cgrep pattern filename

cgrep -w beginning-of-window-pattern +w end-of-window-pattern main-pattern filename

#!/usr/bin/env bash

# @(#) s1	Demonstrate block extraction with embedded match constraint.
# cgrep home: http://sourceforge.net/projects/cgrep/

# Section 1, setup, pre-solution.
# Infrastructure details, environment, commands for forum posts. 
# Uncomment export command to test script as external user.
# export PATH="/usr/local/bin:/usr/bin:/bin"
set +o nounset
pe() { for i;do printf "%s" "$i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
C=$HOME/bin/context && [ -f $C ] && . $C cgrep
set -o nounset
pe

FILE=${1-data1}
# cut width to look better in demo.
cut -c 1-78 data0 > $FILE

# Section 2, display input file.
# Display sample of data file, with head & tail as a last resort.
pe " || start [ first:middle:last ]"
specimen $FILE \
|| { pe "(head/tail)"; head -n 5 $FILE; pe " ||"; tail -n 5 $FILE; }
pe " || end"

# Section 3, solution.
pl " Results:"
cgrep -D -w NAME +w NAME LOCKED $FILE

exit 0

% ./s1

Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility "version")
OS, ker|rel, machine: Linux, 2.6.26-2-amd64, x86_64
Distribution        : Debian GNU/Linux 5.0.7 (lenny) 
GNU bash 3.2.39
cgrep - (local: ~/executable/cgrep May 29 2009 )

 || start [ first:middle:last ]
Edges: 5:0:5 of 28 lines in file "data1"
NAME                                                                          
------------------------------------------------------------------------------
abcdefgheija;lksdf                                                            
*** LOCKED *** 
    PARENT                            3887                                    
   ---
                                           
*** LOCKED *** 
    MIDDLE INITIAL:                                                           
    DATE:                            03-JUN-2010                      
<<<<< EOF>>>>
 || end

-----
 Results:
NAME                                                                          
------------------------------------------------------------------------------
abcdefgheija;lksdf                                                            
*** LOCKED *** 
    PARENT                            3887                                    
    TRAN NO:                                03                                
    PARENT 
    PARENT 
NAME                                                                          
NAME                                                                          
------------------------------------------------------------------------------
cvbcdeegheija;lksdf                                                           
                                           
*** LOCKED *** 
    MIDDLE INITIAL:                                                           
    DATE:                            03-JUN-2010                      
<<<<< EOF>>>>