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The optional -c or the -f options can be used to specify the family of container to be downloaded. In this case, only files stored in this family of container in the source_collection will be recursively downloaded. If the -f option is used, the input incontainer_obj is the name of a SRB file stored in a container and the program will use this info to to query the MCAT for the container and family of containers to be unloaded.
If neither the -c nor -f options were used, the program will download recursively all files stored in in the source_collection.
If the -t option is used, instead of unfolding the content of container into local files and directories, the whole container will be downloaded into a single file. It will create a local directory with the container as the name of the directory. Three types of files are put in this local directory:
1) The content of the container represented by : AAAA.dat where AAAA is the container name.
2) Index file represented by AAAA.inx. It is in ASCI text with each in-container file represented by a line with three values - SRB path, offset, size.
3) commondir file - contains a single text line representing the SRB directory (collection) that is common to these in-container files.
local_dir is the local directory under which the unloaded files will be place. If this input is not specified, it faults to ".".