I assume, unlike the others, that SAS isn't on the mainframe. In that case you have a few options:
Read directly using ftp access method and appropriate formats (s370 series)
If data is text, and doesn't contain binary / packed or other mainframe formaatted fields, ftp to the unix box and let ftp do the conversion from ebcdic to ascii.
There are other ways, but these are simple and straightforward.
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