| Options | |||
|---|---|---|---|
| Option | Param | Description | |
| --cache | dir | Define a directory for an SZS cache. If creating a YAZ0, BZ, BZIP2, LZ or LZMA compressed file with standard compression (levels 9,9,9,6,6), the cache is searched for the compressed version. File cache-content.txt is used as file list with hash values. If the cache file is not found or the content differ, the file is (re-)created and exit status 2=differ is returned. Option --remove-dest is set automatically to protect cache integrity.
The idea behind the cache: Loading an SZS file and comparing the decompressed content is clearly faster than compressing the file. For legay reasons: If parameter DIR is a file, the filename is split into directory and base name. The directory is used for the cache directory and the base name for option --cname, but only if --cname is not used. |
|
| --log-cache | file | Define a file to log chache activities. Use '-' to log to stdout or stderr. The file is openend in append-mode. | |
| --purge | Remove repeated files with same checksum. | ||
| --fast | Scan 'cache-content.txt' and remove duplicates. Ignore option --purge. | ||