New Line to this output

[denisl]

Hi,
I'm trying to spearate the output of the diff command between each result of the command with a new line but can't figure out how..
Here's a sample output from diff:
$ diff file1 file2
2d1
< ABCDEFG 12343
4c3
< ABCDEFG 12345
---
> ABCDEFG 1234x
7a7
> ABCDEFG 12341


I want to pipe it to something and make it look like this:
$ diff file1 file2 | $SOMETHING
2d1
< ABCDEFG 12343

4c3
< ABCDEFG 12345
---
> ABCDEFG 1234x

7a7
> ABCDEFG 12341

My goal here is to create a report daily that shows changes to a controlled file (audit the file). I'll copy it daily and run the diff command against it the current day and yesterday. I need to identify the a,c,d of diff and then report accordingly.. For example,
"On 9/24 ABCDEFG 1234x was ABCDEFG 12345 - This field has been CHANGED"
"On 9/24 ABCDEFG 12341 was ADDED" etc, etc..
Since I'm going to do this on AIX I plan on using grep -p to get the paragraph output of diff and then parse..

I'm struggling here... thanks!

 

[tdatgod]

Take what you have and Pipe it into


awk '/^[0..9]/ { printf("\n"); } { print $0 }'

What this tells it to do is put a NEW LINE before every line that starts with a number. SInce all the diff lines will start with <,> or --- they are exempt from the first rule. The second rule just prints every line.

---

 

[denisl]

I tried it but it doesn't seem to work..

$ diff file1 file2 | awk '/^[0..9]/ { printf("\n"); } { print $0 }'
2d1
< ABCDEFG 12343
4c3
< ABCDEFG 12345
---
> ABCDEFG 1234x
7a7
> ABCDEFG 12341
$ uname -s
AIX
$ oslevel
5.1.0.0

I tried doing it in a couple of steps using sed but no luck. I did this:
diff file1 file2 > diff.file
for line in `cat diff.file | grep "^[0-9]"`
do
cat diff.file | sed "s/$line/\
$line/g" > file.$$
mv file.$$ diff.file
done

However I cannot get sed to create a new line when using double quotes and a variable. If I dont use a variable and use single quotes sed works?

cat diff.file | sed '/23c24/\
23c24/g' > file.$$
mv file.$$

Thanks for you help..

 

[tdatgod]

Sorry [0..9] should be [0-9]