cdfextr -- extract the named entries
cdfextr [ −rps ]entry1...
Cdfextr expects a common data format file on the standard input. A new common data format file is written to the standard output containing only the variable slice fields specified on the command line if no flags are present. All static fields and parameters are passed without change. If the -s flag is used, only the named static fields are passed, and variable slices and parameters are passed without change. If the -p flag is invoked, just the specified parameters are passed, and all slices are passed unchanged. The -r flag causes all but the named fields to be passed. This option can be used in conjunction with the -p or -s flags causing named perameters or static fields to be removed.