Software Upgrade Protocol

The Software Upgrade Protocol (or SUP) System is a set of programs developed by Carnegie Mellon University in the 1980s[1] (as was the Andrew File System). It provides for collections of files to be maintained in identical versions across a number of machines. It was originally developed under the Mach operating system, but implementations are provided with Debian[2] & Ubuntu[3] Linux distributions.

## References

1. ↑ The SUP Software Upgrade Protocol \- Steven Shafer & Mary Thompson, Carnegie Mellon University School of Computer Science, 7 September 1989.
2. ↑ Debian Package: sup (Software Upgrade Protocol implementation)
3. ↑ Ubuntu Package: sup (Software Upgrade Protocol implementation)

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