Rsync finds files that need to be transferred using a "quick check"
algorithm (by default) that looks for files that have changed in size
or in last-modified time.
excerpt from man rysnc
It allows an option:
Code:
-n, --dry-run perform a trial run with no changes made
We are migrating from one server to another. We have encountered problems during testing where some files are missed in the restore and/or permissions do not get restored correctly.
I have been manually checking these items in directories, but its a big system. And this is just the test phase.... (1 Reply)
hello
I want to compare settings on 2 servers.
1] what is the command to ssh on servers and execute commands such as
prtconf | grep Memory
uname -a
2] Do you have a built-in script that executes this service?
thanks. (2 Replies)
How can we get the directory tree along with the size in two different servers and find the difference between the list..??
Eg,
Server1
dirTree1 -size
Server 2
dirTree2 -size
how can we find the directory tree with its size, and find the difference, where the servers are different... (1 Reply)
I have a requirement.
I need to write a shell script which will compare two directories residing in two different servers (SERVER A and SERVER B) and list out the discrepancies if found any.
Script will be running from SERVER A.
Please help. (2 Replies)
I need to compare same set of files in 2 different servers and generate a list (in STDOUT) which contain all the files that have changed. I don't have permission to create any temp files or folders in either servers.
- One option is to use ' if '. But for this I need to move file1 to one server... (1 Reply)
And not to start. I can compare files, that's easy. The problem is that I compare files in a directory, and check if these files exist in another directory. The problem is that the file names are not the same. So I have to compare with "md5sum" or something similar. How I can do?
All this in... (7 Replies)
Hi
Could you please help me out how to configure between two server I don't have admin idea to setup the Sftp server
the requirements is we want to send a file to vendor so we need sftp configuration so that can we can send file through sftp
Please let me know what should I ask to vendor... (1 Reply)
I'm running on a staging server. I will need to use expect and I think ssh or scp to the other boxes.
I need to see something like this....Enter:Host 1
Enter:Host 2
Enter full directory path to compare: example /apps/acd/jboss-customer1/
Enter User Id:
Enter Password:
( Assumes... (6 Replies)
Hello,
First of all I want to apologize because i'm not a admin or coder and maybe all my efforts to write only this small script in my life would need one week full time reading man pages and forums but...
I don't have the money to offer me to get this time and the script I want to do seems... (5 Replies)
Discussion started by: toscan
5 Replies
LEARN ABOUT DEBIAN
data::compare::plugins
Data::Compare::Plugins(3pm) User Contributed Perl Documentation Data::Compare::Plugins(3pm)NAME
Data::Compare::Plugins - how to extend Data::Compare
DESCRIPTION
Data::Compare natively handles several built-in data types - scalars, references to scalars, references to arrays, references to hashes,
references to subroutines, compiled regular expressions, and globs. For objects, it tries to Do The Right Thing and compares the
underlying data type. However, this is not always what you want. This is especially true if you have complex objects which overload
stringification and/or numification.
Hence we allow for plugins.
FINDING PLUGINS
Data::Compare will try to load any module installed on your system under the various @INC/Data/Compare/Plugins/ directories. If there is a
problem loading any of them, an appropriate warning will be issued.
Because of how we find plugins, no plugins are available when running in "taint" mode.
WRITING PLUGINS
Internally, plugins are "require"d into Data::Compare. This means that they need to evaluate to true. We make use of that true value.
Where normally you just put:
1;
at the end of an included file, you should instead ensure that you return a reference to an array. This is treated as being true so
satisfies perl, and is a damned sight more useful.
Inside that array should be either a description of what this plugin is to do, or references to several arrays containing such
descriptions. A description consists of two or three items. First a string telling us what the first data-type handled by your plugin is.
Second, (and optional, defaulting to the same as the first) the second data-type to compare. To handle comparisons to ordinary scalars,
give the empty string for the data-type, ie:
['MyType', '', sub { ...}]
Third and last, we need a reference to the subroutine which does the comparison. That subroutine should expect to take two parameters,
which will be of the specified type. It should return 1 if they compare the same, or 0 if they compare different.
Be aware that while you might give a description like:
['Type1', 'Type2', sub { ... }]
this will handle both comparing Type1 to Type2, and comparing Type2 to Type1. ie, comparison is commutative.
If you want to use Data::Compare's own comparison function from within your handler (to, for example, compare a data structure that you
have stored somewhere in your object) then you will need to call it as Data::Compare::Compare. However, you must be careful to avoid
infinite recursion by calling D::C::Compare which in turn calls back to your handler.
The name of your plugins does not matter, only that it lives in one of those directories. Of course, giving it a sensible name means that
the usual installation mechanisms will put it in the right place, and meaningful names will make it easier to debug your code.
For an example, look at the plugin that handles Scalar::Properties objects, which is distributed with Data::Compare.
DISTRIBUTION
Provided that the above rules are followed I see no reason for you to not upload your plugin to the CPAN yourself. You will need to make
Data::Compare a pre-requisite, so that the CPAN.pm installer does the right thing.
Alternatively, if you would prefer me to roll your plugin in with the Data::Compare distribution, I'd be happy to do so provided that the
code is clear and well-commented, and that you include tests and documentation.
SEE ALSO
Data::Compare
Data::Compare::Plugins::Scalar::Properties
AUTHOR
Copyright (c) 2004 David Cantrell <david@cantrell.org.uk>. All rights reserved. This program is free software; you can redistribute it
and/or modify it under the same terms as Perl itself.
perl v5.12.4 2009-03-07 Data::Compare::Plugins(3pm)