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Delete specific Range of lines Using sed , awk, grep etc.

hi,
My issue is that I want to delete a range of lines from a txt file Using shell scripting.For example in a file containing 100 lines, I want to delete only specific lines in the range of 11 to 29 .I can use any command for this purpose in shell script. Somebody please suggest a solution

line no. 10 contains
10 <Help
11 Name ="Maintenance Department"
12 Help="">
13 >Text
14 ...............
15 <F1
16 ...........
17 .........
18
19 <text
20 .........
21 ...........
22 <F1>
23 ...........
24 .........
25 <text
26 .........
27 ...........
28 </Help>
29 <Help
30 Name ="Clearing Department"
31 Help="">
32 >Text
33 ...............
34 <F1
35 ...........
36 .........

Is there anyone who can help me out

If you mentioned WHICH lines in that range you'd like
to remove, maybe?

Cheers,
Tink

Sounds like homework to me Tink ...

The command to be used was
sed '2,10d' a.org > b.txt
this would delete line ranging from 2 to 10 including them.
It looks so easy. but it came after a lot of research

Quote:

Originally Posted by joyds219 (Post 3103047)

The command to be used was
sed '2,10d' a.org > b.txt
this would delete line ranging from 2 to 10 including them.
It looks so easy. but it came after a lot of research

Congratulations!! Homework or not, you are on the path to total success. Look also at addressing by content---not just line number.
eg:
sed '/text/,/F1/d oldfile > newfile