Allocating External Files

Introduction to External Files

External files are files whose format is determined by the operating environment rather than by SAS software. External files include raw data files, JCL libraries, files that contain SAS programming statements, load libraries, and UFS files, which are part of UNIX System Services (USS). In batch and noninteractive line modes, the SAS log and procedure output files are also external files.

Note: If you are using files in the UFS file system, SAS views the z/OS file system (zFS) and the Hierarchical File System (HFS) as functionally equivalent. [cautionend]

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