SSH::Batch::ForNodes - Expand set arithmetic expression to host list

    # below is essential what in the "fornodes" script:
    use SSH::Batch::ForNodes;

    SSH::Batch::ForNodes::init_rc();
    my $set = SSH::Batch::ForNodes::parse_expr($expr);
    # set is a Set::Scalar instance:
    for my $host (sort $set->elements) {
        print "$host\n";
    }

Agent Zhang (agentzh) <agentzh@yahoo.cn>

This module as well as its programs are licensed under the BSD License.

Copyright (c) 2009, Yahoo! China EEEE Works, Alibaba Inc. All rights reserved.

Copyright (C) 2009, Agent Zhang (agentzh). All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
• Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
• Neither the name of the Yahoo! China EEEE Works, Alibaba Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

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