#!/bin/bash case $1 in "Jan"|"January" ) cal 1 $2;; "Feb"|"February" ) cal 1 $2;; "Mar"|"March" ) cal 3 $2;; "Apr"|"April" ) cal 4 $2;; "May" ) cal 5 $2;; "Jun"|"June" ) cal 6 $2;; "Jul"|"July" ) cal 7 $2;; "Aug"|"August" ) cal 8 $2;; "Sep"|"September" ) cal 9 $2;; "Oct"|"October" ) cal 10 $2;; "Nov"|"November" ) cal 11 $2;; "Dec"|"December" ) cal 12 $2;; esac