Viewing specified number of lines

sir_com · 11-16-2008, 10:52 PM

Hi All,

Here is the scenario...

I have a file say "test". File contains 40 lines. I want to view only lines between 20 to 30 (inclusive of 20th line & 30th line).

What command to use to achive the same? Please guide.

Thanks,
sir_com

centos82 · 11-16-2008, 11:22 PM

I have two kind of simple solutions for you.

1. If your file will always be 40 lines long then you can do:

cat filename|tail -20|head -10

2. If you don't know how long your file will be but you know you want lines 20 to 30 you can do

totallines=$(cat filename|wc -l)
cat filename|tail -$( echo $(( totallines - 20 )) )|head -10

sir_com · 11-17-2008, 12:27 AM

Thanks centos82. Thanks a lot buddy. I got it now.