vi

[shruti_1]

hI i have a file which is approx 100 mb in size. editing its is a complicated task. Actually I wanted to know is there any method by which first 10 lines of this file can be deleted without opening the file

[Peter Godron]

Hi,
sed '1,10d' file > output

see
http://www.student.northpark.edu/pemente/sed/sed1line.txt

[Arunvijai_4]

Hi Shruti,

You can easily do with "sed"

# sed '1,10d'

-Arun

[Peter Godron]

Hi again,
can you also please read:
http://forums1.itrc.hp.com/service/forums/helptips.do?#28

and rewarad the answers to your previous questions and close the threads:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1031491
and
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1031131

[shruti_1]

what is the meaning of '1,10d' and if i need to deleted the lines from end then what do i need to give

[Chauhan Amit]

Hi Shruti,

# delete the last 10 lines of a file
sed -e :a -e '$d;N;2,10ba' -e 'P;D' # method 1
sed -n -e :a -e '1,10!{P;N;D;};N;ba' # method 2


-Amit
PS: Don't forget to assign points to the answers.

[Raj D.]

Shruti ,

sed '1,10d' means it will delete lines from 1 to 10.

and redirect the output to a different file , that will be your target file.



Also here is a sed FAQ that may help to understand further:

http://www.faqs.org/faqs/editor-faq/sed/

Cheers,
Raj.

[Raj D.]

Shruti ,

Here is your profile :

I have assigned points to 0 of 15 responses to my questions.

Try to make it 15 of 15 and make your forum profile better. Remeber to assign points to them , who are trying to help you.


hth,
Raj.


( * 0 point please. )

[Arturo Galbiati]

Hi,
this perl one-liner command will delete the first 10 lines in 'file' saving in the meanwhile the 'file' as 'file.old':

perl -i.old -ne 'print unless 1 .. 10' file

HTH,
Art

N.B. Please assign points!

[Steve Post]

It's really simple. A user called "shruti" puts in a question. But apparently they do NOT want an answer to it. If they did, they would say something like "thanks." or perhaps assign points to the response.

And any other user that looks at the responses does not know which one is good, and which one is bad. Why? Because all of the points are unassigned.

[HGN]

HI

I agre with Steve please spend their valuable time helping out and the best way to show the appreciation would be to assign points.

0 out of 18

Rgds

HGN

[HGN]

HI

I agre with Steve please spend their valuable time helping out and the best way to show the appreciation would be to assign points.

If this issue is resolved you can assign points and close this thread

0 out of 18

Rgds

HGN