Apache Reference: mod_autoindex, IndexIgnore

IndexIgnore

Files to Ignore in Index Listings
Syntax: IndexIgnore file [file ...]
Example: IndexIgnore .htaccess *.bak *~
Since: Apache 1.0

This directive adds to the list of files that should be ignored when listing a directory. Each file argument is a file extension, partial file name, wildcard expression, or full file name. Multiple IndexIgnore directives add to the list of ignored files, rather than replacing them. By default, the list contains ``.'' to ignore all UNIX ``dot-files.''