reflac
Recompress FLAC files in-place while preserving metadata.
TLDR
Recompress a directory of FLAC files
$ reflac [path/to/directory]
Enable maximum compression (very slow)
$ reflac --best [path/to/directory]
Display filenames as they are processed
$ reflac --verbose [path/to/directory]
Recurse into subdirectories
$ reflac --recursive [path/to/directory]
Preserve file modification times
$ reflac --preserve [path/to/directory]