bup-margin(1) General Commands Manual bup-margin(1) (NAME) bup-margin - bup (SYNOPSIS) bup margin [...] (DESCRIPTION) bup margin bup . n SHA-1 ( collision) . ( ) bup margin . . . SHA-1 (margin) . SHA-1 . SHA-1 bup margin . (OPTIONS) --predict () . (interpolation search) . --ignore-midx .midx .idx . --predict . (EXAMPLES) $ bup margin Reading indexes: 100.00% (1612581/1612581), done. 40 40 matching prefix bits 1.94 bits per doubling 120 bits (61.86 doublings) remaining 4.19338e+18 times larger is possible Everyone on earth could have 625878182 data sets like yours, all in one repository, and we would expect 1 object collision. $ bup margin --predict PackIdxList: using 1 index. Reading indexes: 100.00% (1612581/1612581), done. 915 of 1612581 (0.057%) (SEE ALSO) bup-midx(1), bup-save(1) BUP (BUP) bup(1). (AUTHORS) Avery Pennarun . Bup 0.34+ 2026-09-01 bup-margin(1)