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Full Discussion: using sed(?) to delete a block of text
Top Forums Shell Programming and Scripting using sed(?) to delete a block of text Post 87280 by toast on Friday 21st of October 2005 06:48:56 PM
Old 10-21-2005
using sed(?) to delete a block of text
hello people,
i am trying to accomplish what i thought should be a simple task: find a token in a file and delete a number (let's say 25) of lines following the token.

in sed, i can't figure out how to do a relative address (i.e. something like /token/25dd to delete 25 lines) and in gnu grep, if i use the -A 25 option, it only works with a positive match, but not with -v

i suppose i could accomplish same by matching the number of open and closed parentheses (), since that's how the file is formatted, but i'm also not sure how to do that Smilie

any thoughts would be most welcome!

thanks in advance

ilya

P.S. for example

if the file contains:
===========
a: (
some text(more)
blah (blah)
)

b: (
another(word)
and stuff(gf)
)

===========

i would want to remove the 4 lines from a: to )
 

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LEARN ABOUT V7

ip-token

IP-TOKEN(8)							       Linux							       IP-TOKEN(8)

NAME

       ip-token - tokenized interface identifier support

SYNOPSIS

       ip token { COMMAND | help }

       ip token set TOKEN dev DEV

       ip token del dev DEV

       ip token get [ dev DEV ]

       ip token [ list ]

DESCRIPTION

       IPv6 tokenized interface identifier support is used for assigning well-known host-part addresses to nodes whilst still obtaining a global
       network prefix from Router advertisements. The primary target for tokenized identifiers are server platforms where addresses are usually
       manually configured, rather than using DHCPv6 or SLAAC. By using tokenized identifiers, hosts can still determine their network prefix by
       use of SLAAC, but more readily be automatically renumbered should their network prefix change [1]. Tokenized IPv6 Identifiers are described
       in the draft [1]: <draft-chown-6man-tokenised-ipv6-identifiers-02>.

   ip token set - set an interface token
       set the interface token to the kernel.

       TOKEN  the interface identifier token address.

       dev DEV
	      the networking interface.

   ip token del - delete an interface token
       delete the interface token from the kernel.

       dev DEV
	      the networking interface.

   ip token get - get the interface token from the kernel
       show a tokenized interface identifier of a particular networking device.  Arguments: coincide with the arguments of ip token set but the
       TOKEN must be left out.

   ip token list - list all interface tokens
       list all tokenized interface identifiers for the networking interfaces from the kernel.

SEE ALSO

       ip(8)

AUTHOR

       Manpage by Daniel Borkmann

iproute2							    28 Mar 2013 						       IP-TOKEN(8)
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