NOT DEFTERİ, BİLGİ PAYLAŞIMI TIRI VIRI…

Boş satırları görmezden gelerek dosya karşılaştırmak

diff -w file1.txt file2.txt

    2c2
    < hscripts.com
    ---
    > HSCRIPTS.com
    4d3
    < Hioxindia.com

diff -y kullanarak satır satır karşılaştırma yapılabilir.
-b ile boş satırlar ihmal ediliyor

 diff -by file1.txt file2.txt
    HIOX TEST              HIOX TEST
    hscripts.com         | HSCRIPTS.com
    with friend ship       with   friend  ship
    Hioxindia.com        < 

diff -i ile case insensitive karşılaştırma yapılabilir.

diff -iy file1.txt file2.txt
    HIOX TEST              HIOX TEST
    hscripts.com           HSCRIPTS.com
    with friend ship     | with   friend  ship
    Hioxindia.com        <

Diff sonucunu okumak:

cat email                           
1 John erpl08@ed                
2 Joe  CZT@cern.ch              
3 Kim  ks@x.co                  
4 Keith keith@festival		
                                
                                

cat addresses
1 John erpl08@ed
2 Joe  CZT@cern.ch
3 Jean JRS@pollux.ucs.co
4 Jim  jim@frolix8
5 Kim  ks@x.co
6 Keith keith@festival

   diff email addresses
   2a3,4
   > Jean JRS@pollux.ucs.co
   > Jim  jim@frolix8

To make these files match you need to add (a) lines 3 and 4 (3,4) of the file addresses (>) after line 2 in the file email.

diff cookies.old cookies.new
5c5
< One cup vanilla extract
---
> One teaspoon vanilla extract
7d6
< Six ounces chopped liver
21a22
> Note: The previous version of this recipe had a few errors!

The output is actually a description of how to transform the old file into the new one. Here, diff is telling you three things:

· The fifth line of the file has undergone a change. The 5c5 message says to replace line 5 of the old file with line 5 of the new file. Both the old and new text are displayed, separated by a line of three dashes. (The less-than (<) notation means “remove this line,” and the greater-than (>) sign means “add this line.”)

· Line 7 of the old file does not appear in the new file. The 7d6 message says to delete line 7 from the old file, and the files will then be in sync, starting at line 6 of the new file. The text to be deleted is displayed on the next line.

· A line was added to the new file. The 21a22 message says to add a new line after line 21 of the old file. The text to be added is displayed on the final line of the output.