public static bool getenv_exists( byte[] name )
{
String sname= newstring( name );
return ( sname.Equals( "HOME" )
|| sname.Equals( "USERPROFILE" )
|| sname.Equals( "USER" )
|| sname.Equals( "TMPDIR" )
|| sname.Equals( "BIGLOOSTACKDEPTH" )
|| sname.Equals( "BIGLOOLIVEPROCESS" )
|| (get_property( "bigloo." + sname, null ) != null));
}