\
**Category:** Rails\
**Created:** [February 8, 2009, 9:24pm UTC](https://www.ruby-forum.com/t/diff-tool-in-ruby-with-html-output/159789 "2009-02-08T21:24:00Z")\
**Posts on this page:** 3\
**Page:** 1
**Author:**  [@mauricio](https://www.ruby-forum.com/u/mauricio)\
**Post date:** [February 8, 2009, 9:24pm UTC](https://www.ruby-forum.com/t/diff-tool-in-ruby-with-html-output/159789/1 "2009-02-08T21:24:00Z")
Hello,
Anyone knows of any tool that can generate a diff between two files
and output HTML code that i could use in a page?
Doesn’t need to be a Ruby tool, any Unix compatible tool would do the
trick, I just need it to output HTML.
-
Maurício Linhares
[http://alinhavado.wordpress.com/](http://alinhavado.wordpress.com/) (pt-br) | [http://blog.codevader.com/](http://blog.codevader.com/)
(en)
---
**Author:**  [@mauricio](https://www.ruby-forum.com/u/mauricio)\
**Post date:** [February 9, 2009, 7:37pm UTC](https://www.ruby-forum.com/t/diff-tool-in-ruby-with-html-output/159789/2 "2009-02-09T19:37:51Z")
$ irb
> > `echo "testing 123\ntesting" > ./file1.txt`
> > =\> “”
> > `echo "testing 123\nhey, something new\ntesting" > ./file2.txt`
> > =\> “”
> > puts “
> >
> > ```
> > diff -cws file1.txt file2.txt
> > ```
> >
> > ”
```
*** file1.txt 2009-02-09 10:25:44.000000000 -0800
--- file2.txt 2009-02-09 10:28:31.000000000 -0800
***************
***1,2****
--- 1,3 ----
testing 123
+ hey, something new
testing
```
=\> nil
> >
Jeff
On Feb 8, 12:08 pm, Maurício Linhares [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)
---
**Author:**  [@mauricio](https://www.ruby-forum.com/u/mauricio)\
**Post date:** [February 9, 2009, 9:01pm UTC](https://www.ruby-forum.com/t/diff-tool-in-ruby-with-html-output/159789/3 "2009-02-09T21:01:51Z")
I was looking for something that could turn the diff output into nice
HTML, but thanks anyway.
-
Maurício Linhares
[http://alinhavado.wordpress.com/](http://alinhavado.wordpress.com/) (pt-br) | [http://blog.codevader.com/](http://blog.codevader.com/)
(en)