FWIW, one can see the contents of those header fields as follows (only
visible on directories as it looks like):
@unzip -ZTv $some_zip@
Example output:
entral directory entry #1:
---------------------------
chrome/
offset of local header from start of archive: 0
(0000000000000000h) bytes
file system or operating system of origin: Unix
version of encoding software: 6.3
minimum file system compatibility required: Unix
minimum software version required to extract: 2.0
compression method: none (stored)
file security status: not encrypted
extended local header: no
file last modified on (DOS date/time): 2016 Nov 21 12:48:18
32-bit CRC value (hex): 00000000
compressed size: 0 bytes
uncompressed size: 0 bytes
length of filename: 7 characters
length of extra field: 0 bytes
length of file comment: 0 characters
disk number on which file begins: disk 1
apparent file type: binary
Unix file attributes (040700 octal): drwx------
MS-DOS file attributes (10 hex): dir
There is a local extra field with ID 0x5855 (old Info-ZIP Unix/OS2/NT) and
8 data bytes (GMT modification/access times only).
There is no file comment.
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