- <b>--backup=<directory></b>
- Save the current database to the given directory before
- replacing it with the compacted database. The backup direc‐
- tory must not exist and it must reside on the same mounted
- filesystem as the current database.
+ <b>--backup=<directory></b>
+ Save the current database to the given directory before replac‐
+ ing it with the compacted database. The backup directory must
+ not exist and it must reside on the same mounted filesystem as
+ the current database.