bcron-update - Update system crontabs.
bcron-update path [ path ... ]
bcron-update polls the named files or directories periodically to see
if there are any new, changed, or removed files. When it detects
changes, it mirrors those changes into the crontab spool directory.
bcron-update runs as root in order to be able to read system files that
would potentially be unreadable otherwise.
On Debian, if path is a directory, bcron-update skips files in this
directory with names that do not solely consist of lower- and uppercase
letters ('a'-'z', 'A'-'Z'), digits ('0'-'9'), underscores ('_'), and
To mirror modern vixie-cron's behavior, use:
bcron-update /etc/crontab /etc/cron.d
The spool directory for bcron. Defaults to /var/spool/cron.
After writing files and before moving them into their final
location, bcron-update changes the ownership of the file to this
user so that bcron-sched can read them.
bcron-update outputs three different kinds of messages about actions it
The named directory has been modified, and will be scanned to
determine what files have been added or deleted.
The named file no longer exists and will be removed from the
The named file was either created or modified since the last scan,
and will be copied into the spool.
Bruce Guenter <email@example.com>