#!/bin/bash

# Run this script under course design root directory

# flash-search-knowledge.sh '<knowledge-key-words>' '<lang-code>'

K=${1}
L=${2}

KK=`echo ${K} | sed 's/\`//g' | sed 's/ //g'`

grep -r -o "${KK}" student-guide/view/${L}/* | grep ':' \
  | sed "s/student-guide\/view\/${L}\///" \
  | sed 's/\/.*//' | uniq