printig 20 lines from string

Posted on 2008-11-13
Medium Priority
Last Modified: 2013-12-26
hi  I need to write an awk script that prints 20 lines from a string and directs output to a file.
pls help.
Question by:mbpssgms
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Expert Comment

ID: 22949899
Can you give an example of the input and desired output?
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Expert Comment

ID: 22952989
How does your string store 20 lines?
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Expert Comment

ID: 22956056
strings in shell scripts do not have \n or \r or anything like that in tham as far as I know.

If you have managed to get new lines into a string then you could echo it and then pipe it to head and then pipe that into a file

echo "$string" | head -n 20 > /path/file.txt

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Expert Comment

ID: 22957032
The question needs clarification.  At this point all we could do is guess at the i/o.
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Accepted Solution

ahoffmann earned 1000 total points
ID: 23650787
assuming string (as asked for in the original question) is in file named string.txt:

head -20 string.txt>file
tail -20 string.txt>file
sed -ne '1,20p' string.txt>file
awk '(NR<21){print}' string.txt>file
awk 'END{printf"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n"}' string.txt>file

Note: only the last examples ensures that you realy get 20 lines.

Author Closing Comment

ID: 31516348
thanks I'd been away.  This was similar to another solution.

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