Shell Programming and Scripting

#declaring the propertie file
 . appl.properties
#expression to count the number of lines excluding the blank lines
lines= cat appl.properties | sed '/^\s*$/d' | wc -l
echo "Number of lines is $lines"
for ((i=0;i -le 4; i++ ));
do
 echo "pradeep";


done

#key=value
firstname=Pradeep
lastname=kumar
country=India
language=English

declare -A array
declare -a keys=()
declare -a vals=()
while IFS='=' read -r key val; do
        [[ $key = '#'* ]] && continue
        array["$key"]="$val"            #bash4
        keys+=("$key"); vals+=("$val")  #bash3
done < "input"

echo "Number of entries: ${#keys[@]} or ${#array[@]}"

# two separate array [bash3]
for ((i = 0; i < ${#keys[@]}; i++)); do
        printf '[%s]=[%s]\n' "${keys[i]}" "${vals[i]}"
done

# associative array [bash4]
for key in "${!array[@]}"; do
        printf '[%s]=[%s]\n' "$key" "${array[$key]}"
done