bup-bloom(1) bup-bloom(1)
NAME
bup-bloom - generates, regenerates, updates bloom filters
SYNOPSIS
bup bloom [-d dir] [-o outfile] [-k hashes] [-c idxfile] [-f] [--ruin]
DESCRIPTION
bup bloom builds a bloom filter file for a bup repository. If one al-
ready exists, it checks the filter and updates or regenerates it as
needed.
OPTIONS
--ruin destroy bloom filters by setting the whole bitmask to zeros. you
really want to know what you are doing if run this and you want
to delete the resulting bloom when you are done with it.
-f, --force
don’t update the existing bloom file; generate a new one from
scratch.
-d, --dir=directory
the directory, containing .idx files, to process. Defaults to
$BUP_DIR/objects/pack
-o, --outfile=outfile
the file to write the bloom filter to. defaults to
$dir/bup.bloom
-k, --hashes=hashes
number of hash functions to use only 4 and 5 are valid. defaults
to 5 for repositories < 2 TiB, or 4 otherwise. See comments in
git.py for more on this value.
-c, --check=idxfile
checks the bloom file (counterintuitively outfile) against the
specified .idx file, first checks that the bloom filter is claim-
ing to contain the .idx, then checks that it does actually con-
tain all of the objects in the .idx. Does not write anything and
ignores the -k option.
BUP
Part of the bup(1) suite.
AUTHORS
Brandon Low ]8;;mailto:lostlogic@lostlogicx.com\lostlogic@lostlogicx.com]8;;\
Bup 0.33.7 2025-01-11 bup-bloom(1)
Generated by dwww version 1.16 on Sat Oct 3 07:35:06 CEST 2026.