-h - print short help
-c - configuration file from which to read cache information. The ARC_CONFIG environment variable can be
set in place of this option.
cache-list is used to list all files present in each cache or, given a list of URLs as arguments, shows
the location of each URL in the cache if present. If no arguments are given, it prints to stdout each
cache directory specified in the configuration file then a list of files in each cache directory and the
corresponding URLs of their source in the format:
urlfilename
If arguments are given, each cache is checked for the existence of each URL. If a URL is present in the
cache then the URL and filename are printed to stdout in the above format.
This tool can be useful for finding out if a certain URL is stored in the cache, or simply to give a list
of all URLs in the cache.