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Solaris™ 8 Advanced System Administrator's Guide, Third Edition by Janice Winsor

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Patch Numbering

Patches are identified by unique alphanumeric strings with the patch base code first, a dash, and a number that represents the patch revision number.

Each version of Solaris can have patches for virtually every package. Each of these patches is assigned a number that is unique for each version of Solaris. Thus, the patch for the core Solaris user package, SUNWcsu, has a different number assigned to it for each version of Solaris. This numbering scheme prevents you from applying a Solaris 2.6 patch for the SUNWcsu package to a system running Solaris 7 or 8.

The sendmail package, for example, has a released patch for each version ...

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