The documentation lists the "--keep" option, but the actual command
doesn't implement it:
$ bup prune-older --unsafe --keep 7d,1y,10y,100y
usage: bup prune-older [options...] [BRANCH...]
[...]
error: option --keep not a unique prefix
Signed-off-by: Alexander Barton <alex@barton.de>
[rlb@defaultvalue.org: shorten summary line]
Reviewed-by: Rob Browning <rlb@defaultvalue.org>
Tested-by: Rob Browning <rlb@defaultvalue.org>
: when no smaller time scale --keep option applies, retain the
oldest save for any year within the given period.
---keep ALL,DAILY,MONTHLY,YEARLY
-: shorthand equivalent to specifying each of the related `--keep-*`
- options for each period. If an underscore is specified for a
- period, then that time-scale will be unaffected by this argument.
-
--wrt UTC_SECONDS
: when computing a keep period, place the most recent end of the
range at UTC\_SECONDS, and any saves newer than this will be kept.