03-11-2007
Show the Difference between two files
I have two files and I need to know the difference between each line. This will extend to thousand lines and manual works is really not really an option.
sample:
First File Second File
allan entry1 entry2 entry3 allan entry1 entry3
bob entry1 entry2 entry3 entry4 bob entry1 entry4
I want to output the difference only. Sample output:
allan entry2
bob entry2 entry3
I know that simple grep will not work here. UNIX is new to me and this is the only way i think this can be done.
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LEARN ABOUT DEBIAN
rdswap
RDSWAP(1) General Commands Manual RDSWAP(1)
["NAME"]
rdswap - a multi-language RD documents support tool
["SYNOPSIS"]
rdswap [ -h | -v ] filename ...
["DESCRIPTION"]
This tool is written to support you to write multi-language documents using the Ruby-Document-Format (RD).
The idea for such a tool was originated by Minero Aoki, how has thought about, how to make life easier for developers who have to write and
maintain scripts in more than one language.
You have to specify at least two filenames on the command line. One containing the Ruby script, the second containing a translated RD. If
the script does not end with `.rb', it has to be the first filename mentioned on the command line! In opposition, all files containing
translations must not ending with `.rb'! They should use a extension that describes the language. So that would give us the following pic-
ture:
o sample.rb : Script contains the original documentation.
o sample.jp : Documentation written in Japanese.
o sample.de : Translation to German.
The tool doesn't care about the language extensions. You can name them as you like! So the file containing the Japanese translation above,
could also be names e.g. `sample.japan' or even `japantranslation.japan'.
For every translation file, a new file will be created. The name is build from the script filename plus the language extension. So regard-
ing the example above, following files would be created:
o sample.rb.jp
o sample.rb.de
or, given the alternative translation filename as mentioned above...
o sample.rb.japan
["How does it work?"]
The contents of all files will be split into source and RD blocks. The source of the translation files, will be discarded! Every RD block
may be of a certain type. The type will be taken from the contents directly following the `=begin' on the same line. If there is only a
lonely `=begin' on a line by itself, the type of the block is `nil'. That means in
# File sample.rd
:
=begin
bla bla
=end
:
=begin whatever or not
blub blub
=end
:
the first block would be of type `nil' and the second one of type `whatever or not'.
Block types are important for the translation. If a source will be generated from a script and a translation file, only these blocks are
taken from the translation files, that comes in the right sequence and contains the same type as the block in the script! For example:
# File sample.rb
:
=begin gnark
Some comment
=end
:
=begin
block 2
=end
:
=begin
block 3
=end
:
# File sample.de
:
=begin
Block zwei
=end
:
=begin
Block drei
=end
:
Here, the first block of `sample.rb' will *not* be translated, as there is no translation block with that type in sample.de! So the first
block would be inserted as-it-is into the translated script. The blocks afterwards, however, are translated as the block type does match
(it is `nil' there).
Attention: In a translation file, a second block will only be used, if a first one was already used (matched). A third block will only be
used, if a second one was used already!
That means, if the first block of `sample.de' would be of type e.g. `Never match', then no block would ever be taken to replace anyone of
`sample.rb'.
["OPTIONS"]
["-h"]
shows this help text.
["-v"]
shows some more text during processing.
["filename"]
means a file, that contains RD and/or Ruby code.
["EXAMPLES"]
rdswap -v sample.rb sample.ja sample.de
rdswap -v sample.ja sample.rb sample.de
rdswap -v sample.ja sample.de sample.rb
rdswap -v sample.??
["AUTHORS"]
Clemens Hintze <c.hintze@gmx.net>.
June 2012 RDSWAP(1)