ftpsync-cron - Wrapper around ftpsync for use in cron(8)
is part of the ftpsync suite for mirroring Debian and
Debian-like repositories of packages. As there are way too many mirrors of
Debian to populate them all from the machine that generates the archive
("ftp-master"), mirrors are organized in a tree-shaped hierarchy.
Thus, every mirror has exactly one upstream from which it syncs, and each
mirror can have any number of downstreams which in turn sync from it.
is a wrapper around ftpsync
itself, intended to be
run out of cron at regular, frequent intervals, such as hourly. When started,
it reads the corresponding ftpsync.conf
configuration file for the
archive in question and determines this mirror's upstream. It then fetches the
upstream's trace file via HTTP and compares it to the version on disk from the
last mirror run, thus learning whether the upstream mirror has updated. If it
Example use in a user crontab:
SHELL=/bin/bash 31 * * * * sleep $(( RANDOM %% 1800 )) &&
Debian mirror team.