CODEWITHSUNDEEP
bashvim
user3230419
user3230419

Reputation: 11

Script to delete specific lines from a file

Is there any way I can delete specific lines from the file?. e.g. I have 8 files that are names as Crest_001.dat, Crest_002.dat, ..., Crest_008.dat. Now I want to delete lines starting from 10 to 30000 from all these files. Right now, I am opening each file manually in vim and using following command: ":10,30000d"

This takes lot of time as my files are huge! Is there any way I can use a script to do this?

Upvotes: 1

Views: 93

Answers (2)

krishna murti
krishna murti

Reputation: 1061

!/bin/bash

for i in $(find . -name 'Crest*.dat' -print 2>/dev/null) do sed -i '10,30000d' "$i" done

Upvotes: 0

ray
ray

Reputation: 4267

if your sed supports -i, you can use sed

sed -i.bak '10,30000d' Crest_00{1..8}.dat

original files will be backed up with extension .bak

otherwise you need to use loop to run sed on each file and redirect the output to another filename.

Upvotes: 2

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