## Get 16-character b2sum fingerprint (for different files that share basename)
fingerprint="$(b2sum -l32 "$fpath" | awk '{print $1}' )";
## Form output filename
num="$(printf "$num_fmt" "$n")";
## Get 16-character b2sum fingerprint (for different files that share basename)
fingerprint="$(b2sum -l32 "$fpath" | awk '{print $1}' )";
## Form output filename
num="$(printf "$num_fmt" "$n")";