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Full Discussion: Remove if the above line matches pattern
Top Forums Shell Programming and Scripting Remove if the above line matches pattern Post 302402775 by alister on Wednesday 10th of March 2010 03:36:04 PM
Old 03-10-2010
Hi, spacegoose:

Code:
$ cat data
foo: bar
foo: moo
blarg
i am on vacation
foo: goose
foo: lucy
foo: moose
foo: stucky
groover@monkey.org
foo: bozo
grimace@gonzo.net
dear sir - blargo blargo
foo: goon
foo: sloppy
foo: saudi
gimme gimme gimme
i have something for you
foo: mad
foo: happy
foo: foo

Using SED:
Code:
$ cat spacegoose.sed
#n
/^foo:/!{
    :top
    p
    /^foo:/!{
        n
        b top
    }
}

$ sed -f spacegoose.sed data
blarg
i am on vacation
foo: goose
groover@monkey.org
foo: bozo
grimace@gonzo.net
dear sir - blargo blargo
foo: goon
gimme gimme gimme
i have something for you
foo: mad

If you require a blank line after each sequence:
Code:
$ cat spacegooseLF.sed
#n
/^foo:/!{
    :top
    p
    /^foo:/!{
        n
        b top
    }
    s/.*//p
}

$ sed -f spacegooseLF.sed data
blarg
i am on vacation
foo: goose

groover@monkey.org
foo: bozo

grimace@gonzo.net
dear sir - blargo blargo
foo: goon

gimme gimme gimme
i have something for you
foo: mad

Using AWK:
Code:
awk '!/^foo:/,/^foo/'

If you require a blank line after each sequence:
Code:
awk '!/^foo:/,/^foo/{print; if(/^foo/)print ""}'

Cheers,
Alister
Last edited by alister; 03-10-2010 at 05:11 PM..
 

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LEARN ABOUT DEBIAN

uncpk

UNCPK(1)						      General Commands Manual							  UNCPK(1)

NAME

       uncpk - manage c64 cpk archives

SYNOPSIS

       uncpk [OPTION]... FILE...

DESCRIPTION

       uncpk is an archive tool for Commodore 64 .cpk-format archives.

OPTIONS

       c      Create an archive.

       x      Extract from an archive.

       l      List contents of archive.

       a      Add a file to the archive.

       v      Verbose output.

       --help Show summary of options.

       --version
	      Show version of program.

EXAMPLES

       uncpk c foo.cpk bar
	      Create archive foo.cpk with the single file bar inside it.

       uncpk a foo.cpk bar
	      Add file bar to archive foo.cpk (which must already exist).

       uncpk x foo.cpk
	      Extract all files from archive foo.cpk.

       uncpk l foo.cpk
	      List contents of archive foo.cpk.

SEE ALSO

       file65(1), ldo65(1), printcbm(1), reloc65(1), dxa(1), xa(1)

AUTHOR

       This  manual  page  was	written  by  David  Weinehall  <tao@acc.umu.se>  and  Cameron  Kaiser <ckaiser@floodgap.com>.  Original xa package
       (C)1989-1997 Andre Fachat. Additional changes (C)1989-2006 Andre Fachat, Jolse Maginnis, David Weinehall and Cameron  Kaiser.  The  current
       maintainer is Cameron Kaiser.

WEBSITE

       http://www.floodgap.com/retrotech/xa/

								   11 April 2006							  UNCPK(1)
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