match a pattern, print it and the next line

nymus7 · #1 (**permalink**) 07-28-2005

I have a file nbu_faq.txt (Question/answer) which looks like this

Quote:

Q: What is nbu?
A: blablabla...
Q: What is blablabla...?
A: blablabla...
Q: Why ....?
A: blablabla...
and so on...

What I am trying to do is write out each question in a file1.txt and than the question/answer in a file2.txt
like this
file1.txt
Q: What is nbu?
Q: What is blablabla...?
Q: Why ....?
file2.txt
Q: What is nbu?
A: blablabla...
Q: What is blablabla...?
A: blablabla...
Q: Why ....?
A: blablabla...

Code:

for QUESTIONS in $(cat nbu_faq.txt |grep "Q: " |awk '{print $0}' )
do
  echo $QUESTIONS >> TITLE
  echo $(awk '$1 == "$QUESTIONS" {
          print $0
          next
  }
  {print $0} ' nbu_faq.txt) >> QUEST_ANSWER
done

Where TITLE and QUEST_ANSWER are file1.txt and file2.txt
1. first problem is that the loop take argument $1,$2,$3,... for $0 and not the whole line (ex: Q: What is nbu?)!
2. second problem is to print the line where the pattern $QUESTION is matching and the next line!
Could someone help me?

vino · #2 (**permalink**) 07-28-2005

This is what I understand.

You need to extract the questions to a new file.1

In file.2, you need the Q&A from nbu_faq.txt. Which means, file.2 will be a copy of nbu_faq.txt.

So your problem is only in extracting the questions.

Try this for extracting questions

sed -n -e '/^Q:.*/p' nbu_faq.txt > file.1

Vino

nymus7 · #3 (**permalink**) 07-28-2005

Hi Vino

I believe that I did not well explain my question! it's true that it is a little bit confused

So, I've still a shell script that make HTML page and I want to include this new script to the other one.

The result would like so:

Quote:

1.Q:What's nbu?
2.Q:What's up?
3.Q:Why so?
...
Q:What's nbu?
A:abc

Q:What's up?
A:def

Q:Why so?:
A:ghi

That's means that my script should like this:

Code:

1.for each line contains "Q:xyz"
2.do
3.   call function with parameter the whole line "Q:xyz"
4.   cat the whole line corresponding to "Q:xyz" and the whole line "A:xyz" to file2.txt5. done

My problem is that for points:
1. select the whole line containing Q:
4. for the line in 1. print this line + the next one.
I've tried to do that with sed or awk without find a good solutions!
Thanks
ny

Perderabo · #4 (**permalink**) 07-28-2005

I still don't see how nbu_faq.txt and file2.txt would differ. It lokks like vino's solution is what you want.

vino · #5 (**permalink**) 07-29-2005

I think it is still the same.

How about this ?

sed -n -e '/^Q:.*/p' nbu_faq.txt > file1.txt
cp nbu_faq.txt file2.txt

Then look at file1.txt and file2.txt and let me know if that is what you wanted.

This is what I got

Code:

[~/temp]$ cat ny.txt
Q: What is nbu?
A: blablabla...
Q: What is blablabla...?
A: blablabla...
Q: Why ....?
A: blablabla...


[~/temp]$ sed -n -e '/^Q:.*/p' ny.txt
Q: What is nbu?
Q: What is blablabla...?
Q: Why ....?

[~/temp]$ cp ny.txt file.2
[~/temp]$ cat file.2
Q: What is nbu?
A: blablabla...
Q: What is blablabla...?
A: blablabla...
Q: Why ....?
A: blablabla...

Vino

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