Number of links indicates the number of links to a file. Owner indicates the owner's username. Group indicates the group ownership of the file. Size is the size of the file or directory in bytes. Date indicates the day and time the file or directory was created.
Name is the name of the file or directory.
This allows you to access data without it residing on your local system. With this command, the data does not reside on your local system. Pipes such as the example given about do not work with SPSS or SAS data sets. Pipes will work, however, with SAS when generating a SAS data set from a raw data set. Refer to the help file on sas for more information.