weekly, weekly.conf —
weekly maintenance
The /etc/weekly script is run, by default, every
  Saturday morning on a NetBSD system. The
  /etc/weekly.conf file specifies which of the standard
  weekly services are performed.
The variables described below can be set to “YES” or
    “NO” in the /etc/weekly.conf file. The
    default settings are in the
    /etc/defaults/weekly.conf file. (Note that you
    should never edit /etc/defaults/weekly.conf
    directly, as it is often replaced during system upgrades.)
  - rebuild_locatedb
- This rebuilds the locate(1)
      database, /var/db/locate.database, which must also
      exist, in order to be rebuilt.
- rebuild_mandb
- This rebuilds the
      apropos(1) database
      /var/db/man.db, using
      makemandb(8) with the
      -foption.
- rebuild_whatisdb
- This rebuilds the whatis(1)
      database(s). Note that NetBSD provides a default
      whatis.db for the system manual pages and this may not be needed. (Adjust
      your /etc/man.conf as necessary; see
      man.conf(5) for
    details.)
  - /etc/weekly
- weekly maintenance script
- /etc/weekly.conf
- weekly maintenance configuration
- /etc/weekly.local
- local site additions to /etc/weekly
The /etc/weekly script first appeared in
  4.3BSD. The /etc/weekly.conf
  configuration file appeared in NetBSD 1.3.