Johannes Schindelin <Johannes.Schindelin@xxxxxx> writes: > Just in case that certain reviewers favor length over readability, let me > offer this snippet: > > size=$(perl -e "print -s \".git/index\"") && > dd if=/dev/zero of=.git/index bs=1 seek=$(($size-20) count=20 Yup, this does sound like a good direction to go (I think you have some unbalanced parens but it is sufficient to convey the idea). > Since whatever hash will be used in the future is most likely larger than > 20 bytes, this should still work fine (and even if somebody sane replaces > the SHA-1 of the index with a CRC-32 for the same benefit we have now, the > test will fail quickly and it is easy to replace the 20 by 4). True that, too.