- zipmerge [-DhIiSsV] target-zip source-zip [source-zip ...]
- Ignore directory components in file name comparisons.
- Display a short help message and exit.
- Ignore case in file name comparisons
- Ask before overwriting files. See also -s.
- Do not overwrite files that have the same size and CRC32 in both the source and target archives.
- When -i is given, do not before overwriting files that have the same size and CRC32.
- Display version information and exit.