Deleting lines till the end of a file from a particular position

[Bejoy C Alias]

Hi Guys,
My text file contains

abcv
adsa
egw
sg
##
str
dhd
dfh

I want to run a script which will delete the lines till the end of the file including the line ## . There should not be any user interaction for the script .

[Hein van den Heuvel · Accepted solution]

I assume you do not know the line value?
If you do then: awk '/^ab/,/^sg/' file
If you don't: awk '/^##/{done=1}{if (!done){print}}' file

Hein.

[Vibhor Kumar Agarwal]

sed -e '1,/##/d' file

[Vibhor Kumar Agarwal]

Ooops I did just the opp.

sed -e '/##/,//d' file

[Bejoy C Alias]

Thanks For ur quick replys ....
I got the solution....