Discovers a value within a set of Properties either halting on the first
time the property is discovered or continuing on to take the last value
found for the property key.
Expands out a set of property key macros in the following format
${foo.bar} where foo.bar is a property key, by dereferencing the value
of the key using the original source Properties and other optional
Properties.
O
OSNAME -
Static variable in class org.apache.avalon.util.env.Env