sed question[s]
Giorgos Keramidas
keramida at ceid.upatras.gr
Mon Sep 24 15:10:02 PDT 2007
On 2007-09-24 14:07, Gary Kline <kline at tao.thought.org> wrote:
> Hi,
> I could probably do at least part of this with an ed shell
> script, but sed is probaly more standard. (I may have asked this
> before, years back: FWIW. Anyhow, don't see it in my
> ~/Mail/freebsd files.)
>
> How can I automagically delete from $1,155d AND from the
> 25th line from the bottom to the last line with sed? I spent
> hours last night, by-hand saving web files; now I want to get rid
> of the cruft from them.
>
> Again, (I think) something like % sed -e 1,$155d < filefoo
> [[yes?]], but then the last part stumps me.
sed commands like 'd' take a pair of 'addresses'.
I don't know what $1,155 means, but if you mean delete the first 155
lines, then this should be easy:
sed -e '1,155d'
The second part (deleting the last 25 lines) may be slightly trickier,
as you don't know that you are going to hit end-of-file until you
actually hit it, so some sort of bufferring is required :-/
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