Fch.7z File
These are the actual "chunks" of compressed data. Multiple small files are often grouped into a "solid" block to achieve higher compression.
While it is a standard 7-Zip archive, the "FCH" prefix often indicates it contains or plugin data for the FreeCommander software. Internal Structure of the Archive FCH.7z
If you only need the list of names (useful for scripts), use: 7z l -ba FCH.7z l (List contents of archive) command - 7-Zip manual These are the actual "chunks" of compressed data
Run the following command in a terminal to get a full listing of every file, its original size, and its compressed size: 7z l FCH.7z its original size
