From: Admin Tensor <lists@...>
Date: 2012-08-13T02:49:44+09:00
Subject: Re: Delete a lines from a files

Robert Klemme wrote in post #1072081:
> If you really only need to delete a single line from a file sed is
> probably the easiest choice:
>
> without backup
> $ sed -i '/^john/ d' your_file
>
> with backup
> $ sed -i.bak '/^john/ d' your_file
>
> Kind regards
>
> robert

Hi,

I think because this discussion is about Ruby and the OP may or may not
have access to sed, we can follow Dave Thomas' way on the command line:

ruby -e 'BEGIN{$/=nil}; puts STDIN.readlines.to_s.gsub(/^john.*$/, "")'
< your_file

I haven't tried the code myself yet, so it has to be taken with a grain
of salt; and as written, it only outputs to stdout.

Regards,

Bill

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