Re: cut off last lines of a document

Thanks all again for your help!

I guess that awk below is the one to go for. I would have never been 
able to come up with those solution(s)



Am 01.09.23 um 15:59 schrieb User &:
> Le vendredi 01 sept. 2023 à 14:12:13 (+0200), Andreas Kusalananda Kähäri à écrit:
>> Using awk:
>>
>> awk -v n=3 'NR > n { print buffer[NR%n] } { buffer[NR%n] = $0 }'
>>
>> This will print all lines except the last "n" lines.  The buffer array
>> is a circular buffer that contains the most recently read "n" lines.
>> The code outputs nothing until the first "n" lines have been read, then
>> it outputs lines from the buffer array in a circular fashion while at
>> the same time filling the array with new lines from the input.
> 
> Oh, that's beautiful. Thanks for sharing.