topic Re: Strip bottom of text file based on pattern in Operating System - Linux

Strip bottom of text file based on pattern

Tom Weber_4 — Mon, 26 Feb 2007 14:22:16 GMT

I'm trying to think of the best way (awk, sed, perl, etc.) to cut off the bottom of a text file when it encounters a certain pattern. Let's say a 100 line text file and if it sees a certain word or phrase, return only the lines above the pattern.

So if it finds the pattern in line 67, return the first 66 lines.

Thanks!

Re: Strip bottom of text file based on pattern

Wouter Jagers — Mon, 26 Feb 2007 14:53:26 GMT

How about:

sed '/the word/,$d' < input.txt

Cheers,
Wout

Re: Strip bottom of text file based on pattern

James R. Ferguson — Mon, 26 Feb 2007 14:56:17 GMT

Hi Tom:

# perl -pe 'last if /pattern/' file

Regards!

...JRF...

Re: Strip bottom of text file based on pattern

Tom Weber_4 — Mon, 26 Feb 2007 14:58:13 GMT

That was quick! I knew someone out there would be all over it. Thank you!

Re: Strip bottom of text file based on pattern

Tom Weber_4 — Mon, 26 Feb 2007 15:03:10 GMT

Thanks Wout and James! Both solutions work just fine.

Re: Strip bottom of text file based on pattern

Tom Weber_4 — Mon, 26 Feb 2007 15:04:31 GMT

I received two replies which both are solutions to my question.