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Padding diff result

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# 1  
Old 06-02-2013
Padding diff result
Hi,

Is there a way to add padding to a diff result in unix so number of "< .." lines will be equal to number of "> .." lines?
For example, if the original result is:

Code:
9a10
> "line which exists only in one file"

The changed result would be:

Code:
9a10
< "noMatch"
---
> "line which exists only in one file"

Thanks
# 2  
Old 06-02-2013
And if you wrote code to do that what would you do with the output? (What I'm asking is: what are your trying to acheive? --the answer is not "padding diff output")

Maybe
Code:
diff -y

is what you want, to give you some sort of answer.
# 3  
Old 06-03-2013
Hi jim,
I have two columns in each file, and I'd like to combine them like this:

file 1:
Code:
green 3
red 2
blue 1

file 2:
Code:
green 5
blue 6

output:
Code:
green 3 5
red 2 -
blue 1 6

And I already wrote a code which can solve the problem if "file 2" has an a dummy line

Thanks
Last edited by Scott; 06-03-2013 at 02:17 PM.. Reason: Code tags
# 4  
Old 06-03-2013
Quote:
Originally Posted by Somename
Hi jim,
I have two columns in each file, and I'd like to combine them like this:

file 1:
green 3
red 2
blue 1

file 2:
green 5
blue 6

output:
green 3 5
red 2 -
blue 1 6

And I already wrote a code which can solve the problem if "file 2" has an a dummy line

Thanks
That sort of thing is best doable with awk (perl) using associative (hash) arrays...
# 5  
Old 06-03-2013
OK thanks =)
# 6  
Old 06-03-2013
Hi.

I would use join:
Code:
$ join -o 0,1.2,2.2 -a 1 -e - <( sort z1) <(sort z2)
blue 1 6
green 3 5
red 2 -

Using these versions:
Code:
bash GNU bash 3.2.39
sort (GNU coreutils) 6.10
join (GNU coreutils) 6.10

See man pages for details.

Best wishes ... cheers, drl
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