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exit after extracting range if lines - awk

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# 1  
Old 09-18-2012
exit after extracting range if lines - awk
Hello,

I was wondering how is it possible if I use this command:

Code:
awk 'NR >= 998 && NR <= 1000' file.txt

To exit after parsing the 1000th line ( last line targeted) ???

I observed that when executing this command for a large file, if the range of lines is at the beginning of the file it is quickly extracted, but awk will parse the entire file, and only after reaching the end of file it exits.

Same question goes for sed :
Code:
sed -n 'xx,yy p' file

# 2  
Old 09-18-2012
Code:
awk 'NR>=998;NR==1000{exit}' file
sed -n '998,1000{;p;1000q;}' file

These 2 Users Gave Thanks to elixir_sinari For This Post:
black_fender lovelinux
# 3  
Old 09-18-2012
Quote:
Originally Posted by elixir_sinari
Code:
awk 'NR>=998;NR==1000{exit}' file
sed -n '998,1000{;p;1000q;}' file

Hello, yes this is what i was looking for.

Thanks!
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