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# 1  
Old 08-20-2009
Problem with diff command

Hello Guys,

I am a newbie to Unix. I was going through the diff command with example
like this,

[mraghunandanan@localhost ~]$ cat 1
1
2
4
0
8
9
[mraghunandanan@localhost ~]$ cat 2
1
0
3
2
8

My output is like this:

[mraghunandanan@localhost ~]$ diff 1 2
2,3d1
< 2
< 4
4a3,4
> 3
> 2
6d5
< 9

I am not able to understand the output, like what is the use of d,a,c and < and > symbols in this output.Can anyone explain the output. It would be of great help.

Regards,

Mahesh Raghunandanan
# 2  
Old 08-20-2009
Hello Magesh,

diff tells you which lines must be changed in the first file to make both files agree.


When looking at diff output, lines starting with < show lines which are in the first file, but do
not appear in the second file. Lines starting with > show new lines that appear in the
second file but are not in the first file. Lines changed between the two files show as both <
and >.

Your Friend,
Murugan Ksk
 

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