Index writes a directory listing (e.g. index.html) into every
directory of a remote so it can be browsed when served as a static
website. It is also available over the rc as operations/index.
It works like sync. It walks the remote once, renders the listings in
memory and compares them with the existing ones by size and hash from
the listing, or by reading them where the backend has no hash.
Listings in directories which contain nothing else are deleted on
backends which can't have empty directories.
Listings can be written in the serve http HTML format, the lsjson
format, Caddy's browse JSON format, or from a user template. A second
rule set (--index-include and friends) controls which directories get
listings, --dir-time controls the time shown for directories and
--no-modtime avoids reading modification times altogether.
Nick Craig-Wood
ae9a50cacd