yearistype.sh revision 14338 
1#! /bin/sh
2
3: '@(#)yearistype.sh	7.4'
4
5case $#-$2 in
6	2-even)		case $1 in
7				*[24680])			exit 0 ;;
8				*)				exit 1 ;;
9			esac ;;
10	2-nonpres)	case $1 in
11				*[02468][048]|*[13579][26])	exit 1 ;;
12				*)				exit 0 ;;
13			esac ;;
14	2-odd)		case $1 in
15				*[13579])			exit 0 ;;
16				*)				exit 1 ;;
17			esac ;;
18	2-uspres)	case $1 in
19				*[02468][048]|*[13579][26])	exit 0 ;;
20				*)				exit 1 ;;
21			esac ;;
22	2-*)		echo "$0: wild type - $2" >&2
23			exit 1 ;;
24	*)		echo "$0: usage is $0 year type" >&2
25			exit 1 ;;
26esac
27