GNU Aspell 0.60.8.2: Notes on the Prefix Option
Description: Aspell 0.60.8.2 spell checker user’s manual.

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#### 4.4.2 Notes on the Prefix Option

The `prefix` option is there to allow Aspell to easily be relocated. Changing `prefix` will change all directory names relative to the new prefix that are not explicitly set. For example if `prefix` was `/usr/local/aspell` and `dict-dir` has a default value of `/usr/local/aspell/dict` than changing `prefix` to `/opt/aspell` will also change the default value of `dict-dir` to `/opt/aspell/dict`. Note that modifying `prefix` will only affect the default compiled in values of directories. If a directory option is explicitly given a value then changing the value of `prefix` has no effect on that directory option.