script that cals the cal CLI command but for dutch speakers

exercise9

#! /bin/bash

if [ "$#" == "0" ]; then
  echo You have to give at least one parameter.
  exit 1
fi

givenMonth=$1
Months=(jan feb maa apr mei jun jul aug sep okt nov dec)

for i in `seq 0 ${#Months[@]}`
do
  if [[ $givenMonth == ${Months[$i]} ]]; then
    let i++;
    if [[ $# < 2  ]]
    then
      $2=$(date "+%Y")
    fi
    cal $i $2
  fi
done

if [[ $# < 2 ]]; then
  echo You have given a faulty parameter
  exit 1;
fi