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Sams Teach Yourself Ruby in 21 Days by Mark Slagell

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An Interactive Process Killer

Finally, we get to the serious work.

A variant of the next script is currently in use in a business setting. Here's the scenario: A central database server is consulted all day long by client machines throughout a workplace. The clients are running various versions of Windows, and the server is an old, underpowered, and overworked Unix machine. The client application running on the Windows workstations is interactive; it's possible for a user to walk away from a session without remembering to log out, and the server can handle only so many users at a time. So it's occasionally necessary for the system administrator to kick some users off the system.

But who gets kicked off is not an automatic choice dictated by inflexible ...

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