ZipAttributes

The file's attributes. These are traditionally somewhat complicated and platform-dependent, so using them is scarcely necessary. However, here is a representation of what this is, bit by bit:

TTTTugtrwxrwxrwx0000000000ADVSHR

TTTT = file type (rarely useful)

u = setuid, g = setgid, t = sticky

rwx = user permissions, rwx = group permissions, rwx = other permissions

0000000000 = unused

A = archive, D = directory, V = volume label, S = system file, H = hidden, R = read-only

If you want to set the Unix permissions, for instance, just bit shift by 16, e.g. 0o644 << 16. Note that attributes usually only work in conjunction with the os setting: you must use os = 3 (Unix) if you want to set Unix permissions

The comment to attach to the file. This field is defined by PKZIP's APPNOTE.txt, section 4.4.26. The comment must be at most 65,535 bytes long UTF-8 encoded. This field is not read by consumer software.

Extra metadata to add to the file. This field is defined by PKZIP's APPNOTE.txt, section 4.4.28. At most 65,535 bytes may be used in each ID. The ID must be an integer between 0 and 65,535, inclusive.

This field is incredibly rare and almost never needed except for compliance with proprietary standards and software.

When the file was last modified. Defaults to the current time.

The operating system of origin for this file. The value is defined by PKZIP's APPNOTE.txt, section 4.4.2.2. For example, 0 (the default) is MS/DOS, 3 is Unix, 19 is macOS.