# Copyright 2005 Daniel Cer (daniel.cer@cs.colorado.edu)
#
# This work is licensed under the Creative Commons Attribution-NonCommercial-
# ShareAlike License. To view a copy of this license, visit 
# http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to 
# Creative Commons, 543 Howard Street, 5th Floor, San Francisco, California, 
# 94105, USA.

if [ $# -ne 2 ]; then
  echo -e "Usage:\n\t$0 (search term) (file with list of terms)" 2>&1
  exit -1
fi

search_term=$1; file_name=$2

# prepare egrep search expression - make sure all regex special characters 
# are escaped
search_term=`sed -e 's/\([^0-9]\)/\\\1/g'<<<$search_term`

# display line numbers for the matching entries
for match in `egrep -n ^$search_term\$ $file_name`; do
  line_num=`sed -e 's/:.*$//'<<<$match`
  echo "found on line: $line_num"
  found_match=1
done

# check to see if there were any matches 
# (/ if we printed out any line numbers in the loop above)
if [ ! $found_match ]; then echo "Search term not found." 2>&1; exit -2; fi