Datasets in a library

[helpmedoubts]

Write a program to see all the available datasets in a library without opening the library?

[Reeza]

proc datasets lib=libname;
run;quit;

[Tom]

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@helpmedoubts wrote:

Write a program to see all the available datasets in a library without opening the library?

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What do you mean by "open"?  It would seem to me to be impossible to know what is in a library without looking into it.