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Logicals From Libraries: Using Storage as a Bridge Between Sessions



In converting legacy systems into SAS, or consolidating systems into an integrated whole, new techniques are often developed just to accommodate the transition. In a case where a UNIX application needed to communicate file locations from inside the Base SAS program back to the calling script file, we used the common factor – physical storage – as the common link. This allowed the parent process to retrieve values for variables that were defined in subprocesses, and normally inaccessible by the parent process. The technique uses several SAS functions, in common use in many SAS programs, to access the data from the calling process. The program then writes the library information to a UNIX script file, which can in turn be executed by the calling process to define the logicals at that level. Although this problem was solved for a UNIX platform; the technique used would lend itself to other platforms as well

Year: 2008
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