Jack Nagel 0cc3eb296d cleanup: add an option to perform a 'dry run'
Sometimes you want to know what `brew cleanup` will do before it
actually removes anything. Introduce a '-n' option (chosen to match
other UNIX tools) to do this.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
2011-11-07 22:46:36 -06:00
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