REDHAT=$(shell expr "`cat /etc/issue 2> /dev/null`" : '.*Red Hat.*')
MANDRAKE=$(shell expr "`cat /etc/issue 2> /dev/null`" : '.*Mandrake.*')
DARWIN=$(shell expr "`uname -a`" : '.*Darwin.*')
REDHAT=$(shell expr "`cat /etc/issue 2> /dev/null`" : '.*Red Hat.*')
MANDRAKE=$(shell expr "`cat /etc/issue 2> /dev/null`" : '.*Mandrake.*')
DARWIN=$(shell expr "`uname -a`" : '.*Darwin.*')