What Are Patches?
Patching provides a means for software providers to fix their programs by updating some or all of their code. While this also includes third-party software, suppliers are likely to use their own mechanism for patching their software, so it is normally used to relate to the operating system components only. For this reason, in this chapter we'll just look at patching Solaris and the mechanism used by Sun to do this.
Patches are administered using the patchadd and patchrm commands, or the (older) installpatch and backoutpatch programs. Patchadd and patchrm are supplied with the operating system and are the recommended way to administer patches, while installpatch and backoutpatch are the original programs that were, and still ...
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