public inbox for gentoo-user@lists.gentoo.org
 help / color / mirror / Atom feed
From: Harry Putnam <reader@newsguy.com>
To: gentoo-user@lists.gentoo.org
Subject: [gentoo-user]  Re: Grep question
Date: Mon, 02 Mar 2009 20:10:16 -0600	[thread overview]
Message-ID: <87ab832w6v.fsf@newsguy.com> (raw)
In-Reply-To: loom.20090302T140336-904@post.gmane.org

James <wireless@tampabay.rr.com> writes:

> Adam Carter <Adam.Carter <at> optus.com.au> writes:
>
>
>> I need to select all 
>> the lines between string1 and string2 in a file. String1 exists on 
> an entire 
>> line by itself and string2 will be at the start of a line. What's 
> the syntax? I 
>> cant use -A as there is a variable number of lines.
>
> AWK
>
> is my vote. Old, *SIMPLE* and used by most other packages when
> pattern matching is involved. Often AWK and SED go together..... As
> do Perl and AWK

Yup and using Steves' example:

$ cat a
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
foo     <-- /foo/ true here
asdf
asdf
asdf
asdf
asdf
asdf
asdf
asdf
asdf
asdf
asdf
asdf
bar     <-- /bar/ true here
fdsa
fdsa
fdsa

cat a | awk '/^foo/{FLAG=1}\
             FLAG{print} \
             /^bar/{FLAG=""}'
foo
asdf
asdf
asdf
asdf
asdf
asdf
asdf
asdf
asdf
asdf
asdf
asdf
bar




  reply	other threads:[~2009-03-03  2:10 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-03-02  2:01 [gentoo-user] Grep question Adam Carter
2009-03-02  2:04 ` Mike Kazantsev
2009-03-02 10:01 ` Steven Lembark
2009-03-02 14:06 ` [gentoo-user] " James
2009-03-03  2:10   ` Harry Putnam [this message]
2009-03-03  9:52     ` Etaoin Shrdlu
2009-03-05 16:54       ` Harry Putnam
2009-03-05 23:01         ` Adam Carter
2009-03-06  9:33           ` Etaoin Shrdlu

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=87ab832w6v.fsf@newsguy.com \
    --to=reader@newsguy.com \
    --cc=gentoo-user@lists.gentoo.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox