VCS on AIX

 
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Old 05-20-2009
VCS on AIX

Hi,
is anybody here experienced in running VCS on AIX and happy to give me some advice regarding configuration questions?
I expect very high network IO on my cluster - so a single gig-e network will not be sufficient - and though I would like to configure more than one network card per node and implement some load balancing - but I am not yet entirely sure what would be the best solution to realize this.
Thanks and regards
zxmaus
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VCS::Lite(3pm)						User Contributed Perl Documentation					    VCS::Lite(3pm)

NAME
VCS::Lite - Minimal version control system SYNOPSIS
use VCS::Lite; # diff my $lit = VCS::Lite->new('/home/me/foo1.txt'); my $lit2 = VCS::Lite->new('/home/me/foo2.txt'); my $difftxt = $lit->delta($lit2)->diff; print OUTFILE $difftxt; # patch my $delt = VCS::Lite::Delta->new('/home/me/patch.diff'); my $lit3 = $lit->patch($delt); print OUTFILE $lit3->text; # merge my $lit4 = $lit->merge($lit->delta($lit2),$lit->delta($lit3)); print OUTFILE $lit4->text; DESCRIPTION
This module provides the functions normally associated with a version control system, but without needing or implementing a version control system. Applications include wikis, document management systems and configuration management. It makes use of the module Algorithm::Diff. It provides the facility for basic diffing, patching and merging. API
new The underlying storage concept of VCS::Lite is an array. The members of the array can be anything that a scalar can represent (including references to structures and objects). The default is for the object to hold an array of scalars as strings corresponding to lines of text. The basic form of the constructor is as follows: my $lite = VCS::Lite->new( '/my/file'); which slurps the file to make an object. The full form is as follows: my $lite = VCS::Lite->new( $object_id, $separation, $source, ...); $object_id This is a string to identify what is being diffed, patched or merged, in the application's environment. If there is no $source, this is used as a filename from which to read the content. $separation This is an optional parameter, which can be used via $/ to split the input file into tokens. The default is for lines of text. If you pass in a string to be tokenized, this will use $sep as a regular expression $separation can be a scalar or scalar ref, where this is used to break up the input stream. All values permitted for $/ are allowed (see perlvar). $separation can also be a hashref, to give a finer level of control. For example: { in => ' ', out => ' ', chomp => 1 } 'in' is the input record separator to use (the same as you would pass as $sep). Note that all values allowed for $/, and indeed the value of $/ passed in is what is used as a default. 'in' can be a string or a regexp. 'out' is the character used on joining the members to output the results (text method in scalar context). This is the output record separator $. Note that 'out' defaults differently depening on the setting of 'chomp': if 'chomp' is off, 'out' will default to the empty string, or rather the passed in value of $. If 'chomp' is on, 'out' will default to 'in' - note that you should specify 'out' explicitly if you are using a regexp for 'in'. If the 'chomp' flag is set, the text matching 'in' is removed from the input lines as they are read. 'chomp' is not on by default, as this is new functionality in release 0.08. $source if unspecified causes $object_id to be opened as a file and its entire contents read in. The alternative is to supply $source, which can be one of the following: "scalar" This is a string which is tokenized using $separation "arrayref" Array of tokens "filehandle" or "globref" Contents of file are slurped "callback" This is called successively to obtain tokens until received undef. In the Perl spirit of DWIM, new assumes that given an arrayref, you have already done all the work of making your list of whatevers. Given a string (filename) or a file handle, the file is slurped, reading each line of text into a member of the array. Given a callback, the routine is called successively with arguments $p1, $p2, etc. and is expected to return a scalar which is added (pushed on) to the array. apply $lite->apply($lite2); $lite->apply($lite3, base => 'original'); This method call corresponds approximately to a version control system's check-in function. This causes $lite to be modified, so that its contents now reflect those of $lite2. $lite does retain the original contents, available via original. However, unlike in a version control system, the object holds only the first original and latest contents. The VCS::Lite object passed in can also have its own original version. If this is the case, merging will be performed to incorporate the change as if it had come from a different branch. To facilitiate the merging process, optionally specify a base version, which can be the string 'original', 'contents' (the default) or a VCS::Lite object whose contents will be used. This corresponds to the "common ancestor" in version control systems. original This returns a VCS::Lite object for the original version, before changes were applied with apply. text my $foo = $lite->text; my $bar = $lit2->text('|'); my @baz = $lit3->text; In scalar context, returns the equivalent of the file contents slurped (the optional separation parameter, defaulting to $_, is used to join the strings together). In list context, returns the list of lines or records. id my $fil = $lite->id Returns the name associated with the VCS::Lite element when it was created by new. This is usually the file name. delta my $delt = $lit->delta($lit2); Perform the difference between two VCS::Lite objects. This object returns a VCS::Lite::Delta object. diff This is for backward compatibility with early versions. $lite->diff($lite2) is equivalent to $lite->delta($lite2)->diff. patch my $lit3 = $lit->patch($delt); Applies a patch to a VCS::Lite object. Accepts a file handle or file name string. Reads the file in diff format, and applies it. Returns a VCS::Lite object for the patched source. merge my $lit4 = $lit->merge($lit1,$lit2,&confl); Performs the "parallelogram of merging". This applies two different change streams represented by VCS::Lite objects. Returns a VCS::Lite object with both sets of changes merged. The third parameter to the method is a sub which is called whenever a merge conflict occurs. This needs to either resolve the conflict or insert the necessary text to highlight the conflict. BUGS, PATCHES &; FIXES At the time of release there is one known bug within VCS-Lite: http://rt.cpan.org/Public/Bug/Display.html?id=20738 Unfortunately Ivor's original svn repository is no longer available, and any work which had done on fixing this bug has now been lost. As time allows I will review the examples and try to implement an appropriate solution. If you spot a bug or are experiencing difficulties that are not explained within the POD documentation, please send an email to barbie@cpan.org or submit a bug to the RT system (see link below). However, it would help greatly if you are able to pinpoint problems or even supply a patch. http://rt.cpan.org/Public/Dist/Display.html?Name=VCS-Lite Fixes are dependant upon their severity and my availablity. Should a fix not be forthcoming, please feel free to (politely) remind me. AUTHOR
Original Author: Ivor Williams (RIP) 2008-2009 Current Maintainer: Barbie <barbie@cpan.org> 2009 COPYRIGHT
Copyright (c) Ivor Williams, 2002-2006 Copyright (c) Barbie, 2009 LICENCE
You may use, modify and distribute this module under the same terms as Perl itself. ACKNOWLEDGEMENTS
Colin Robertson for suggesting and providing patches for support of files with unterminated last lines. SEE ALSO
Algorithm::Diff. perl v5.10.1 2009-10-25 VCS::Lite(3pm)