Deleting specific lines in a file - Shell Programming and Scripting

ramu_1980 · #1 (**permalink**) 02-13-2005

I have a file which has some lines starting with a particular word. I would like to delete 5 lines before each such line containing that particular word.

eg:
line1
line2
line3
line4
line5
line6
"particular word"...

I would like to delete line2-line6 and all such occurences in that file.

Thanks,
Ramu

Neo · #2 (**permalink**) 02-13-2005

Why, may I ask? Is this homework?

Neo

ramu_1980 · #3 (**permalink**) 02-13-2005

Nope.. I was talking to friend and he needed something like that at work. I was trying to find some solution on net and found this group.

I am just trying to learn more about shell scripting.

Ramu

ramu_1980 · #4 (**permalink**) 02-15-2005

Does anyone have a script or a way to do this???

bhargav · #5 (**permalink**) 02-15-2005

some thing like ...
Not tested for all inputs ...
May have to tweak depend on input you give in $1.

Code:

a=`grep -n "$1" file1 | cut -d":" -f 1`
((a=a-1))
((b=a-4))
sed ""$b","$a" d" file1

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