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Full Discussion: Extract specific content from a file
Top Forums Shell Programming and Scripting Extract specific content from a file Post 302359673 by radoulov on Wednesday 7th of October 2009 06:54:09 AM
Old 10-07-2009
Use gawk, nawk or /usr/xpg4/bin/awk on Solaris:

Code:
awk 'END { if (r ~ p) print r }
/^>sequence/ { if (r ~ p) print r; r = x }
{ r = (r ? r RS : x) $0 }
' p="sequence_2" infile



---------- Post updated at 12:47 PM ---------- Previous update was at 12:41 PM ----------

Yes,
thegeek's sed approach should be faster.
Assuming progressive sequence numbers with fixed format,
you could add parameters:

Code:
start="sequence_2"
stop="$(( ${start##*_} + 1 ))"

sed -n "
  /$stop/q
  /$start/,/$stop/p
  " infile



---------- Post updated at 12:51 PM ---------- Previous update was at 12:47 PM ----------

A similar approach with awk:
Code:
awk '$0 ~ stop { exit }
  $0 ~ start, $0 ~ stop {
    if ($0 !~ stop) print 
    }' start="sequence_2" \
stop="$(( ${start##*_} + 1 ))" infile



---------- Post updated at 12:54 PM ---------- Previous update was at 12:51 PM ----------

Notice that the sed and the second awk versions assume an input in numeric (by sequence number) order just like the example in the original post.
 

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LEARN ABOUT SUNOS

ncakmod

ncakmod(1)							   User Commands							ncakmod(1)

NAME

       ncakmod - start or stop the NCA kernel module

SYNOPSIS

       /etc/init.d/ncakmod start | stop

DESCRIPTION

       ncakmod is used to start or stop the Solaris Network Cache and Accelerator ("NCA") kernel module.

       When  the  start option is specified at the command-line, the NCA kernel module will be activated for all physical interfaces listed in the
       nca.if file. When the ncakmod command is invoked with the stop option, the NCA kernel module will print the following message:

       To stop NCA, please set the status configuration parameter
       to disable in ncakmod.conf and then reboot your system. See
       the ncakmod.conf(4) manual page for more information.

       Note that in order to properly stop NCA on your system, you must first edit the ncakmod.conf(4) file and set the status field to "disable,"
       then reboot your system.

OPTIONS

       start	       Starts the NCA kernel module.

       stop	       Describes the current method for stopping the NCA feature.

EXAMPLES

       Example 1: Starting and Stopping the NCA Feature

       The following command is used to start the NCA feature:

       example% /etc/init.d/ncakmod start

FILES

       /etc/init.d/ncakmod	       The NCA kernel module startup script.

       /etc/nca/ncakmod.conf	       Specifies configuration options for the NCA kernel module.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWncar			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       nca(1), ncab2clf(1), ncad_addr(4), nca.if(4), ncakmod.conf(4), ncalogd.conf(4), attributes(5)

SunOS 5.10							    28 Sep 2001 							ncakmod(1)
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