rc.subr revision 1.5 
1#	$NetBSD: rc.subr,v 1.5 1998/02/28 22:56:11 lukem Exp $
2# functions used by various rc scripts
3
4#
5# checkyesno
6#	Test $1 variable, and warn if not set to YES or NO.
7#	return 0 if it's "yes" (et al), nonzero otherwise
8#
9checkyesno() {
10	eval value=\$${1}
11	case $value in
12
13		#	"yes", "true", "on", or "1"
14	[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
15		return 0
16		;;
17
18		#	"no", "false", "off", or "0"
19	[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
20		return 1
21		;;
22
23	*)
24		logger -s "WARNING: \$${1} is not set properly."
25		return 1
26		;;
27	esac
28}
29