How to cut a file in this way?

mattiav27

2/20/23, 3:56 PM

I have to cut a long file (approx. 2 millions of lines) at the line that follows the line at which there is the last appearance of a word.

For example the file could be:

line 1
line 2 
....
word
line n
word
line n+2

This file should be cut at the second appearance of word, so the lines following line n+2 (and that line too) should be dropped.

The problem is that I do not know in advance the number of times word appears in the file.

0 + 0

command-line

bac0n

2/20/23, 4:31 PM

`IFS=: read a _ < <(grep -wn 'word' text.txt | tail -1) && head -n $a text.txt`

mattiav27

2/21/23, 10:51 AM

@bac0n Thanks that did the trick

Zanna

3/21/23, 10:58 AM

@bac0n you seem to have written your answer in the comments section by mistake

Score:0

Ubuntu

elmclose

2/20/23, 8:16 PM

Assuming that "word" or the marker text does not appear in any of the lines preceding the second "word" then this should do the job:

awk '{if($0!="word"){print} else {c=c+1;{print} if(c==2){exit}}}' in-file > out-file