ARC clients
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arclib      - Next generation command line interface (ARC1 arclib)
a-rex       - Clients for a-rex service and other BES based services
cream2      - Client library and command line interfaces to the gLite servers through the CREAM interface
credentials - User tools for manipulating user credentials
data        - CLI for basic data management
echo        - Client for echo service
isis        - Client for ISIS
pdp         - arcdecision -- client for accessing PDP service and get decision result
