,
I'm attempting to rename some files that have spaces in them. Without linking sed commands together is it possible to replace the first three "." to " ".
File.name.is.long.ext -> File name is long.ext
I can get the desired effect with
echo "File.name.is.long.ext" | sed 's/\./ /g;s/... (5 Replies)
Hi,
I have two input files as
File1 :
ABC:client1:project1
XYZ:client2-aa:project2
DEF:client4:proj
File2 :
client1:W-170:xx
client2-aa:WT-04:yy
client4:L-005A:zz
Also, array of valid values can be hardcoded like
Output :
ABC:W:project1
XYZ:WT:project2 (1 Reply)
I have an xml file dumped from rrd file, that I want to "patch" so the xml file doesn't contain any blank hole in the resulting graph of the rrd file.
Here is the file.
<!-- 2015-10-12 14:00:00 WIB / 1444633200 --> <row><v> 4.0419731265e+07 </v><v> 4.5045912770e+06... (2 Replies)
Hi guys,
So what I am trying to accomplish is to replace a whole string starting with some designated string.
eg:
When even I find a string starting with :
eai.endpoint.url=
replace the entire line with:
eai.endpoint.url=http://www.endpoint.com/API
Righ now I am trying to... (4 Replies)
I'm new with scripting and I can't seem to figure out what I should do to get the output that I want.
My file content would be below.
ID2|ID3 |ID4|ID5 |
I'm trying to replace the field of ID3 which has a fixed length of 10 characters, for each entry I have placed on a .txt file... (5 Replies)
Discussion started by: asdfghjkl
5 Replies
LEARN ABOUT DEBIAN
poet::cache
Poet::Cache(3pm) User Contributed Perl Documentation Poet::Cache(3pm)NAME
Poet::Cache -- Poet caching with CHI
SYNOPSIS
# In a conf file...
cache:
defaults:
driver: Memcached
servers: ["10.0.0.15:11211", "10.0.0.15:11212"]
# In a script...
use Poet::Script qw($cache);
# In a module...
use Poet qw($cache);
# In a component...
my $cache = $m->cache;
# For an arbitrary namespace...
my $cache = Poet::Cache->new(namespace => 'Some::Namespace')
# then...
my $customer = $cache->get($name);
if ( !defined $customer ) {
$customer = get_customer_from_db($name);
$cache->set( $name, $customer, "10 minutes" );
}
my $customer2 = $cache->compute($name2, "10 minutes", sub {
get_customer_from_db($name2)
});
DESCRIPTION
Poet::Cache is a subclass of CHI. CHI provides a unified caching API over a variety of storage backends, such as memory, plain files,
memory mapped files, memcached, and DBI.
Each package and Mason component uses its own CHI namespace so that caches remain separate.
CONFIGURATION
The Poet configuration entry 'cache', if any, will be passed to Poet::Cache->config(). This can go in any Poet conf file, e.g. "local.cfg"
or "global/cache.cfg".
Here's a simple configuration that caches everything to files under "data/cache". This is also the default if no configuration is present.
cache:
defaults:
driver: File
root_dir: ${root}/data/cache
Here's a more involved configuration that defines several "storage types" and assigns each namespace a storage type.
cache:
defaults:
expires_variance: 0.2
storage:
file:
driver: File
root_dir: ${root}/data/cache
memcached:
driver: Memcached
servers: ["10.0.0.15:11211", "10.0.0.15:11212"]
compress_threshold: 4096
namespace:
/some/component: { storage: file, expires_in: 5min }
/some/other/component: { storage: memcached, expires_in: 1h }
Some::Library: { storage: memcached, expires_in: 10min }
Given the configuration above, and the code
package Some::Library;
use Poet qw($cache);
this $cache will be created with properties
driver: Memcached
servers: ["10.0.0.15:11211", "10.0.0.15:11212"]
compress_threshold: 4096
expires_in: 10min
USAGE
Obtaining cache handle
o In a script (namespace will be 'main'):
use Poet::Script qw($cache);
o In a module "MyApp::Foo" (namespace will be 'MyApp::Foo'):
use Poet qw($cache);
o In a component "/foo/bar" (namespace will be '/foo/bar'):
my $cache = $m->cache;
o Manually for an arbitrary namespace:
my $cache = Poet::Cache->new(namespace => 'Some::Namespace');
# or
my $cache = MyApp::Cache->new(category => 'Some::Namespace');
Using cache handle
my $customer = $cache->get($name);
if ( !defined $customer ) {
$customer = get_customer_from_db($name);
$cache->set( $name, $customer, "10 minutes" );
}
my $customer2 = $cache->compute($name2, "10 minutes", sub {
get_customer_from_db($name2)
});
See CHI and Mason::Plugin::Cache for more details.
MODIFIABLE METHODS
These methods are not intended to be called externally, but may be useful to override or modify with method modifiers in subclasses.
initialize_caching
Called once when the Poet environment is initialized. By default, calls "__PACKAGE__->config" with the configuration entry 'cache'.
SEE ALSO
Poet
AUTHOR
Jonathan Swartz <swartz@pobox.com>
COPYRIGHT AND LICENSE
This software is copyright (c) 2012 by Jonathan Swartz.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
perl v5.14.2 2012-06-05 Poet::Cache(3pm)