how to get the data from line number 1 to line number 100 of a file


 
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Top Forums Shell Programming and Scripting how to get the data from line number 1 to line number 100 of a file
# 1  
Old 07-25-2008
CPU & Memory how to get the data from line number 1 to line number 100 of a file

Hi Everybody,
I am trying to write a script that will get some perticuler data from a file and redirect to a file.

My Question is,
I have a Very huge file,In that file I have my required data is started from 25th line and it will ends in 100th line.
I know the line numbers, I need to get all the data started from 25th line to 100th line. How to do that with Shell script?
# 2  
Old 07-25-2008
Code:
sed -n 25,100p  file

Or may be:

Code:
sed -n 25,100p\;101q file

# 3  
Old 07-25-2008
If you have a very huge file this is an awk variation of the 2nd sed solution of radoulov:

Code:
awk 'NR>100{exit}NR>24' file

# 4  
Old 07-25-2008
cat filename.dat | head -100 | tail -75 >> newfilename.dat

or

you can do by using awk also

awk 'NR==25,NR==100' filename.dat >> newfilename.dat
# 5  
Old 07-26-2008
caught you Smilie

Code:
cat filename.dat | head -100 | tail -75 >> newfilename.dat

UUOC
# 6  
Old 11-02-2008
PHP

Well, what about reading a part of the line? I tried this:
Code:
 sed '/exp1/,/exp2/p' text.txt

But it returned whole file.

Last edited by chrisperry; 11-02-2008 at 12:33 PM..
# 7  
Old 11-03-2008
try this:
head -100 filename | tail -75
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