=====unix Keyword 3=====
Cut

====Definition====
Cut removes sections of each line of files.

Print selected parts of lines from each FILE to standard output.  

====References====


  * cut man page



=====unix Keyword 3 Phase 2=====
diff/diff3/patch
====Definition====
Operations used to compare files, outputting their differences, and is often used to tell the differences between versions of the same file.
====References====
List any sites, books, or sources utilized when researching information on this topic. (Remove any filler text).

  * http://en.wikipedia.org/wiki/Diff
  * http://www.network-theory.co.uk/docs/diff/diff3_Hunks.html



====Demonstration====

In this demonstration I am simply using two files to demonstrate diff and all it is doing is showing the differences between the files.

<cli>
lab46:~$ diff text.txt text2.txt 
2,3c2,3
< this 
< is 
---
> these 
> are 
4a5
> yo
lab46:~$ 

</cli>

In this demonstration i am using diff3 to examine three files line by line

<cli>
lab46:~$ diff3 text.txt text2.txt text3.txt
====
1:1,3c
  hi
  this 
  is 
2:1,3c
  hi
  these 
  are 
3:1,4c
  hello
  these
  are
  sooo
====
1:4a
2:5c
  yo
3:6c
   
lab46:~$ 

</cli>

In this demonstration i created a patch file then used it.


<cli>
lab46:~$ diff -Naur text.txt text2.txt > new-patch
lab46:~$ patch -p0 <new-patch
patching file text.txt
lab46:~$ 
</cli>