Shell Programming and Scripting

#!/usr/bin/env sh

# @(#) s1       Demonstrate [ac]grep, copying a group of lines.

#  ____
# /
# |   Infrastructure BEGIN

echo
set -o nounset

debug=":"
debug="echo"

## The shebang using "env" line is designed for portability. For
#  higher security, use:
#
#  #!/bin/sh -

## Use local command version for the commands in this demonstration.

set +o nounset
echo "(Versions displayed with local utility \"version\")"
version >/dev/null 2>&1 && version =o $(_eat $0 $1) grep agrep cgrep
set -o nounset

echo

FILE=${1-data1}
echo " Input file $FILE:"
cat $FILE

# |   Infrastructure END
# \
#  ---

echo
echo ' Results from grep:'
grep '29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05' $FILE

echo
echo ' Results from agrep:'
agrep '29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05' $FILE

echo
echo ' Results from agrep with -d:'
agrep -d seconds '29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05' $FILE

echo
echo ' Results from agrep with -d -k:'
agrep -d seconds -k '29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05' $FILE

echo
echo ' Results from agrep with -d <>:'
agrep -d seconds '<29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05>' $FILE

echo
echo ' Results from cgrep:'
cgrep +I2 -+w seconds '29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05' $FILE

exit 0

% ./s1

(Versions displayed with local utility "version")
Linux 2.6.11-x1
GNU bash, version 2.05b.0(1)-release (i386-pc-linux-gnu)
grep (GNU grep) 2.5.1
agrep (local) - no version provided.
cgrep (local) - no version provided.

 Input file data1:
seconds
nothing here

seconds
junk
29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05
junk

seconds
junk
still no match
more junk

 Results from grep:
29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05

 Results from agrep:
29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05

 Results from agrep with -d:
agrep: pattern too long

 Results from agrep with -d -k:
agrep: pattern too long

 Results from agrep with -d <>:
agrep: pattern too long

 Results from cgrep:
========================================
seconds
junk
29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05
junk