Shell Programming and Scripting

#!/usr/bin/env bash

# @(#) s1	Demonstrate alternate codes for "grep -w", ack, glark, peg, xtcgrep
# For ack, see:
# http://beyondgrep.com/
# For glark ( ruby ), see repository, or:
# https://github.com/jpace/glark
# For peg, see:
# http://www.cpan.org/authors/id/A/AD/ADAVIES/peg-3.10
# For xtcgrep, see:
# http://cpansearch.perl.org/src/MNEYLON/File-Grep-0.01/Grep.pm

# Utility functions: print-as-echo, print-line-with-visual-space, debug.
# export PATH="/usr/local/bin:/usr/bin:/bin"
LC_ALL=C ; LANG=C ; export LC_ALL LANG
pe() { for _i;do printf "%s" "$_i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
db() { ( printf " db, ";for _i;do printf "%s" "$_i";done;printf "\n" ) >&2 ; }
db() { : ; }
C=$HOME/bin/context && [ -f $C ] && $C ack glark peg xtcgrep

FILE=${1-data1}

pl " Input data file $FILE:"
cat $FILE

for program in ack glark peg xtcgrep
do
  pl " Results for program $program:"
  $program -w abc $FILE
done

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 5.0.8 (lenny, workstation) 
bash GNU bash 3.2.39
ack (local) 2.12
glark version 1.8.0
peg (local) 3.10
xtcgrep (local) 1.5

-----
 Input data file data1:
abc
123abc456
123 abc
abc456
abc 456

-----
 Results for program ack:
abc
123 abc
abc 456

-----
 Results for program glark:
    1 abc
    3 123 abc
    5 abc 456

-----
 Results for program peg:
abc
123 abc
abc 456

-----
 Results for program xtcgrep:
abc
123 abc
abc 456