fizzbuzz-simple

#!/bin/bash

# Settings
fizz=3
buzz=5
input_file="$1"

# Create an empty array
numbers=()

if [ "$1" = "" ] ; then
  echo "Usage: $0 <input file>"
  exit 1
fi

while read line ; do
    # Awk is a great shortcut tool for splitting a file into columns, but quotes mess it up
    col1="$(echo "$line" | awk '{ print $1 }')"
    # BASH has built in string replacement, but it can't do this yet...
    # ... so use sed to strip out anything that isn't numeric
    number="$(echo "$col1" | sed 's/[^0-9]*//g')"
    numbers+=($number)
    # Increment the line number for the next loop
    let line_number++
done < "$input_file"

# Print out the numbers, or fizz/buzz
for number in ${numbers[@]} ; do
    finished=0
    let "${number}%${fizz}==0" && echo -n "fizz" && finished=1
    let "${number}%${buzz}==0" && echo -n "buzz" && finished=1
    if [ $finished -gt 0 ] ; then
      echo ""
    else
      echo "$number"
    fi
done