The diff2html utility generates an HTML
page to display the output of the diff(1)
well-known utility. Using Cascading Style Sheets, the user can fully
personnalize the appearance of the web page (you might find the default
styles are too much colorfull). diff2html is
written using the Python language and is licensed
under the GNU GPL.
First, make sure you have Python installed. It should
be provided with all popular Linux distributions. If you don't have it, you
can get it from http://www.python.org.
Then, get the script from this link (bzip2) or
from this one (gzip).
To install it, just unpack it somewhere in your default path! For
example, /usr/bin or
/usr/local/bin might be good locations.
Issue a simple diff2html --help to get the
inline help. Basically, diff2html takes two
files on its command-line, and send the HTML page on its default output.
So a typical use is:
diff2html file1 file2 > diff.html
Take two files, for example this one and this one. The simplest way to use
diff2html is this way:
diff2html file1.txt file2.txt > diff-demo1.html
and look at the default result.
Now, using the same files, you also have your own style sheet, for example
this one. You can ask diff2html to use it using the --style-sheet command-line option:
diff2html --style-sheet diff_style.css file1.txt file2.txt
> diff_demo2.html
The résultat has changed indeed.